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  1. Home
  2. Chevrolet Trucks
  3. 2003
  4. Trailblazer EXT 4WD
  5. Engine Straight 6 Cylinders

2003 Chevrolet Trucks Trailblazer EXT 4WD engine straight 6 cylinders parts catalog

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Bolt, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 11517523
  • Quantity in car: 4
  • Hex flanged head, m6x1x45, 17thd, 14.2 outside diameter, header point, 9.8, 6280m (throttle actuator control module)

$2.76—4.39

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 11517590
  • Quantity in car: 4
  • Hex flanged head m6x1x25, 21.5 thread, 14.2 outside diameter, 9.8, 7114m, machine, header-point (fuel injector)

$0.47—2.81

Available in 2 shops

Add to cart

Stud, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 11517674
  • Quantity in car: 2
  • Secondary air injection pipe cover
  • Usage: ST1 (LL8)

$3.32—5.91

Available in 38 shops

Add to cart

Stud, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 11518994
  • Quantity in car: 2
  • Secondary air injection pipe cover
  • Usage: ST1 (LL8)

$3.16—3.88

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 11588352
  • Quantity in car: 10
  • Usage: ST1 (LL8), ST1 (LL8)

$2.40—4.49

Available in 38 shops

Add to cart

Stud, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 11589264
  • Quantity in car: 3

$6.97—11.75

Available in 38 shops

Add to cart

Nut, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 11609411
  • Quantity in car: 4
  • Hexagon with conical washer, m6x1, 5.7 thick, 16 outside diameter, 9, gmw3200 (exhaust manifold heat shield)

$0.35—0.41

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 11609481
  • Quantity in car: 11
  • Hexagon flanged head, m8x1.25x33, 23.9 thread, 18 outside diameter, 9.8, gmw3179w, adh gm6194m (exhaust manifold)

$1.45—1.56

Available in 2 shops

Add to cart

Body, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12568580
  • Quantity in car: 1
  • Throttle (with throttle actuator)
  • Usage: ST1 (LL8)

$256.60—298.91

Available in 38 shops

Add to cart

Cap, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12569017
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$3.36—4.20

Available in 38 shops

Add to cart

Cover, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12571702
  • Quantity in car: 1
  • Secondary air injection pipe
  • Usage: ST1 (LL8)

$4.50

Available in 1 shop

Add to cart

Cover, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12574378
  • Quantity in car: 1
  • Secondary air injection pipe
  • Usage: ST1 (LL8)

$3.89—6.84

Available in 38 shops

Add to cart

Gasket, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12575463
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$3.87—4.36

Available in 38 shops

Add to cart

Hose, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12575660
  • Quantity in car: 1
  • Positive crankcase ventilation (dirty air) (positive crankcase ventilation intake manifold to cylinder head portion)
  • Usage: ST1 (LL8)

$8.17—10.10

Available in 38 shops

Add to cart

Manifold, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12587310
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$155.74—268.05

Available in 38 shops

Add to cart

Shield, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12587963
  • Quantity in car: 1
  • Exhaust manifold heat
  • Usage: ST1 (LL8), ST1 (LL8)

$34.44—65.50

Available in 38 shops

Add to cart

Gasket, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12595010
  • Quantity in car: 1
  • Exhaust manifold
  • Usage: ST1 (LL8)

$7.88—8.66

Available in 38 shops

Add to cart

Sensor, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 12614970
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$38.96—127.65

Available in 39 shops

Add to cart

Clamp, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 15734741
  • Quantity in car: 1
  • Positive crankcase ventilation hose (18.4mm diameter)
  • Usage: ST1 (LL8), ST1 (LL8)

$3.56—3.86

Available in 38 shops

Add to cart

Seal, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 16194007
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$3.78—4.36

Available in 38 shops

Add to cart

Gasket, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 24577193
  • Quantity in car: 1
  • Secondary air injection pipe cover
  • Usage: ST1 (LL8)

$4.18—8.44

Available in 38 shops

Add to cart

Stud, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 24577539
  • Quantity in car: 4
  • Usage: ST1 (LL8), ST1 (LL8)

$3.51—5.72

Available in 38 shops

Add to cart

Retainer, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 24577587
  • Quantity in car: 1
  • Manifold absolute pressure sensor
  • Usage: ST1 (LL8)

$3.66—4.07

Available in 38 shops

Add to cart

Module, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 25312095
  • Quantity in car: 1
  • Throttle actuator cont (throttle body)
  • Usage: ST1 (LL8)

$215.18—251.58

Available in 38 shops

Add to cart

Manifold, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 88890560
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$142.78—163.83

Available in 38 shops

Add to cart

Gasket kit, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 88890561
  • Quantity in car: 1
  • Exhaust manifold
  • Usage: ST1 (LL8)

$9.68—11.95

Available in 38 shops

Add to cart

Manifold, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 89017800
  • Quantity in car: 1
  • Int (service) (includes manifold bolts, gaskets, & cover;does not include throttle body & manifold absolute pressure sensor)
  • Usage: ST1 (LL8)

$226.12—428.14

Available in 38 shops

Add to cart

Gasket kit, engine assembly 4.2l l6 manifolds and fuel related parts (ll8/4.2s)

  • OEM part number: 89017871
  • Quantity in car: 1
  • Intake manifold
  • Usage: ST1 (LL8), ST1 (LL8)

$12.30—14.71

Available in 38 shops

Add to cart

Plug, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 01647544
  • Quantity in car: 2
  • Cylinder head access hole (m24x1.5x12) (round head, int hexagon, with seal, nylon)
  • Usage: ST1 (LL8), ST1 (LL8)

$?

