Engine Assembly-Cylinder Head & Related Parts fit your 2003 GMC Sierra 2500 HD 4WD

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2003 GMC Sierra 2500 HD 4WD
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Brakes, Rear Axle, Propeller Shaft, Wheels, Tires
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Cooling System, Grille, Oil System
Frames, Springs, Shocks, Bumpers
Front Axle, Front Suspension, Steering
Front End Sheet Metal, Heater
Fuel System, Exhaust, Emission System
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Transmission - Automatic
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Categories Close X

Currently selected

Other Categories

Body Mounting, Air Conditioning, Audio/Entertainment
Brakes
Brakes, Rear Axle, Propeller Shaft, Wheels, Tires
Cab And Body Structure, Mirrors, Doors, Trim, Seat Belts, Wipers
Cooling System, Grille, Oil System
Frames, Springs, Shocks, Bumpers
Front Axle, Front Suspension, Steering
Front End Sheet Metal, Heater
Fuel System, Exhaust, Emission System
Maintenance Parts, Fluids, Capacities, Electrical Connectors
Rear Body Structure, Moldings & Trim, Cargo Stowage
Starter, Generator, Ignition, Electrical, Lamps
Transfer Case
Transmission - Automatic
Transmission - Manual
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Recommended
Part No. & Part Description
Price & Qty.
Part No. &
Part Description
  • BOLT, Hex
    11570082
    BOLT, HEX FLANGED HEAD,M8X1.25X22,19 THREAD,18 OUTSIDE DIAMETER,10.9,GMW3359(VALVE LIFTER GUIDE RETAINER)
    • Require Quantity: 04
    • Package Quantity: 10
    $8.00 $5.08
    10
    Add To Cart
  • 11515755
    BOLT, HEXAGON,M8X1.25X16,15 THREAD,18 O.D.,10.9,7114M(EXHAUST MANIFOLD HEAT SHIELD)(TOGETHER WITH 12345493 REPLCS 25534835)
    • Require Quantity: 04
    • Package Quantity: 1
    $13.05
    1
    Add To Cart
  • 11515756
    BOLT, HEX FLANGED HEAD, M8X1.25X20,17THD,18 O.D.,10.9,7114M(SECONDARY AIR INJECTION PIPE)
    • Require Quantity: 02
    • Package Quantity: 10
    $7.50 $4.53
    10
    Add To Cart
  • 11515763
    BOLT, HEX FLANGED HEAD,M10X1.5X16,21.5 O.D.,MACHINE POINT,9.8,7114(EGR VALVE PIPE CLIP)
    $7.39 $4.69
    1
    Add To Cart
  • GMC 11519122
    11519122
    BOLT, HEX FLANGED HEAD,M10X1.5X35,20.15 OUTSIDE DIAMETER,30.5 THREAD,10.9,7114M,INTAKE 6 LOBED SOCKET-T50(ENGINE LIFT REAR BRACKET)
    $4.80 $3.04
    1
    Add To Cart
  • LIFTER, Engine Valve Lifter
    12648846
    LIFTER, VALVE(NON-ACTIVE LIFTERS)
    • Fitting Vehicle Options: CK1,2(LM7)
    • Require Quantity: 16
    • Package Quantity: 1
    • Replaced By: 12698945
    $49.82 $30.10
    1
    Add To Cart
  • 17122490
    LIFTER, VALVE(HYDRAULIC, ROLLER, NON-ACTIVE FUEL MANAGEMENT LIFTER)(COMPLETE ASSEMBLY)
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    • Require Quantity: 16
    • Package Quantity: 1
    $60.54 $36.58
    1
    Add To Cart
  • GMC 97325546
    97325546
    LIFTER, VALVE(LIFTER CAN BLACK ENAMEL USED WITH EITHER PUSH RODS, 97367163 OR 97240416)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 16
    • Package Quantity: 1
    $70.30 $40.39
    1
    Add To Cart
  • GMC 17120060
    17120060
    LIFTER, VALVE
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 16
    • Package Quantity: 1
    • Replaced By: 12722012
    $62.12 $37.53
    1
    Add To Cart
  • GMC 12721203
    12721203
    LIFTER, VALVE(HYDRAULIC, ROLLER, NON-ACTIVE FUEL MANAGEMENT LIFTER)(MERCH PACKING OF QTY 4)
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    $181.49 $114.83
    1
    Add To Cart
  • SPARK PLUG, Spark Ignition
    19299585
    SPARK PLUG, GASOLINE ENGINE IGNITION(PLATINUM PLUG)
    • Fitting Vehicle Options: CK1,2,3(LM7), CK1,2,3(LQ4)
    • Require Quantity: 08
    • Package Quantity: 1
    $13.20 $7.36
    1
    Add To Cart
  • 12679800
    SPARK PLUG, GASOLINE ENGINE IGNITION(PLATINUM PLUG)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 08
    • Package Quantity: 1
    $12.98 $7.24
    1
    Add To Cart
  • GASKET, Engine Camshaft & Valve Rocker Cover
    12637683
    GASKET, VALVE ROCKER ARM COVER(PART OF 9,36)(*KIT1)
