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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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Housing, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12581714
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$29.27—63.94

Available in 37 shops

Add to cart

Seal, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12581717
  • Quantity in car: 1
  • Crankshaft rear oil
  • Usage: ST1 (LL8)

$19.82—35.25

Available in 37 shops

Add to cart

Pinion, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12585420
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$2.82—34.74

Available in 39 shops

Add to cart

Piston, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12585784
  • Quantity in car: 6
  • Usage: ST1 (LL8)

$73.66—130.43

Available in 38 shops

Add to cart

Heater, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12586687
  • Quantity in car: 1
  • Engine coolant (with 2-pinion and silver colored)
  • Usage: ST1 (LL8, K05), ST1 (LL8, K05)

$28.49—33.37

Available in 38 shops

Add to cart

Sensor, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12597254
  • Quantity in car: 1
  • Crankshaft position
  • Usage: ST1 (LL8)

$15.96—31.87

Available in 37 shops

Add to cart

Valve, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12597567
  • Quantity in car: 1
  • Evaporative emission canister purge solenoid (valve only) (use together with 12579283 bracket)
  • Usage: ST1 (LL8), ST1 (LH6, LL8, LS2)

$24.23—114.80

Available in 39 shops

Add to cart

Fitting, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12598077
  • Quantity in car: 1
  • Heater inlet hose
  • Usage: ST1 (LL8), ST1 (LL8)

$11.89—13.00

Available in 2 shops

Add to cart

Cover, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12601932
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$0.53

Available in 1 shop

Add to cart

Cover, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12601932
  • Quantity in car: 1
  • Engine front (with oil pmp) (includes seal (front cover), gears, plug and relief valve) (no gasket used, use room temperature vulcanizing 12378521) (second design cover for use with flat seal at oil pump pick-up
  • Usage: ST1 (LL8)

$0.53

Available in 1 shop

Add to cart

Switch, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12611588
  • Quantity in car: 1
  • Engine oil pressure
  • Usage: ST1 (LL8)

$2.72

Available in 1 shop

Add to cart

Rod, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12613195
  • Quantity in car: 6
  • Connect (machining with cap)
  • Usage: ST1 (LL8)

$41.73—73.84

Available in 38 shops

Add to cart

12621694 genuine OEM part.

Plate, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12621694
  • Quantity in car: 1
  • Automatic transmission flexible (for use with 258 millimeter torque converters. use together with bolt 11570716 quantity 08)
  • Usage: ST1 (LL8, M30), ST1 (LL8)

$52.90—96.42

Available in 38 shops

Add to cart

Sensor, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 12623730
  • Quantity in car: 2
  • Knock
  • Usage: ST1 (LL8), ST1 (LL8)

$9.27—18.87

Available in 37 shops

Add to cart

Sprocket, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 24100061
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$55.50—100.04

Available in 38 shops

Add to cart

Sensor, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 24100388
  • Quantity in car: 2
  • Knock
  • Usage: ST1 (LL8), ST1 (LL8)

$22.45—26.79

Available in 38 shops

Add to cart

Stiffener, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 24577092
  • Quantity in car: 1
  • Crankshaft bearing cap
  • Usage: ST1 (LL8), ST1 (LL8)

$40.60—67.49

Available in 38 shops

Add to cart

Bracket, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 24577194
  • Quantity in car: 1
  • Evaporative emission canister purge solenoid valve
  • Usage: ST1 (LL8), ST1 (LL8)

$3.80—3.97

Available in 2 shops

Add to cart

Crankshaft, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 88958866
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$610.41—683.46

Available in 38 shops

Add to cart

Sleeve, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 88984239
  • Quantity in car: 6
  • Cylinder (machining)
  • Usage: ST1 (LL8)

$109.36—122.46

Available in 38 shops

Add to cart

Seal kit, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89017621
  • Quantity in car: 1
  • Crankshaft front oil (smooth hub.for second design see 89017622)
  • Usage: ST1 (LL8) (1ST DES)

$14.26—16.04

Available in 38 shops

Add to cart

Seal kit, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89017621
  • Quantity in car: 1
  • Crankshaft front oil (for use with original 2002-03 crankshaft-smooth hub balancer;2nd design (12578069)-balancer has a step-on the hub use with 12574668 seal)
  • Usage: ST1 (LL8)

$14.26—16.04

Available in 38 shops

Add to cart

Seal kit, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89017622
  • Quantity in car: 1
  • Crankshaft front oil (balancers have a step on the hub for retainment of friction washer.1st design 89017621)
  • Usage: ST1 (LL8) (2ND DES)

$8.59—13.74

Available in 38 shops

Add to cart

Seal kit, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89017622
  • Quantity in car: 1
  • Crankshaft front oil (balancers have a step on the hub for retainment of friction washer)
  • Usage: ST1 (LL8)

$8.59—13.74

Available in 38 shops

Add to cart

Piston kit, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89017790
  • Quantity in car: 6
  • Usage: ST1 (LL8)

$28.73—31.92

Available in 38 shops

Add to cart

Bearing kit, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89017791
  • Quantity in car: 6
  • Usage: ST1 (LL8), ST1 (LL8)

$12.16—14.36

Available in 38 shops

Add to cart

Crankshaft, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89017797
  • Quantity in car: 1
  • (machining)
  • Usage: ST1 (LL8)

$384.34—449.28

Available in 38 shops

Add to cart

Ring kit, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89060378
  • Quantity in car: 6
  • Piston (standard) (note lower compression ring is 1.5mm thick with scaper groove)
  • Usage: ST1 (LL8)

$20.11—24.59

Available in 38 shops

Add to cart

Bearing kit, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89060394
  • Quantity in car: 6
  • Crankshaft (#1, 2, 3, 4, 6, 7) (standard)
  • Usage: ST1 (LL8)

$24.50—28.93

Available in 38 shops

Add to cart

Crankshaft, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89060573
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$365.93—657.27

Available in 38 shops

Add to cart

Bearing kit, engine assembly 4.2l l6 block and internal parts (ll8/4.2s)

  • OEM part number: 89065021
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$28.86

Available in 1 shop

Add to cart

Retainer, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11503736
  • Quantity in car: 1

$0.28

Available in 1 shop

Add to cart

Nut, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11514596
  • Quantity in car: 2
  • Hex flanged head, m8x1.25, 17.9 outside diameter, 738 thick, 13mm hexagon, 10, zf (oil pan)

$0.17—8.53

Available in 3 shops

Add to cart

Bolt, hex flanged head, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11517692
  • Quantity in car: 1
  • M6x1x25, 21.5 thread, 14.2 outside diameter, 9.8, 6280m, machine, 6124m, header-point

$2.57—2.77

Available in 38 shops

Add to cart

Stud, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11517903
  • Quantity in car: 2
  • Straight, m8x1.25x27.5, m8x1.25x27.5, 58.5 tl, 9.8, 7114m, machine (left-hand position #5, right-hand position #1)

$2.76—3.17

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11562426
  • Quantity in car: 1

$4.18—5.17

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11562426
  • Quantity in car: 2

$4.18—5.17

Available in 38 shops

Add to cart

Plug, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11562588
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$2.09—8.55

Available in 39 shops

Add to cart

Bolt, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11588364
  • Quantity in car: 20
  • Hex flanged head, m8x1.25x34, 25 thread, 18 outside diameter, 9.8, gmw3359 (oil pan)

$2.63—2.77

Available in 2 shops

Add to cart

Bolt, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11588714
  • Quantity in car: 11
  • Hex flanged head, m6x1x30, 22.7 thread, 14.2 outside diameter, 8.8, gmw3359, m-pt. (engine front cover)

$2.86—5.88

Available in 39 shops

Add to cart

Bolt, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

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

$0.50—3.58

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11588719
  • Quantity in car: 2
  • Hex flanged head, m6x1x60, 18mm thread, 14.2 outside diameter, 8.8, 3359gmw (oil pan)

$2.59—3.43

Available in 38 shops

Add to cart

Stud, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 11609473
  • Quantity in car: 1
  • Hex flanged head, 6x1x25, 6x1x16, 14.2 outside diameter, 47.6 tl, 9.8, 6280m, header-pts (oil level indicator tube)

$3.16—5.94

Available in 38 shops

Add to cart

Sealant, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12378521
  • Room temperature vulcanizing engine silicone 5.3oz cart (oil pan)

$11.80—50.15

Available in 39 shops

Add to cart

Seal, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12557752
  • Quantity in car: 1
  • Oil pump suction pipe (blue) (with 0-ring seal part of pick up tube.for second design see 12575550)
  • Usage: ST1 (LL8) (1ST DES)

$3.91—4.93

Available in 38 shops

Add to cart

Plug, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12565092
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$2.76—3.04

Available in 2 shops

Add to cart

Screen, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12570894
  • Quantity in car: 1
  • Oil pump (with suction pipe) (with -o-ring seal part of pick up tube.for second design see 12589061)
  • Usage: ST1 (LL8) (1ST DES)

$2.77

Available in 1 shop

Add to cart

Seal, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12575550
  • Quantity in car: 1
  • Oil pump suction pipe (has flat gasket seal.for first design see 12557752)
  • Usage: ST1 (LL8) (2ND DES)

$8.77—15.53

Available in 38 shops

Add to cart

Seal, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12575550
  • Quantity in car: 1
  • Oil pump suction pipe
  • Usage: ST1 (LL8)

$8.77—15.53

Available in 38 shops

Add to cart

Indicator, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12580810
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$11.02—24.53

Available in 38 shops

Add to cart

Pan, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12584321
  • Quantity in car: 1
  • Oil (new pan less baffles, gasket, which are not required)
  • Usage: ST1 (LL8), ST1 (LL8)

$182.01—309.66

Available in 38 shops

Add to cart

Screen, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12589061
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$49.09—98.08

Available in 38 shops

Add to cart

Screen, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12589061
  • Quantity in car: 1
  • Oil pump (with suction pipe) (has flat gasket seal.for first design see 12570894)
  • Usage: ST1 (LL8) (2ND DES)

$49.09—98.08

Available in 38 shops

Add to cart

Tube, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12590589
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$11.96—57.69

Available in 38 shops

Add to cart

Cover, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12601932
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$0.53

Available in 1 shop

Add to cart

Switch, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12611588
  • Quantity in car: 1
  • Engine oil pressure
  • Usage: ST1 (LL8)

$2.72

Available in 1 shop

Add to cart

Seal, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 12616850
  • Quantity in car: 1
  • Oil pan drain plug (O-ring)
  • Usage: ST1 (LL8)

$2.43—7.40

Available in 39 shops

Add to cart

Spring, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 24100119
  • Quantity in car: 1
  • Oil pressure relief valve
  • Usage: ST1 (LL8), ST1 (LL8)

$5.23—5.85

Available in 2 shops

Add to cart

Seal, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 24504031
  • Quantity in car: 1
  • Oil level indicator (O-ring) (reduction)
  • Usage: ST1 (LL8)

$7.30—8.38

Available in 38 shops

Add to cart

Seal, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 24504031
  • Quantity in car: 1
  • Oil level indicator tube (O-ring) (reduction)
  • Usage: ST1 (LL8)

$7.30—8.38

Available in 38 shops

Add to cart

Fitting, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 24575062
  • Quantity in car: 1
  • Oil filter
  • Usage: ST1 (LL8), ST1 (LL8)

$5.23—10.08

Available in 38 shops

Add to cart

Seal, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 24576940
  • Quantity in car: 1
  • Engine front cover
  • Usage: ST1 (LL8), ST1 (LL8)

$12.60—16.67

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 24577281
  • Quantity in car: 7
  • Oil pump (m6x1.0x23 thd.matl:gm500m (9.8)steel.finish:per gm4435m, code g.) (m6x1.0x22)
  • Usage: ST1 (LL8), ST1 (LL8)

$3.61—4.23

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 24577504
  • Quantity in car: 1
  • Engine front cover (m5x0.8-6g) (center)
  • Usage: ST1 (LL8)

$2.76—4.82

Available in 38 shops

Add to cart

Bolt, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 24577504
  • Quantity in car: 1
  • Engine front cover (m5x0.8-6g)
  • Usage: ST1 (LL8)

$2.76—4.82

Available in 38 shops

Add to cart

Valve, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 25014006
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$2.95—3.80

Available in 38 shops

Add to cart

Valve, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 25014612
  • Quantity in car: 1
  • Oil filter bypass (without vapor separator) (opening pressure 21 psi nominal) (part has a 16.10mm maximum outside diameter & fits a 15.84 hole in block)
  • Usage: ST1 (LL8), ST1 (LL8)

$2.98—3.76

Available in 38 shops

Add to cart

Filter, engine assembly 4.2l l6 oil pump, pan and related parts (ll8/4.2s)

  • OEM part number: 89017342
  • Quantity in car: 1
  • Oil
  • Usage: ST1 (LL8), ST1 (LL8)

$4.71—4.91

Available in 2 shops

Add to cart

Bolt, pulleys and belts accessory drive (ll8/4.2s)

  • OEM part number: 11515767
  • Quantity in car: 1
  • Hex flanged head, m10x1.5x35, 32thd, 22.3 outside diameter, machine, 10.9, 7114m (belt idler pulley bracket) (together with 12345493)

$0.55—0.75

Available in 38 shops

Add to cart

Bolt, pulleys and belts accessory drive (ll8/4.2s)

  • OEM part number: 11516356
  • Quantity in car: 1
  • Hexagon flanged head, reduced body, m10x1.5x70, 30thd, 22.3 outside diameter, 9.8, 7114m (drive belt tensioner)

$2.66—3.61

Available in 38 shops

Add to cart

Bolt, pulleys and belts accessory drive (ll8/4.2s)

  • OEM part number: 11518636
  • Quantity in car: 2
  • Hex flanged head, m10x1.5x90, 25.9 thread, 22.3 outside diameter, 10.9, gmw3359, 7.5 mat-point (belt idler pulley bracket)

$2.63—2.77

Available in 2 shops

Add to cart

Tensioner, pulleys and belts accessory drive (ll8/4.2s)

  • OEM part number: 12573024
  • Quantity in car: 1
  • Drive belt
  • Usage: ST1 (LL8), ST1 (LL8)

$63.38—110.89

Available in 38 shops

Add to cart

Belt, pulleys and belts accessory drive (ll8/4.2s)

  • OEM part number: 12575215
  • Quantity in car: 1
  • Water pump & air conditioning compressor & gen. & power steering pump (2290mm)
  • Usage: ST158 (LL8), ST158 (LL8)

$31.05—67.86

Available in 2 shops

Add to cart

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