Add to cart

Nut, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 11504978
  • Quantity in car: 2
  • Unit-type m6x1 pnls 13.5 deep zor

$1.43—3.29

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 11517518
  • Quantity in car: 1
  • Hex flanged head, m6x1x20, 17.9 thread, 14.2 outside diameter, 9.8, tin zinc (camshaft position actuator)

$2.90—3.31

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 11519038
  • Quantity in car: 2
  • Cylinder head (bolt-hexagon flanged head, m6x1x30, 24 thread, 13.2 outside diameter, 10.9, gmw3359)
  • Usage: ST1 (LL8)

$2.71—3.42

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 11519306
  • Quantity in car: 1
  • Cylinder head (bolt-hex flanged head, m6x1x88.3, 17 thread, 14.2 outside diameter, 10.9, 4435m, machine, 6194m, header-point)
  • Usage: ST1 (LL8)

$3.31—4.03

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 11562004
  • Quantity in car: 3
  • Hexagon with flat washer, m10x1.5x30, 19 thread, 20 outside diameter, 8.8, gmw3200, machine, m-point (engine lift front bracket)

$2.57—4.97

Available in 38 shops

Add to cart

Plug, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 11562125
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$2.71—3.43

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 11562426
  • Quantity in car: 1
  • Hex flanged head, m6x1x25, 18 thread, 14.2 outside diameter, 10.9 steel gmw3359 (camshaft position sensor)

$4.18—5.17

Available in 38 shops

Add to cart

Plug, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 11609916
  • Quantity in car: 2
  • Usage: ST1 (LL8)

$2.46—6.45

Available in 38 shops

Add to cart

Gasket kit, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12482715
  • Quantity in car: 1
  • Cylinder head (has crankcase ventilation system/no positive crankcase ventilation valve)
  • Usage: ST1 (LL8)

$120.33—208.61

Available in 38 shops

Add to cart

Camshaft, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12563065
  • Quantity in car: 1
  • Intake (machining)
  • Usage: ST1 (LL8)

$222.64—249.28

Available in 2 shops

Add to cart

Sensor, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12564512
  • Quantity in car: 1
  • Engine coolant temp (2-way female)
  • Usage: ST1 (LL8), ST1 (LL8)

$0.28—32.38

Available in 2 shops

Add to cart

Bolt, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12568079
  • Quantity in car: 14
  • Usage: ST1 (LL8)

$2.93—3.29

Available in 2 shops

Add to cart

Valve, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12569014
  • Quantity in car: 12
  • Intake (.075mm oversize)
  • Usage: ST1 (LL8)

$77.97—87.30

Available in 2 shops

Add to cart

Valve, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12569015
  • Quantity in car: 12
  • Exhaust (.075 oversize)
  • Usage: ST1 (LL8)

$81.16—91.32

Available in 2 shops

Add to cart

Plug, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12569484
  • Quantity in car: 1
  • Secondary air injection pipe hole (12.7mm)
  • Usage: ST1 (LL8)

$3.29—5.27

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12570816
  • Quantity in car: 29
  • Usage: ST1 (LL8), ST1 (LL8)

$4.32—5.77

Available in 38 shops

Add to cart

Bracket, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12572633
  • Quantity in car: 1
  • Engine lift front
  • Usage: ST1 (LL8), ST1 (LL8)

$14.38—24.72

Available in 38 shops

Add to cart

Adjuster, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12572638
  • Quantity in car: 24
  • Hydraulic valve lash
  • Usage: ST1 (LL8), ST1 (LL8)

$10.65—29.92

Available in 40 shops

Add to cart

Cap, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12573337
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$7.70—16.80

Available in 38 shops

Add to cart

Sensor, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12584079
  • Quantity in car: 1
  • Camshaft position (with angle connector)
  • Usage: ST1 (LL8)

$27.30—62.14

Available in 38 shops

Add to cart

Cover, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12591994
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$123.02—127.69

Available in 2 shops

Add to cart

Spring, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12596078
  • Quantity in car: 24
  • Valve
  • Usage: ST1 (LL8)

$5.75—7.04

Available in 38 shops

Add to cart

Seal, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12596994
  • Quantity in car: 24
  • Valve stem oil
  • Usage: ST1 (LL8)

$4.38—7.74

Available in 37 shops

Add to cart

Valve, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12615873
  • Quantity in car: 1
  • Camshaft position actuator solenoid
  • Usage: ST1 (LL8), ST1 (LL8)

$36.40—50.91

Available in 38 shops

Add to cart

Insulator, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12615912
  • Quantity in car: 21
  • Camshaft cover bolt (includes bolt, grommet)
  • Usage: ST1 (LL8), ST1 (LL8)

$10.69—18.95

Available in 38 shops

Add to cart

12625058 genuine OEM part.