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    • Require Quantity: 02
    • Package Quantity: 1
    $34.05 $21.63
    1
    Add To Cart
  • GMC 12557831
    12557831
    GASKET, VALVE ROCKER ARM COVER BOLT(GRAY)(0.413)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 14
    • Package Quantity: 1
    $13.24 $8.00
    1
    Add To Cart
  • 97188896
    GASKET, VALVE ROCKER ARM COVER(LOWER COVER TO HEAD)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 02
    • Package Quantity: 1
    $83.05 $50.18
    1
    Add To Cart
  • 12559597
    GASKET, VALVE ROCKER ARM COVER(PART OF 520)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 02
    • Package Quantity: 1
    $36.54 $23.21
    1
    Add To Cart
  • BOLT, Engine Cylinder Head
    12558840
    BOLT, CYL HEAD(SHORT)(M8X1.25X45)
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    • Require Quantity: 10
    • Package Quantity: 1
    $5.95 $3.59
    1
    Add To Cart
  • 11588291
    BOLT, CYL HEAD(M11X2.0X155)
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    • Require Quantity: 16
    • Package Quantity: 1
    $10.53 $6.35
    1
    Add To Cart
  • 12560745
    BOLT, CYL HEAD(M11X2.0X100.0-6G THREAD)(W/ADHESIVE PATCH)
    • Fitting Vehicle Options: CK1,2(LM7)
    • Require Quantity: 04
    • Package Quantity: 5
    $6.28 $3.78
    5
    Add To Cart
  • 12560745
    BOLT, CYL HEAD(SHORT)(M11X2.0X100.0-6G THREAD)(W/ADHESIVE PATCH)
    • Fitting Vehicle Options: CK1,2,3(LQ4)
    • Require Quantity: 04
    • Package Quantity: 5
    $6.28 $3.78
    5
    Add To Cart
  • 11610681
    BOLT, CYL HEAD(M12 X 121MM FLANGE)(UPPER)(WHEN REPLACING ONE BOLT; ALL MUST BLACK ENAMEL REPLACED)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 36
    • Package Quantity: 1
    $10.21 $6.49
    1
    Add To Cart
  • 97355741
    BOLT, CYL HEAD(LOWER)(M8 X 90MM HEXAGON SOCKET)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 08
    • Package Quantity: 1
    $13.05
    1
    Add To Cart
  • 11519111
    BOLT, CYL HEAD(M10X1.5X103)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 24
    • Package Quantity: 1
    $8.69 $5.25
    1
    Add To Cart
  • GMC 11519112
    11519112
    BOLT, CYL HEAD(M10X1.5X86)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 04
    • Package Quantity: 1
    $7.50 $4.53
    1
    Add To Cart
  • 11519113
    BOLT, CYL HEAD(M10X1.5X52)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 08
    • Package Quantity: 1
    $7.72 $4.66
    1
    Add To Cart
  • SEAL KIT, Engine Valve
    12482063
    SEAL KIT, INTAKE VALVE STEM OIL(W/SPRING SHIM)(14.4MM)(CONTAINS 8 SEALS)
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    $60.23 $36.39
    1
    Add To Cart
  • 12482062
    SEAL KIT, EXHAUST VALVE STEM OIL(22.8MM)(CONTAINS 8 SEALS)
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    $66.04 $37.95
    1
    Add To Cart
  • GUIDE, Engine Valve Push Rod Cover
    12595365
    GUIDE, VALVE LIFTER(ACCOMMODATES 4 VALVE LFTRS EACH,WITH SIDE GROOVES)
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    • Require Quantity: 04
    • Package Quantity: 1
    $17.43 $10.54
    1
    Add To Cart
  • 12551397
    GUIDE, VALVE LIFTER(ACCOMMODATES 2 VALVE LFTRS EACH)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 08
    • Package Quantity: 10
    $5.16 $3.27
    10
    Add To Cart
  • 12562369
    GUIDE, VALVE LIFTER PUSH ROD
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 08
    • Package Quantity: 1
    $12.60
    1
    Add To Cart
  • GMC 97240845
    97240845
    GUIDE, VALVE LIFTER
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 08
    • Package Quantity: 1
    $21.86 $13.21
    1
    Add To Cart
  • ARM, Engine Valve Rocker
    12681275
    ARM, VALVE ROCKER
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    • Require Quantity: 16
    • Package Quantity: 1
    $22.71 $13.72
    1
    Add To Cart
  • GMC 97365293
    97365293
    ARM, VALVE ROCKER(INTAKE)(INCLUDES 4,7)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 08
    • Package Quantity: 1
    $162.59 $80.63
    1
    Add To Cart
  • GMC 12556298
    12556298
    ARM, VALVE ROCKER
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 16
