Engine Assembly-Cylinder Block & Related Parts fit your 2021 GMC Sierra 2500 HD Denali 4WD

Currently shopping for
2021 GMC Sierra 2500 HD Denali 4WD
Change Vehicle
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
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
Sort by:
Recommended
Part No. & Part Description
Price & Qty.
Part No. &
Part Description
  • BOLT, Distributor (also Knock Sensor)
    11588711
    BOLT, CRANKSHAFT POSITION SENSOR(M6X1X16, 14.2 OUTSIDE DIAMETER)(HEX FLANGED HEAD)(10 THREAD, 8.8 STEEL)(8.900)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
    $7.39 $4.69
    1
    Add To Cart
  • GMC 11588722
    11588722
    BOLT, CRANKSHAFT POSITION SENSOR(M8X20)(3.675)
    • Fitting Vehicle Options: CK2,3(03-43-53)
    $0.23 $0.14
    1
    Add To Cart
  • GMC 11588722
    11588722
    BOLT, KNOCK SENSOR SHIELD(M8X20)(3.675)
    • Fitting Vehicle Options: CK2,3(03-43-53)
    $0.23 $0.14
    1
    Add To Cart
  • GMC 55585169
    55585169
    BOLT, CRANKSHAFT POSITION SENSOR RELUCTOR RING(PART OF 35)
    • Fitting Vehicle Options: CK2,3(03-43-53)
    • Require Quantity: 03
    • Package Quantity: 1
    $2.38 $1.51
    1
    Add To Cart
  • GMC 11561256
    11561256
    BOLT, KNOCK SENSOR(PART OF 13)(M8X1.25X39)(8.900)
    • Fitting Vehicle Options: CK2,3(03-43-53)
  • 11515758
    BOLT, Engine Timing, BOLT,TIMING CHAIN TENSIONER(PART OF 36)(M8X1.25X30)(8.900)
    • Require Quantity: 02
    • Package Quantity: 10
    $1.86 $1.12
    10
    Add To Cart
  • BOLT, Engine Clutch Housing
    11515781
    BOLT, FLYWHEEL HOUSING(M12X1.75X60,30 THREAD)(FLANGE)(8.900)
    • Require Quantity: 04
    • Package Quantity: 5
    $7.18 $4.56
    5
    Add To Cart
  • 11548907
    BOLT, FLYWHEEL HOUSING
    $4.74 $3.01
    1
    Add To Cart
  • PLUG, Engine Block
    11588468
    PLUG, ENGINE BLOCK COOLANT DRAIN HOLE(M10X1.5X15)(4.115)
    • Fitting Vehicle Options: CK2,3(L5P)
    • Require Quantity: 02
    • Package Quantity: 10
    $1.47 $0.94
    10
    Add To Cart
  • 11611351
    PLUG, ENGINE BLOCK COOLANT DRAIN HOLE(M28X1.25X13)(8.971)
    • Fitting Vehicle Options: CK2,3(L8T)
    $23.11 $14.68
    1
    Add To Cart
  • GMC 11546667
    11546667
    PLUG, ENGINE BLOCK COOLANT DRAIN HOLE(M16X1.5X16.25)
    • Fitting Vehicle Options: CK2,3(L8T)
    $7.03 $4.46
    1
    Add To Cart
  • 94399639
    PLUG, ENGINE BLOCK COOLANT DRAIN HOLE(OUTSIDE DIAMETER=40MM)
    • Fitting Vehicle Options: CK2,3(L5P)
    • Require Quantity: 07
    • Package Quantity: 30
    $7.03 $4.46
    30
    Add To Cart
  • BEARING KIT, Engine Connecting Rod
    12683811
    BEARING KIT, CONNECT ROD
    • Fitting Vehicle Options: CK2,3(L8T,MYD)
    $12.12 $9.70
    1
    Add To Cart
  • GMC 12685817
    12685817
    BEARING KIT, CONNECT ROD
    • Fitting Vehicle Options: CK2,3(L5P)
    • Require Quantity: 08
    • Package Quantity: 1
    $14.81 $9.41
    1
    Add To Cart
  • PLUG, Engine Oil Distribution
    GMC 12651561
    12651561
    PLUG, ENGINE BLOCK OIL GALLERY(19MM)
    • Fitting Vehicle Options: CK2,3(L5P)
    • Require Quantity: 05
    • Package Quantity: 1
    $1.16 $0.72
    1