Spark plug, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 12625058
  • Quantity in car: 6
  • (iridium)
  • Usage: ST1 (LL8)

$5.78—17.87

Available in 3 shops

Add to cart

Head, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 19207470
  • Quantity in car: 1
  • Cylinder (machining)
  • Usage: ST1 (LL8), ST1 (LL8)

$767.80—1128.30

Available in 38 shops

Add to cart

Seal, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 24100002
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$0.43

Available in 1 shop

Add to cart

Armature, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 24100294
  • Quantity in car: 24
  • Valve rocker
  • Usage: ST1 (LL8), ST1 (LL8)

$2.82—149.84

Available in 39 shops

Add to cart

Valve, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 24576974
  • Quantity in car: 12
  • Intake (standard)
  • Usage: ST1 (LL8)

$11.98—21.19

Available in 38 shops

Add to cart

Valve, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 24576975
  • Quantity in car: 12
  • Exhaust (standard)
  • Usage: ST1 (LL8)

$17.85—31.61

Available in 38 shops

Add to cart

Camshaft, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 24577279
  • Quantity in car: 1
  • Exhaust (machining)
  • Usage: ST1 (LL8), ST1 (LL8)

$221.53—392.14

Available in 38 shops

Add to cart

Plug, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 24577307
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$5.16—8.95

Available in 38 shops

Add to cart

Gasket kit, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 89017729
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$14.20—19.32

Available in 37 shops

Add to cart

Gasket kit, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 89060566
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$137.82—244.69

Available in 38 shops

Add to cart

Key, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 90354648
  • Quantity in car: 48
  • Valve stem
  • Usage: ST1 (LL8), ST1 (LL8)

$1.19—4.48

Available in 39 shops

Add to cart

Retainer, engine assembly 4.2l l6 cylinder head and related parts (ll8/4.2s)

  • OEM part number: 90537243
  • Quantity in car: 24
  • Valve spring
  • Usage: ST1 (LL8)

$3.59—4.85

Available in 38 shops

Add to cart

Pinion, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 03525915
  • Quantity in car: 2
  • Engine front cover location (dowel, 5.99x17.25, cham both ends, 10.9)
  • Usage: ST1 (LL8), ST1 (LL8)

$?

Add to cart

Bolt, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 11517513
  • Quantity in car: 2
  • Hexagon flanged head m6x1x50, 18 thread, 14.2 outside diameter, 9.8, 6280m, 7mm p-point, reduced body (timing chain guide)

$3.30—3.55

Available in 2 shops

Add to cart

Bolt, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 11517521
  • Quantity in car: 5
  • Hexagon flanged head, m6x1x35, 17 thread, 14.2 outside diameter, 9.8, 6280m, machine, header-point (water pump)

$3.99—5.16

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 11517590
  • Quantity in car: 2
  • Hexagon flanged head m6x1x25, 21.5 thread, 14.2 outside diameter, 9.8, 7114m, machine, header-point (engine coolant thermostat housing)

$0.47—2.81

Available in 2 shops

Add to cart

Bolt, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 11518138
  • Quantity in car: 2
  • Hexagon flanged head, m8x1.25x30, 25.65 thread, 14 outside diameter, 9.8, 4435m, machine, header-point (timing chain tensioner)

$2.63—3.43

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 11518161
  • Quantity in car: 1
  • Hexagon flanged head with shoulder, m8x1.25x30.5, 11.45 thread, 17od, 9.8, plain, machine, 6194m, mat-point (timing chain tensioner shoe)

$2.76—2.91

Available in 2 shops

Add to cart

Bolt, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 11519038
  • Quantity in car: 2
  • Hexagon flanged head, m6x1x30, 24 thread, 13.2 outside diameter, 10.9, gmw3359, with adhesive on threads (timing chain guide)

$2.71—3.42

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 11588714
  • Quantity in car: 2
  • Hexagon flanged head, m6x1x30, 22.7 thread, 14.2 outside diameter, 8.8, gmw3359, m-pt. (water outlet)

$2.86—5.88

Available in 39 shops

Add to cart

Bolt, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 11588718
  • Quantity in car: 2
  • Timing chain guide (-hex flanged head, m6x1x50, 22.7 thread, 14.2 outside diameter, 8.8, gmw3359, mat point) (m6x1x50)
  • Usage: ST1 (LL8), ST1 (LL8)

$0.50—3.58

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 11609792
  • Quantity in car: 1
  • Crankshaft balancer (hexagon head washer, m16x2)
  • Usage: ST1 (LL8)

$7.80—10.49

Available in 38 shops

Add to cart

Seal, engine assembly 4.2l l6 cooling related, front end drive (ll8/4.2s)

  • OEM part number: 12561155
  • Quantity in car: 1
  • Engine coolant thermostat housing (O-ring)
  • Usage: ST1 (LL8)

$7.24—14.42

Available in 38 shops

Add to cart

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