    • Package Quantity: 1
    $41.96 $25.34
    1
    Add To Cart
  • GMC 97328661
    97328661
    ARM, VALVE ROCKER(EXHAUST)(INCLUDES 4,7)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 08
    • Package Quantity: 1
    $176.72 $111.81
    1
    Add To Cart
  • WIRE KIT, Spark or Glow Plug Ignition
    19351572
    WIRE KIT, SPARK PLUG(7MM DIAMETER, 10.5IN LG)(CONTAINS 8 WIRES)(USED W/COILS STAMPED 12558693-MELCO COIL)
    • Fitting Vehicle Options: CK1,2(LM7)
    • Replaced By: 19417607
    $171.34 $76.76
    1
    Add To Cart
  • 19351572
    WIRE KIT, SPARK PLUG(USED W/COILS STAMPED 12558693-MELCO COIL, 7MM DIAMETER, 10.5IN LG)(CONTAINS 8 WIRES)
    • Fitting Vehicle Options: CK1,2,3(LQ4)
    • Replaced By: 19417607
    $171.34 $76.76
    1
    Add To Cart
  • GMC 19417606
    19417606
    WIRE KIT, SPARK PLUG(COILS STAMPED 19005218-DELPHI COIL, 7MM DIAMETER, 9.2IN LG)(CONTAINS 8 WIRES)
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    $159.62 $71.51
    1
    Add To Cart
  • COVER, Engine Valve Rocker & Camshaft
    12570427
    COVER, VALVE ROCKER ARM(INCLUDES 4,5,10)(INCLUDES:COVER,GASKET,BOLT,DEFLECTOR,FITTING)(REMOVE PCV VALVE AND CONNECT HOSE TO VALVE COVER PORTION WHEN USING TO REPLACE PART NUMBER-12561820)
    • Location: Driver Side
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    $202.36 $128.03
    1
    Add To Cart
  • 12582224
    COVER, VALVE ROCKER ARM(INCLUDES 4,10)(INCLUDES:COVER,GASKET,BOLT,CONNECTOR,FITTING,BAFFLE,CAP)(WHEN REPLACING COVER, TRIM EXISTING PCV HOSE TO FIT OR USE PCV HOSE 12582227)(IF REPLACING 2-PORTION VALVE COVER, PLUG LOOSE PCV HOSE.)
    • Location: Passenger Side
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    $160.89 $102.23
    1
    Add To Cart
  • 12570555
    COVER, VALVE ROCKER ARM(INCLUDES 517)(INCLUDES COVER,GASKET)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 02
    • Package Quantity: 1
    $171.97 $82.34
    1
    Add To Cart
  • GMC 97223559
    97223559
    COVER, VALVE ROCKER ARM(UPPER)(INCLUDES 12,52,53)(USE SILICONE SEALANT P/N 12378521)(INCLUDES PCV DIAPHRAGM VALVE)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 02
    • Package Quantity: 1
    $1629.48 $1209.08
    1
    Add To Cart
  • GMC 97223425
    97223425
    COVER, VALVE ROCKER ARM(LOWER)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 02
    • Package Quantity: 1
  • BOLT, Engine Camshaft & Valve Rocker Cover
    12577215
    BOLT, VALVE ROCKER ARM COVER(PART OF 9,36)(M6.0X1.0)(W/GROMMET,SLEEVE)
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    • Require Quantity: 08
    • Package Quantity: 1
    $7.48 $4.75
    1
    Add To Cart
  • GMC 12559598
    12559598
    BOLT, VALVE ROCKER ARM COVER(M6X1.0XX26)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 14
    • Package Quantity: 1
    $13.59 $8.64
    1
    Add To Cart
  • 94199279
    BOLT, VALVE ROCKER ARM SHAFT OIL DEFLECTOR(8.143)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 12
    • Package Quantity: 1
    $0.16 $0.10
    1
    Add To Cart
  • 97372245
    BOLT, VALVE ROCKER ARM COVER(LOWER COVER TO HEAD)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 24
    • Package Quantity: 1
    $13.05
    1
    Add To Cart
  • 97312621
    BOLT, VALVE ROCKER ARM COVER(TO UPPER COVER)(M6-1X20 W/ROUND TIP)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 22
    • Package Quantity: 1
    $2.61 $1.66
    1
    Add To Cart
  • ROD, Engine Valve Push Rod
    10238852
    ROD, VALVE PUSH
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    • Require Quantity: 16
    • Package Quantity: 1
    $30.29 $18.31
    1
    Add To Cart
  • 12556295
    ROD, VALVE PUSH(INTAKE)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 08
    • Package Quantity: 1
    $24.63 $14.87
    1
    Add To Cart
  • GMC 12556296
    12556296
    ROD, VALVE PUSH(EXHAUST)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 08
    • Package Quantity: 1
    $23.00 $13.89
    1
    Add To Cart
  • 97240416
    ROD, VALVE PUSH(NOTE PUSH ROD HAS HOLES IN ENDS.ROD CAN BLACK ENAMEL USED TO REPLACE PUSH ROD WITHOUT HOLES IN ENDS/ P/N 97367163.")
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 16
    • Package Quantity: 1
    $16.33 $13.06
    1
    Add To Cart
  • GASKET, Engine Cylinder Head
    12589227
    GASKET, CYL HEAD(NEW HEAD BLTS REQ'D WHEN HEAD IS REMOVED)(*KIT1)
    • Fitting Vehicle Options: CK1,2,3(LQ4)
    • Require Quantity: 02
    • Package Quantity: 1
    $90.49 $57.51
    1
    Add To Cart
  • 12637785
    GASKET, CYL HEAD(FOR GRADE SELECTOR, SEE SI2000 DOCUMENTATION INSIDE DIAMETER #671425)(1.05+/- 0.050 MM)(GRADE C)(NEW HEAD BOLTS REQUIRED WHEN HEAD IS REMOVED)
    • Location: Driver Side
    • Fitting Vehicle Options: CK2,3(LB7)
    $112.69 $68.07
    1
    Add To Cart
  • 12637788
    GASKET, CYL HEAD(FOR GRADE SELECTOR, SEE SI2000 DOCUMENTATION INSIDE DIAMETER #671425)(GRADE C)(NEW HEAD BOLTS REQUIRED WHEN HEAD IS REMOVED)
    • Location: Passenger Side
    • Fitting Vehicle Options: CK2,3(LB7)
    $112.68 $75.52
    1
    Add To Cart
  • 12575329
    GASKET, CYL HEAD(*KIT1)
    • Fitting Vehicle Options: CK1,2(LM7)
    • Require Quantity: 02
    • Package Quantity: 1
    $69.23 $44.01
    1
    Add To Cart
  • 12637790
    GASKET, CYL HEAD(FOR GRADE SELECTOR, SEE SI2000 DOCUMENTATION INSIDE DIAMETER #671425)(GRADE A)(NEW HEAD BOLTS REQUIRED WHEN HEAD IS REMOVED)
    • Location: Passenger Side
    • Fitting Vehicle Options: CK2,3(LB7)
    $65.43 $41.59
    1
    Add To Cart
  • GMC 12558163
    12558163
    GASKET, CYL HEAD
    • Location: Driver Side
    • Fitting Vehicle Options: CK2,3(L18)
    $57.14 $36.32
    1
    Add To Cart
  • GMC 12558164
    12558164
    GASKET, CYL HEAD
    • Location: Passenger Side
    • Fitting Vehicle Options: CK2,3(L18)
    $67.00 $40.48
    1
    Add To Cart
  • GMC 12637786
    12637786
    GASKET, CYL HEAD(FOR GRADE SELECTOR, SEE SI2000 DOCUMENTATION INSIDE DIAMETER #671425)(GRADE B)(NEW HEAD BOLTS REQUIRED WHEN HEAD IS REMOVED)
    • Location: Driver Side
    • Fitting Vehicle Options: CK2,3(LB7)
    $65.13 $39.35
    1
    Add To Cart
  • 12637787
    GASKET, CYL HEAD(GRADE A)(NEW HEAD BOLTS REQUIRED WHEN HEAD IS REMOVED)
    • Location: Driver Side
    • Fitting Vehicle Options: CK2,3(LB7)
    $76.05 $47.67
    1
    Add To Cart
  • 12637789
    GASKET, CYL HEAD(FOR GRADE SELECTOR, SEE SI2000 DOCUMENTATION INSIDE DIAMETER #671425)(GRADE B)(NEW HEAD BOLTS REQUIRED WHEN HEAD IS REMOVED)
    • Location: Passenger Side
    • Fitting Vehicle Options: CK2,3(LB7)
    $85.38 $40.88
    1
    Add To Cart
  • GMC 98040128
    98040128
    GASKET, CYL HEAD(OVERBORED)(DO NOT USE SERVICE MANUAL TORQUES/NEW TORQUE SPECIAL WILL BLACK ENAMEL INCLUDED)(.75MM OVERSIZED)
    • Location: Passenger Side
    • Fitting Vehicle Options: CK2,3(LB7)
    $165.46 $66.55
    1
    Add To Cart
  • GMC 98040130
    98040130
    GASKET, CYL HEAD(OVERBORED)(DO NOT USE SERVICE MANUAL TORQUES/NEW TORQUE SPECIAL WILL BLACK ENAMEL INCLUDED)(.75MM OVERSIZED)
    • Location: Driver Side
    • Fitting Vehicle Options: CK2,3(LB7)
    $161.20 $77.18
    1
    Add To Cart
  • KEY, Valve Stem
    10166345
    KEY, VALVE STEM
    • Fitting Vehicle Options: CK1,2(LM7)
    • Require Quantity: 32
    • Package Quantity: 10
    $5.17 $3.28
    10
    Add To Cart
  • 94239501
    KEY, VALVE STEM
    • Fitting Vehicle Options: CK2,3(LB7,M74,NF2)
    • Require Quantity: 64
    • Package Quantity: 1
    $2.68 $1.71
    1
    Add To Cart
  • KEY, Engine Valve Spring Cap
    10166345
    KEY, VALVE STEM
    • Fitting Vehicle Options: CK1,2,3(LQ4)
    • Require Quantity: 32
    • Package Quantity: 10
    $5.17 $3.28
    10
    Add To Cart
  • GMC 3947880
    3947880
    KEY, VALVE STEM
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 32
    • Package Quantity: 25
    $2.11 $1.76
    25
    Add To Cart
  • SPRING, Engine Valve
    12706568
    SPRING, VALVE
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    • Require Quantity: 16
    • Package Quantity: 1
    $7.39 $4.63
    1
    Add To Cart
  • 12565763
    SPRING, VALVE
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 16
    • Package Quantity: 1
    $8.49 $5.40
    1
    Add To Cart
  • GMC 98025825
    98025825
    SPRING, VALVE(NOTE:"WHEN USED IN PLACE OF 97225124,REPLACE ALL INTAKE AND EXHAUST SPRINGS AND CAPS(97329106)ON AFFECTED BANK)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 32
    • Package Quantity: 1
    $28.51 $17.24
    1
    Add To Cart
  • PLUG, Engine Cylinder Head
    11610259
    PLUG, CYL HEAD CORE HOLE(M12X1.5X21.2)(HEXAGON,SOCKET)
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    $11.14 $6.72
    1
    Add To Cart
  • GMC 11562126
    11562126
    PLUG, CYL HEAD CORE HOLE(PRESSURE IN CUP)(PART OF 14)(CUP,32.03X7.88X1.27, S30400 STAINLESS STEEL PER SAE J405.)
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    • Require Quantity: 02
    • Package Quantity: 10
    $4.17 $2.65
    10
    Add To Cart
  • GMC 94032652
    94032652
    PLUG, CYL HEAD CORE HOLE(PART OF 25)(28MM O.D.)(0.034)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 02
    • Package Quantity: 1
    $2.31 $1.38
    1
    Add To Cart
  • VALVE, Exhaust
    12563064
    VALVE, EXHAUST(STD)
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)(EXC KL5)
    • Require Quantity: 08
    • Package Quantity: 1
    • Replaced By: 12694167
    $37.36 $22.58
    1
    Add To Cart
  • GMC 12558849
    12558849
    VALVE, EXHAUST(STD)(OS)
    • Fitting Vehicle Options: CK2,3(L18)(EXC NM2)
    • Require Quantity: 08
    • Package Quantity: 1
    • Replaced By: 19433168
    $99.21 $63.05
    1
    Add To Cart
  • GMC 12558295
    12558295
    VALVE, EXHAUST(STD)
    • Fitting Vehicle Options: CK1,2,3(LQ4,KL5)
    • Require Quantity: 08
    • Package Quantity: 1
    $63.52 $40.37
    1
    Add To Cart
  • GMC 12559084
    12559084
    VALVE, EXHAUST(0.003 OVERSIZE)
    • Fitting Vehicle Options: CK2,3(L18)(EXC NM2)
    • Require Quantity: 08
    • Package Quantity: 1
    $84.42 $38.99
    1
    Add To Cart
  • GMC 12559086
    12559086
    VALVE, EXHAUST(0.030" OS)
    • Fitting Vehicle Options: CK2,3(L18)(EXC NM2)
    • Require Quantity: 08
    • Package Quantity: 1
    $83.25 $38.22
    1
    Add To Cart
  • GMC 19206511
    19206511
    VALVE, EXHAUST(0.015 OVERSIZE)
    • Fitting Vehicle Options: CK2,3(L18)(EXC NM2)
    • Require Quantity: 08
    • Package Quantity: 1
    $128.81 $81.86
    1
    Add To Cart
  • 97366946
    VALVE, EXHAUST
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 16
    • Package Quantity: 1
    $74.52 $36.97
    1
    Add To Cart
  • GMC 12562954
    12562954
    VALVE, EXHAUST(0.015" OVERSIZE)
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)(EXC KL5)
    • Require Quantity: 08
    • Package Quantity: 1
  • 19418993
    COIL, Ignition Coil, COIL,IGNITION(STAMPED 12556393)(CONSISTS OF A COIL ONLY)
    • Require Quantity: 08
    • Package Quantity: 1
    $124.80 $59.40
    1
    Add To Cart
  • 24100002
    SEAL, Engine Crankcase, SEAL,OIL FILLER TUBE(O RING)(27.94MM INNER DIAMETER)(SIZE #320)
    • Require Quantity: 02
    • Package Quantity: 5
    $5.47 $2.72
    5
    Add To Cart
  • 24100002
    SEAL, Engine Oil Filler, SEAL,OIL FILLER CAP(O RING)(PART OF 40)(27.94MM INNER DIAMETER)(SIZE #320)(1.745)
    • Require Quantity: 02
    • Package Quantity: 5
    $5.47 $2.72
    5
    Add To Cart
  • SEAL, Fuel Injector
    94051259
    SEAL, FUEL INJECTOR NOZZLE HOUSING(O RING)(PART OF 25)(1.531)
    • Require Quantity: 16
    • Package Quantity: 10
    $3.84 $2.14
    10
    Add To Cart
  • 97225457
    SEAL, FUEL INJECTOR(PART OF 11)
    • Require Quantity: 08
    • Package Quantity: 1
    $29.58 $17.86
    1
    Add To Cart
  • VALVE, Intake
    GMC 12564494
    12564494
    VALVE, INTAKE(STD)
    • Fitting Vehicle Options: CK1,2(LM7)
    • Require Quantity: 08
    • Package Quantity: 1
    $34.46 $20.82
    1
    Add To Cart
  • 12563063
    VALVE, INTAKE(STD)
    • Fitting Vehicle Options: CK2,3(LQ4,M32), CK2,3(LQ4,MW3), CK1,2,3(LQ4,MT1)(EXC KL5)
    • Require Quantity: 08
    • Package Quantity: 1
    $39.32 $23.75
    1
    Add To Cart
  • GMC 12556317
    12556317
    VALVE, INTAKE(STD)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 08
    • Package Quantity: 1
    $55.59 $35.32
    1
    Add To Cart
  • GMC 12562952
    12562952
    VALVE, INTAKE(0.015" OVERSIZE)
    • Fitting Vehicle Options: CK2,3(LQ4,MW3), CK1,2,3(43)(LQ4,MT1)(EXC KL5)
    • Require Quantity: 08
    • Package Quantity: 1
    $175.48 $37.97
    1
    Add To Cart
  • 12564338
    VALVE, INTAKE(STD)
    • Fitting Vehicle Options: CK1,2,3(LQ4,MT1,KL5)
    • Require Quantity: 08
    • Package Quantity: 1
    $34.49 $27.58
    1
    Add To Cart
  • GMC 12638805
    12638805
    VALVE, INTAKE
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 16
    • Package Quantity: 1
    $44.41 $26.84
    1
    Add To Cart
  • GMC 19206512
    19206512
    VALVE, INTAKE(0.015" OVERSIZE)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 08
    • Package Quantity: 1
    $33.73 $20.38
    1
    Add To Cart
  • PIN, Engine Cylinder Head
    12570326
    PIN, CYL HEAD LOCATING
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    • Require Quantity: 04
    • Package Quantity: 1
    $7.39 $4.46
    1
    Add To Cart
  • 12558081
    PIN, CYL HEAD LOCATING(1/2 X 5/8 O.D.)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 04
    • Package Quantity: 5
    $4.34 $2.61
    5
    Add To Cart
  • BOLT, Engine Valve Rocker Arm Shaft
    12560961
    BOLT, VALVE ROCKER ARM PIVOT SUPPORT(M8X1.25X52.5)
    • Fitting Vehicle Options: CK1,2(LM7), CK1,2,3(LQ4)
    • Require Quantity: 16
    • Package Quantity: 1
    $9.27 $5.89
    1
    Add To Cart
  • GMC 94011951
    94011951
    BOLT, VALVE ROCKER ARM(BRACKET)
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 05
    • Package Quantity: 1
    $30.19 $18.24
    1
    Add To Cart
  • HEAD, Engine Cylinder
    GMC 12562319
    12562319
    HEAD, CYL(PARTIAL)(INCLUDES 20,22)(INCLUDES HEAD,GUIDES,SEATS,PLUG)
    • Fitting Vehicle Options: CK1,2,3(LQ4)(EXC KL5)
    • Require Quantity: 02
    • Package Quantity: 1
    $751.05 $473.06
    1
    Add To Cart
  • GMC 12581476
    12581476
    HEAD, CYL(INCLUDES SEATS,GUIDES)(MUST USE TOGETHER WITH 11609296)("USE SILVER INTAKE BOLTS WHEN USING INTAKE GASKET WITHOUT SNOUTS,USE BLACK INTAKE BOLTS WHEN USING GASKET WITH SNOUTS)
    • Location: Passenger Side
    • Fitting Vehicle Options: CK2,3(L18)
    $984.75 $761.70
    1
    Add To Cart
  • GMC 12581477
    12581477
    HEAD, CYL(INCLUDES SEATS,GUIDES)(MUST USE TOGETHER WITH 11609296)("USE SILVER INTAKE BOLTS WHEN USING INTAKE GASKET WITHOUT SNOUTS,USE-BLACK INTAKE BOLTS WHEN USING GASKET WITH SNOUTS)
    • Location: Driver Side
    • Fitting Vehicle Options: CK2,3(L18)
    $368.66 $286.45
    1
    Add To Cart
  • GMC 97779580
    97779580
    HEAD, CYL(INCLUDES:VALVE GUIDE,PLUGS/HOUSING,FUEL INJECTION NOZZLE/ADAPTER,SEAL/VALVE SEAT)(INCLUDES 17-20,26,27,29,30)
    • Fitting Vehicle Options: CK2,3(LB7,NC1,NB6)
    • Require Quantity: 02
    • Package Quantity: 1
    $2603.59 $1639.88
    1
    Add To Cart
  • 12578925
    HEAD, CYL(INCLUDES 20,22)(EXCEPT VALVES)
    • Fitting Vehicle Options: CK1,2(LM7)
    • Require Quantity: 02
    • Package Quantity: 1
    $854.96 $538.50
  • 12685691
    HEAD, CYL(PARTIAL)(INCLUDES 20,22)
    • Fitting Vehicle Options: CK1,2,3(LQ4,MT1,KL5)
    • Require Quantity: 02
    • Package Quantity: 1
  • GMC 97779578
    97779578
    HEAD, CYL(INCLUDES 17-20,26,27,29,30)(INCLUDES GUIDES, SEATS, INJECTOR HOUSING)
    • Fitting Vehicle Options: CK2,3(LB7,NF2,NF4)
    • Require Quantity: 02
    • Package Quantity: 1
  • 11601765
    NUT, Spark Ignition, NUT,GLOW PLUG CONDUCTOR(PART OF 24)(2.559)
    • Require Quantity: 08
    • Package Quantity: 1
    $7.38 $4.69
    1
    Add To Cart
  • STUD, Intake & Exhaust Manifold
    11609296
    STUD, EXHAUST MANIFOLD(STRAIGHT,M8X1.25X30,M8X1.25XX12.5,EXTERNAL)(USED AT #1,2,3,5,6,7,8 RH & 1,2,3,4,6,7,8 LH)
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 14
    • Package Quantity: 10
    $6.82 $4.33
    10
    Add To Cart
  • 94340628
    STUD, INTAKE MANIFOLD
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 04
    • Package Quantity: 1
    $13.05
    1
    Add To Cart
  • RETAINER, Engine Valve Lifter
    12551399
    RETAINER, VALVE LIFTER GUIDE(1 PC)(RESTRICTOR)
    • Fitting Vehicle Options: CK2,3(L18)
    $30.09 $19.12
    1
    Add To Cart
  • GMC 12667021
    12667021
    RETAINER, VALVE LIFTER GUIDE
    • Fitting Vehicle Options: CK2,3(LB7)
    • Require Quantity: 04
    • Package Quantity: 1
    $10.80 $6.86
    1
    Add To Cart
  • SEAL, Engine Valve
    GMC 12555601
    12555601
    SEAL, VALVE STEM OIL
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 16
    • Package Quantity: 1
    $11.76 $7.10
    1
    Add To Cart
  • GMC 97212994
    97212994
    SEAL, VALVE STEM OIL(PACKING OF 16)
    • Fitting Vehicle Options: CK2,3(LB7)
    $13.05
    16
    Add To Cart
  • BRACKET, Engine Lift
    97229198
    BRACKET, ENGINE LIFT REAR
    • Fitting Vehicle Options: CK2,3(LB7,NF2)
    $39.70 $25.23
    1
    Add To Cart
  • 97288578
    BRACKET, ENGINE LIFT REAR
    • Fitting Vehicle Options: CK2,3(LB7,NC1,NF4)
  • CAP, Engine Valve Spring
    10166344
    CAP, VALVE SPRING(EXHAUST)
    • Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7)
    • Require Quantity: 16
    • Package Quantity: 1
    $12.60
    1
    Add To Cart
  • GMC 10213464
    10213464
    CAP, VALVE SPRING
    • Fitting Vehicle Options: CK2,3(L18)
    • Require Quantity: 16
    • Package Quantity: 35
    $8.76 $5.56
    35
    Add To Cart
  • STUD, Emission Control System
    11609953
    STUD, EGR VALVE(M8X1.25X11.5,M8X1.25X24,46 TL,STAINLESS)(3.275)
    • Require Quantity: 02
    • Package Quantity: 1
    $14.18 $7.52
    1
    Add To Cart
  • GMC 24501688
    24501688
    STUD, EGR VALVE(M8X1.25X16)(ONLY TO EGR ADAPT)
    • Require Quantity: 02
    • Package Quantity: 1
    $10.17 $5.05
    1
    Add To Cart
  • 12569721
    STUD, Engine Valve Adjusting, STUD,VALVE ROCKER ARM PIVOT(HEXAGON SPECIAL,M10X1.5X19,M8X1.0X18,20.8L X11 OUTSIDE DIAMETER SHIELD,65.4 TL,10.9)(USE THREAD SEALER 12346004 US (CANADA 10953480))
    • Require Quantity: 16
    • Package Quantity: 1
    $6.46 $3.90
    1
    Add To Cart
  • 19351578
    WIRE, Spark Plug or Coil, WIRE,SPARK PLUG(STYLE 12HHH, 7MM DIAMETER, 12IN LG)(CONTAINS 1 WIRE)
    • Require Quantity: 08
    • Package Quantity: 1
    $28.54 $12.60
    1
    Add To Cart
  • GASKET KIT, Engine Cylinder Head
    19368586
    GASKET KIT, CYL HEAD(INCLUDES 10,28)(INCLUDES GASKET,CYL HEAD,INTAKE MANIFOLD,EXHAUST MANIFOLD,VALVE ROCKER COVER,SEAL)
    • Fitting Vehicle Options: CK1,2(LM7)
    $453.23 $260.41
    1
    Add To Cart
  • 89017253
    GASKET KIT, CYL HEAD(EXCEPT:CYL HEAD BOLTS)(INCLUDES 10,28)(INCLUDE HEAD,INTKE & EXHAUST MANIFOLD GASKETS & COOLANT AIR BLEED PIPE SEALS)(INCLUDES GASKETS,SEAL)
    • Fitting Vehicle Options: CK1,2,3(LQ4)
    $468.97 $296.71
    1
    Add To Cart
  • 88894351
    GASKET KIT, CYL HEAD(INCLUDES:CYL HEAD BOLTS)(INCLUDES 10,28)
    • Fitting Vehicle Options: CK1,2,3(LQ4)
  • PLUG, Engine Oil Distribution
    GMC 94029583
    94029583
    PLUG, ENGINE BLOCK OIL GALLERY(OUTSIDE DIAMETER=12.3MM)(0.253)
    • Require Quantity: 02
    • Package Quantity: 1
    $1.88 $1.19
    1
    Add To Cart
  • 94033681
    PLUG, ENGINE BLOCK OIL GALLERY BALL(PART OF 25)(OUTSIDE DIAMETER=20)(0.253)
    • Require Quantity: 10
    • Package Quantity: 1
    $2.43 $1.44
    1
    Add To Cart
  • 97018606
    PLUG, ENGINE BLOCK OIL GALLERY BALL(M14X16.5)(0.206)
    • Require Quantity: 05
    • Package Quantity: 1
    • Replaced By: 97329617
    $29.77 $17.99
    1
    Add To Cart
  • SEAT, Cylinder Head Valve Seat
    GMC 97212571
    97212571
    SEAT, INTAKE VALVE(PART OF 25)(0.669)
    • Require Quantity: 08
    • Package Quantity: 1
    $9.03 $5.46
    1
    Add To Cart
  • GMC 97212572
    97212572
    SEAT, EXHAUST VALVE(PART OF 25)(0.669)
    • Require Quantity: 08
    • Package Quantity: 1
    $8.87 $5.36
    1
    Add To Cart
  • SUPPORT, Engine Valve Rocker Arm Shaft
    GMC 97224904
    97224904
    SUPPORT, VALVE ROCKER ARM SHAFT
    • Require Quantity: 02
    • Package Quantity: 1
    $33.67 $20.34
    1
    Add To Cart
  • 97224905
    SUPPORT, VALVE ROCKER ARM SHAFT(HAS TWO HOLES FOR INJECTOR HARNESS)
    • Require Quantity: 02
    • Package Quantity: 1
    $32.84 $20.87
    1
    Add To Cart
  • GMC 97224906
    97224906
    SUPPORT, VALVE ROCKER ARM SHAFT
    $31.16 $19.80
    1
    Add To Cart
  • SHIELD, Exhaust Manifold
    12555623
    SHIELD, EXHAUST MANIFOLD HEAT
    • Location: Driver Side
  • 12576124
    SHIELD, EXHAUST MANIFOLD HEAT
    • Location: Passenger Side
  • MANIFOLD, Engine Exhaust Manifold
    GMC 12557286
    12557286
    MANIFOLD, EXHAUST
    • Location: Passenger Side
    • Fitting Vehicle Options: CK2,3(L18,MN8,M74,ML6)
  • GMC 12557287
    12557287
    MANIFOLD, EXHAUST(WITHOUT AIR INJECTOR REACTOR)
    • Location: Driver Side
    • Fitting Vehicle Options: CK2,3(L18)
  • 11609746
    NUT, HEX FLANGED HEAD,M8X1.25,8.9THK,17.6 O.D.,10 STEEL,GMW3200, PREVENT TORQUE(SECONDARY AIR INJECTION PIPE)
    • Require Quantity: 02
    • Package Quantity: 12
    $4.42 $2.67
    12
    Add To Cart
Genuine GM Parts, the Right Choice
GMPartsGiant.com offers the wholesale prices for genuine 2003 GMC Sierra 2500 HD 4WD parts. Parts like Engine Assembly-Cylinder Head & Related Parts are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 6.0L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L. Model Code: 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB.