Engine Assembly-Cylinder Head & Related Parts fit your 2003 Chevrolet Avalanche 2500 2WD

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2003 Chevrolet Avalanche 2500 2WD

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Vehicle Options

8 Cyl 8.1L; Avalanche 3/4 Ton

Vehicle Options

8 Cyl 8.1L; Avalanche 3/4 Ton

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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

Maintenance Parts, Fluids, Capacities, Electrical Connectors

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Starter, Generator, Ignition, Electrical, Lamps

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

11570082
BOLT, Intake & Exhaust Manifold, BOLT,EXHAUST MANIFOLD(M8X1.25X22X19)(8.900)
- Require Quantity: 02
- Package Quantity: 10
$8.00 $5.08
10
Add To Cart

11609746
NUT, Exhaust Manifold Bolt, NUT,EXHAUST MANIFOLD(M8X1.25,8.9THK)(8.917)
- Require Quantity: 14
- Package Quantity: 12
$4.42 $2.67
12
Add To Cart

11516480
BOLT, Ignition Coil Mounting, BOLT,IGNITION COIL(M6X1X25-10MM SOCKET)
- Require Quantity: 16
- Package Quantity: 1
$12.60
1
Add To Cart

12679800
SPARK PLUG, Spark Ignition, SPARK PLUG,GASOLINE ENGINE IGNITION(PLATINUM PLUG)
- Require Quantity: 08
- Package Quantity: 1
$12.98 $7.24
1
Add To Cart

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

VALVE, Exhaust
12558849
VALVE, EXHAUST(STD)(OS)
Require Quantity: 08
Package Quantity: 1
Replaced By: 19433168
$99.21 $63.05
1
Add To Cart
12559084
VALVE, EXHAUST(0.003 OVERSIZE)
- Require Quantity: 08
- Package Quantity: 1
$84.42 $38.99
1
Add To Cart
12559086
VALVE, EXHAUST(0.030" OS)
- Require Quantity: 08
- Package Quantity: 1
$83.25 $38.22
1
Add To Cart
19206511
VALVE, EXHAUST(0.015 OVERSIZE)
- Require Quantity: 08
- Package Quantity: 1
$128.81 $81.86
1
Add To Cart

12559598
BOLT, Engine Camshaft & Valve Rocker Cover, BOLT,VALVE ROCKER ARM COVER(M6X1.0XX26)
- Require Quantity: 14
- Package Quantity: 1
$13.59 $8.64
1
Add To Cart

12570555
COVER, Engine Valve Rocker & Camshaft, COVER,VALVE ROCKER ARM(INCLUDES 517)(INCLUDES COVER,GASKET)
- Require Quantity: 02
- Package Quantity: 1
$171.97 $82.34
1
Add To Cart

11609296
STUD, Intake & Exhaust Manifold, 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)
- Require Quantity: 14
- Package Quantity: 10
$6.82 $4.33
10
Add To Cart

GUIDE, Engine Valve Push Rod Cover
12551397
GUIDE, VALVE LIFTER(ACCOMMODATES 2 VALVE LFTRS EACH)
Require Quantity: 08
Package Quantity: 10
$5.16 $3.27
10
Add To Cart
12562369
GUIDE, VALVE LIFTER PUSH ROD
- Require Quantity: 08
- Package Quantity: 1
$12.60
1
Add To Cart

12551399
RETAINER, Engine Valve Lifter, RETAINER,VALVE LIFTER GUIDE(1 PC)(RESTRICTOR)
$30.09 $19.12
1
Add To Cart

12555601
SEAL, Engine Valve, SEAL,VALVE STEM OIL
- Require Quantity: 16
- Package Quantity: 1
$11.76 $7.10
1
Add To Cart

VALVE, Intake
12556317
VALVE, INTAKE(STD)
Require Quantity: 08
Package Quantity: 1
$55.59 $35.32
1
Add To Cart
19206512
VALVE, INTAKE(0.015" OVERSIZE)
- Require Quantity: 08
- Package Quantity: 1
$33.73 $20.38
1
Add To Cart

GASKET, Engine Camshaft & Valve Rocker Cover
12557831
GASKET, VALVE ROCKER ARM COVER BOLT(GRAY)(0.413)
Require Quantity: 14
Package Quantity: 1
$13.24 $8.00
1
Add To Cart
12559597
GASKET, VALVE ROCKER ARM COVER(PART OF 520)
- Require Quantity: 02
- Package Quantity: 1
$36.54 $23.21
1
Add To Cart

12558275
GASKET, Manifold to Cylinder Head, GASKET,EXHAUST MANIFOLD
- Require Quantity: 02
- Package Quantity: 1
$73.13 $46.47
1
Add To Cart

12563371
GASKET, Emission System, GASKET,EGR VALVE PIPE(BETWEEN EXHAUST MANIFOLD & EGR PIPE)(SMALL HOLE-GASKET)
$9.20 $4.51
1
Add To Cart

14102542
NUT, Engine Valve Adjusting, NUT,VALVE ROCKER ARM(13MM HEXAGON,M8X1.0-6H)(NON-ADJUSTABLE)
- Require Quantity: 16
- Package Quantity: 20
$10.73 $6.61
20
Add To Cart

17120060
LIFTER, Engine Valve Lifter, LIFTER,VALVE
- Require Quantity: 16
- Package Quantity: 1
- Replaced By: 12722012
$62.12 $37.53
1
Add To Cart

10213464
CAP, Engine Valve Spring, CAP,VALVE SPRING
- Require Quantity: 16
- Package Quantity: 35
$8.76 $5.56
35
Add To Cart

10240899
ROTATOR, Engine Valve Spring, ROTATOR,VALVE
- Require Quantity: 16
- Package Quantity: 1
$22.07 $13.32
1
Add To Cart

BOLT, Engine Cylinder Head
11519111
BOLT, CYL HEAD(M10X1.5X103)
Require Quantity: 24
Package Quantity: 1
$8.69 $5.25
1
Add To Cart
11519112
BOLT, CYL HEAD(M10X1.5X86)
- Require Quantity: 04
- Package Quantity: 1
$7.50 $4.53
1
Add To Cart
11519113
BOLT, CYL HEAD(M10X1.5X52)
- Require Quantity: 08
- Package Quantity: 1
$7.72 $4.66
1
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
24501688
STUD, EGR VALVE(M8X1.25X16)(ONLY TO EGR ADAPT)
- Require Quantity: 02
- Package Quantity: 1
$10.17 $5.05
1
Add To Cart

ROD, Engine Valve Push Rod
12556295
ROD, VALVE PUSH(INTAKE)
Require Quantity: 08
Package Quantity: 1
$24.63 $14.87
1
Add To Cart
12556296
ROD, VALVE PUSH(EXHAUST)
- Require Quantity: 08
- Package Quantity: 1
$23.00 $13.89
1
Add To Cart

12556298
ARM, Engine Valve Rocker, ARM,VALVE ROCKER
- Require Quantity: 16
- Package Quantity: 1
$41.96 $25.34
1
Add To Cart

12556299
BALL, Engine Valve Adjusting, BALL,VALVE ROCKER ARM
- Require Quantity: 16
- Package Quantity: 1
$13.86 $12.60
1
Add To Cart

12558081
PIN, Engine Cylinder Head, PIN,CYL HEAD LOCATING(1/2 X 5/8 O.D.)
- Require Quantity: 04
- Package Quantity: 5
$4.34 $2.61
5
Add To Cart

GASKET, Engine Cylinder Head
12558163
GASKET, CYL HEAD
Location: Driver Side
$57.14 $36.32
1
Add To Cart
12558164
GASKET, CYL HEAD
- Location: Passenger Side
$67.00 $40.48
1
Add To Cart

12565763
SPRING, Engine Valve, SPRING,VALVE
- Require Quantity: 16
- Package Quantity: 1
$8.49 $5.40
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

HEAD, Engine Cylinder
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
$984.75 $761.70
1
Add To Cart
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
$368.66 $286.45
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

3947880
KEY, Engine Valve Spring Cap, KEY,VALVE STEM
- Require Quantity: 32
- Package Quantity: 25
$2.11 $1.76
25
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
12557286
MANIFOLD, EXHAUST
Location: Passenger Side
Fitting Vehicle Options: CK2,3(L18,MN8,M74,ML6)
12557287
MANIFOLD, EXHAUST(WITHOUT AIR INJECTOR REACTOR)
- Location: Driver Side
- Fitting Vehicle Options: CK2,3(L18)

12571861
PIPE, Emission System, PIPE,EGR VALVE(EXHAUST TO EGR BRACKET)

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 Chevrolet Avalanche 2500 2WD 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 8.1L. Model Code: 3/4 TON.