    Add To Cart
  • GMC 11546667
    11546667
    PLUG, ENGINE BLOCK OIL GALLERY(M16X1.5X16.25)(0.034)
    • Fitting Vehicle Options: CK2,3(L8T)
    $7.03 $4.46
    1
    Add To Cart
  • GMC 12661074
    12661074
    PLUG, ENGINE BLOCK OIL GALLERY(INCLUDES 9)(OIL GALLEY)(LOWER)(W/O-RING)
    • Fitting Vehicle Options: CK2,3(L8T)
    $5.02 $3.19
  • 11611991
    PLUG, ENGINE BLOCK OIL GALLERY
    • Fitting Vehicle Options: CK2,3(L5P)
    • Require Quantity: 04
    • Package Quantity: 1
    $5.12 $3.26
  • BOLT, Engine Crankshaft Pulley And Balancer
    11547372
    BOLT, CRANKSHAFT BALANCER(SINGLE USE)(M16X2X103)(SEE BULLETIN PIP5156 TO SEE GENERATOR 4/5 CROSS.SHAFT BALANCER BOLT DIFFERENTIAL)
    • Fitting Vehicle Options: CK2,3(L8T)
    $37.61 $22.73
    1
    Add To Cart
  • 97329601
    BOLT, CRANKSHAFT BALANCER(SINGLE USE)(12 POINT HEAD)(RIGHT HAND THREAD)
    • Fitting Vehicle Options: CK2,3(L5P)
    $21.27 $12.22
    1
    Add To Cart
  • PIN, Engine Clutch Housing or Transmission
    1453658
    PIN, TRANS LOCATING(5/8 X 1 3/16)(8.939)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L8T,MYD)
    • Require Quantity: 02
    • Package Quantity: 1
    • Replaced By: 12720455
    $7.40 $4.69
    1
    Add To Cart
  • GMC 12623048
    12623048
    PIN, FLYWHEEL HOUSING LOCATING
    • Fitting Vehicle Options: K2,3(L5P)
    • Require Quantity: 02
    • Package Quantity: 1
    $7.71 $4.88
    1
    Add To Cart
  • 12720455
    PIN, TRANS LOCATING
    • Fitting Vehicle Options: CK2,3(L8T,MYD)
    • Require Quantity: 02
    • Package Quantity: 1
    $7.40 $4.69
    1
    Add To Cart
  • SEAL, Engine Rear Main Bearing
    97209342
    SEAL, CRANKSHAFT REAR OIL
    • Fitting Vehicle Options: CK2,3(L5P)
    $75.99 $43.67
    1
    Add To Cart
  • 12665076
    SEAL, CRANKSHAFT REAR OIL(SINGLE USE)(PART OF 18)(SINGLE USE)(W/O INSTRUCTION SHEET)
    • Fitting Vehicle Options: CK2,3(L8T)
    $40.94 $26.02
    1
    Add To Cart
  • 11588327
    RETAINER, Engine Timing, RETAINER,TIMING CHAIN TENSIONER BOLT(PART OF 36)(ROUND M8 BOLT)(4.128)
    • Require Quantity: 02
    • Package Quantity: 1
    $7.39 $4.69
    1
    Add To Cart
  • BEARING KIT, Engine Crankshaft Main
    GMC 12682028
    12682028
    BEARING KIT, CRANKSHAFT(INCLUDES 25,37,39)(COMPLETE MAIN BEARING KIT POSITIONS 1-5)
    • Fitting Vehicle Options: CK2,3(L8T,MYD)
    • Replaced By: 12729655
    $75.68 $58.96
    1
    Add To Cart
  • GMC 12677680
    12677680
    BEARING KIT, CRANKSHAFT(INCLUDES 20,26,36)(STD SIZE)
    • Fitting Vehicle Options: CK2,3(L5P)
    • Replaced By: 12704537
    $81.46 $51.77
    1
    Add To Cart
  • BOLT, Engine Main Bearing Cap
    11546565
    BOLT, CRANKSHAFT BEARING CAP(SINGLE USE)(M8X1.25X25)(HEXAGON FLANGE)(SINGLE USE)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
    • Require Quantity: 10
    • Package Quantity: 1
    $7.02 $4.46
    1
    Add To Cart
  • 11548076
    BOLT, CRANKSHAFT BEARING CAP(M10X2X96)(SINGLE USE)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
    • Require Quantity: 10
    • Package Quantity: 1
    $7.02 $4.46
    1
    Add To Cart
  • 11548075
    BOLT, CRANKSHAFT BEARING CAP(M10X2X82)(SINGLE USE)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
    • Require Quantity: 10
    • Package Quantity: 1
    $7.02 $4.46
    1
    Add To Cart
  • 11547203
    BOLT, CRANKSHAFT BEARING CAP
    • Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
    • Require Quantity: 10
    • Package Quantity: 1
    $5.86 $3.72
    1
    Add To Cart
  • 11610683
    BOLT, CRANKSHAFT BEARING CAP(USE TOGETHER WITH SEALANT 12346004)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
    • Require Quantity: 10
    • Package Quantity: 1
    $7.02 $4.46
    1
    Add To Cart
  • 22531637
    PIN, Engine Rear Main Bearing, PIN,CRANKSHAFT REAR OIL SEAL HOUSING LOCATING(PART OF 18)(8MM DIAMETER,12MM LONG)(DOWEL)(0.413)
    • Require Quantity: 02
    • Package Quantity: 10
    $5.11 $3.24
    10
    Add To Cart
  • SENSOR, Distributor (also Knock Sensor)
    12623095
    SENSOR, KNOCK(INCLUDES 14)
    • Fitting Vehicle Options: CK2,3(L8T)
    • Require Quantity: 02
    • Package Quantity: 1
    $42.02 $22.26
    1
    Add To Cart
  • GMC 12641040
    12641040
    SENSOR, CRANKSHAFT POSITION(INCLUDES 56)
    • Fitting Vehicle Options: CK2,3(L5P)
    $37.62 $19.94
    1
    Add To Cart
  • 12669636
    SENSOR, CRANKSHAFT POSITION(INCLUDES 50)(MATING CONNECTOR USE 19299690)
    • Fitting Vehicle Options: CK2,3(L8T)
    $51.84 $27.48
    1
    Add To Cart
  • 94034146
    GASKET, Engine Block, GASKET,ENGINE BLOCK COOLANT DRAIN HOLE PLUG(INSIDE DIAMETER:10.2 OUTSIDE DIAMETER:15.2)(1.844)
    • Require Quantity: 02
    • Package Quantity: 10
    $5.02 $3.19
    10
    Add To Cart
  • BOLT, Engine Connecting Rod Cap
    11548432
    BOLT, CONNECT ROD(PART OF 3)
    • Fitting Vehicle Options: CK2,3(L8T)
    • Require Quantity: 02
    • Package Quantity: 1
    $1.72 $1.09
    1
    Add To Cart
  • 11611760
    BOLT, CONNECT ROD(PART OF 53)
    • Fitting Vehicle Options: CK2,3(L5P)
    • Require Quantity: 16
    • Package Quantity: 1
    $5.26 $3.35
    1
    Add To Cart
  • BEARING, Engine Camshaft & Balance Shaft Front
    12631285
    BEARING, CAMSHAFT(POSITION 1)(BEARING IS UNFINISHED REQUIRES LINE BORING)
    $7.39 $4.69
    1
    Add To Cart
  • 12631286
    BEARING, CAMSHAFT(POSITIVE 2,3,4,5)(BEARING IS UNFINISHED REQUIRES LINE BORING)
    • Require Quantity: 04
    • Package Quantity: 1
    $7.38 $4.69
    1
    Add To Cart
  • RETAINER, Engine Piston Pin
    12656762
    RETAINER, PISTON PINION(PART OF 1)
    • Fitting Vehicle Options: CK2,3(L5P)
    • Require Quantity: 16
    • Package Quantity: 1
    $7.01 $4.46
    1
    Add To Cart
  • GMC 1647383
    1647383
    RETAINER, PISTON PINION(PART OF 1)
    • Fitting Vehicle Options: CK2,3(L8T)
    • Require Quantity: 08
    • Package Quantity: 1
    $8.90 $5.65
    1
    Add To Cart
  • RING KIT, Engine Piston
    GMC 12661872
    12661872
    RING KIT, PISTON(.5MM)(OUTSIDE)
    • Require Quantity: 08
    • Package Quantity: 1
    $142.03 $90.27
    1
    Add To Cart
  • GMC 12661871
    12661871
    RING KIT, PISTON(STD SIZE)
    • Require Quantity: 08
    • Package Quantity: 1
  • ROD, Engine Piston
    12675746
    ROD, CONNECT(INCLUDES 4)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
    • Require Quantity: 08
    • Package Quantity: 1
    $79.93 $50.81
    1
    Add To Cart
  • 12680192
    ROD, CONNECT(INCLUDES 3,50,51)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
    • Require Quantity: 08
    • Package Quantity: 1
    $104.46 $66.40
  • CRANKSHAFT, Engine
    12677566
    CRANKSHAFT, (INCLUDES 21,23,25,30,34)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
    $918.67 $710.59
    1
    Add To Cart
  • 12708884
    CRANKSHAFT, (INCLUDES 23,38,40)
    • Fitting Vehicle Options: CK2,3(L8T)
    $1190.78 $750.01
    1
    Add To Cart
  • BALANCER, Engine Crankshaft And Camshaft Balancer
    GMC 12702576
    12702576
    BALANCER, CRANKSHAFT
    • Fitting Vehicle Options: CK2,3(L5P)
    • Replaced By: 12723412
    $157.92 $100.36
    1
    Add To Cart
  • GMC 12680364
    12680364
    BALANCER, CRANKSHAFT
    • Fitting Vehicle Options: CK2,3(L8T)
    $125.57 $79.82
  • PISTON KIT, Engine Piston
    12693468
    PISTON KIT, ENGINE(INCLUDES 2,54,55)
    • Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
    • Require Quantity: 08
    • Package Quantity: 1
    $210.45 $133.14
    1
    Add To Cart
  • GMC 12699527
    12699527
    PISTON KIT, ENGINE(INCLUDES 55,56)(STD)
    • Location: Passenger Side
    • Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
    • Require Quantity: 04
    • Package Quantity: 1
    $94.69 $60.19
    1
    Add To Cart
  • 12699528
    PISTON KIT, ENGINE(INCLUDES 55,56)(.5MM OVERSIZE)
    • Location: Passenger Side
    • Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
    • Require Quantity: 04
    • Package Quantity: 1
    $120.85 $76.80
    1
    Add To Cart
  • GMC 12699529
    12699529
    PISTON KIT, ENGINE(INCLUDES 55,56)(STD)
    • Location: Driver Side
    • Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
    • Require Quantity: 04
    • Package Quantity: 1
    $42.61 $27.08
    1
    Add To Cart
  • 12699530
    PISTON KIT, ENGINE(INCLUDES 55,56)(.5MM OVERSIZE)
    • Location: Driver Side
    • Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
    • Require Quantity: 04
    • Package Quantity: 1
    $120.85 $76.80
    1
    Add To Cart
  • SEALANT, Maintenance Products
    GMC 19369831
    19369831
    SEALANT, ROOM TEMPERATURE VULCANIZING SILICONE(1217H)(THREEBOND)(CRANKSHAFT REAR OIL SEAL HOUSING)
    $39.90 $22.24
    1
    Add To Cart
  • GMC 19369831
    19369831
    SEALANT, ROOM TEMPERATURE VULCANIZING SILICONE(1217H)(THREEBOND)(FLYWHEEL HOUSING)
    $39.90 $22.24
    1
    Add To Cart
  • 24502262
    PLUG, Engine Cylinder Head, PLUG,CYL HEAD CORE HOLE(PART OF 24)(INCLUDES 40)(1.014 OUTSIDE DIAMETER,.32 THICK,FROM .05 THICK 304 STAINLESS)
    $7.03 $4.46
    1
    Add To Cart
Genuine GM Parts, the Right Choice
GMPartsGiant.com offers the wholesale prices for genuine 2021 GMC Sierra 2500 HD Denali 4WD parts. Parts like Engine Assembly-Cylinder Block & 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 6.6L, 8 Cyl 6.6L Diesel. Model Code: CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON.