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4.0 Liter (242) AMC Engine

1987–2001 Jeep Cherokee
1993–2004 Jeep Grand Cherokee
1987–1990 Jeep Wagoneer
1987–1992 Jeep Comanche
1991–2006 Jeep Wrangler

The 4.0 engine appeared in 1987 and was in production in North America until 2006, when the Jeep Wrangler TJ was replaced by the new JK. The 4.0 was discontinued at the end of the 2006. This engine has performance features suited for off-road use. The ample low end torque is ideal for trailing and rock crawling. The only downfall to the engine is the relatively low power output, especially at high rpm, for mudding applications but this can be fixed with various aftermarket options including a supercharger for the engine. Interchangeability within the late AMC/Jeep engine family is superb. The better flowing 4.0 L heads can easily be modified to fit earlier engines right along with the fuel injection system.
Click for Diagram 1

Click on images to find parts in table below


Item Image Description Years Comments Part
Number
Add To Cart
 24 Valve, Intake, Std. 1987-1998 with head marked “ 15 “, w/ 1 groove 33003515 $12.99
Valve, Intake, Std. 1998-2006 w/ 3 radius cut grooves (on stem) 53010512AA $7.99
OMIX, Valve, Intake 1997-2006   17417.15 $17.99
 25 Valve, Exhaust, Std. 1987-1999 .015 Oversize4637539 $18.99
Valve, Exhaust, Std. 1987-1999 Std. w/ 1 radius cut groove (on stem) 4637537 $7.99
Valve, Exhaust, Std. 1998-2006 w/ 3 radius cut grooves (on stem) 53010513AA $12.99
 26 Seal, Valve Stem 1987-2006 Intake 53009886 $4.99
Seal, Valve Stem Exhaust 53009887 $2.99
 27 Lock, Valve Retainer 1987-1998 w/ 1 radius cut groove (on stem) 33003521 $1.99
Lock, Value Retainer 1998-2006 w/ 3 radius cut grooves (on stem) 53010515AA $1.99
 28 Rocker Arm 1987-2006 3242393 $4.99
Rocker Arm Kit 1983-2004 3242393K $52.99
 29 Pivot, Rocker Arm 1987-2006 3235090 $1.99
 30 Bridge, Rocker Arm Pivot 1987-2006 MRM1718 $3.99
 31 Pivot Kit 1987-2006 contains 2 pivots & 1 bridge 3236513K $3.99
 32 Bolt, Rocker Arm Pivot 1987-2006 9425708 $1.99
 33 Spring, Valve 1996-2006 53010388 $9.99
 34 Tappet (Lifter) 1987-2001 4740269 $6.99
MOPAR Lifter 1984-2006 4.0L 53010574AB-M $25.99
 35 Push Rod 1987-2006 33002986 $2.99
 #36 Timing Cover 1993-2001 53020222 $39.99
Timing Cover 1987-1992 With Molded Oil Pan Gasket4720223 $59.99
 37 Gasket & Seal Kit, Timing 1987-1991 8129097 $6.99
 38 Seal, Crankshaft Front 1972-2006 Front Main Seal 3224704 $2.99
 39 Gasket, Timing Cover 1987-2006 53020487 $2.99
 40 Guide, Timing Chain 1987-2006 33003446 $3.99
 41 Chain, Timing 1987-1993 Sprocket tooth thickness = .28" 33002977 $14.99
Chain, Timing 1994-2006 Sprocket tooth thickness = .40" 53020444 $26.99
 42 Sprocket, Camshaft 1987-1993 Sprocket tooth thickness = .28" 33002978 $26.99
Sprocket, Camshaft 1994-1998 Sprocket tooth thickness = .40" 53020445 $19.99
Sprocket, Camshaft 1999-2006 53010557AA $82.99
 43 Sprocket, Crankshaft 1987-1993 Sprocket tooth thickness = .28" 33002979 $20.99
Sprocket, Crankshaft 1994-2006 Sprocket tooth thickness = .40" 53020443 $19.99
 44 Vibration Damper - Harmonic Balancer 1987-2004 33002920 $39.99
Vibration Damper - Harmonic Balancer and Seal Kit 1987-2004 33002920K $59.99
 45 Slinger, Oil 1987-2000 3173076 $1.99
 46 Bearing, Crankshaft Pilot 1987-1991 33004041 $7.99
Bearing, Crankshaft Pilot 1992-1999 53009181 $15.99
 47 Ring Gear, Flywheel 1987-1993 w/ Manual Transmission 3179741 $21.99
 48 Flywheel Assembly 97/04 TJ, 91-95 YJ, 91-01 XJ, 93-96 ZJ53020519AB $124.99
Flywheel Assembly 1987-1990 XJ 33002672 $129.99
 49 Seal Kit, Crankshaft Rear 1987-1999 Rear Main Seal 4778126 $9.99
Seal Kit, Crankshaft Rear 2000-2005 5018594AA $9.99
 50 Manifold, Exhaust 1987-1990 53006244 $189.99
Manifold, Exhaust 1991-1999 Includes Flex Bellows 4883385 $149.99
Manifold, Exhaust 1993-1999 w/ Gasket4883385K $154.99
Manifold, Exhaust 2000-2006 Cast Iron- Front ( WJ 1999-2004) 53010196 $199.99
Manifold, Exhaust 2000-2006 Cast Iron- Rear ( WJ 1999-2004) 53010199 $199.99
 51 Gasket, Manifold 1987-1990 4713263 $14.99
Gasket, Manifold 1991-1999 w/ Tubular 1 pc. Manifold 53010238 $14.99
Gasket, Manifold 2000-2006 w/ Cast Iron Split Manifold ( WJ 1999-2004) 4854038 $24.99
 52 Mount, Front 1987-1999 XJ & YJ52040267 $14.99
Mount, Front 1993-1996 XJ RHD Right 52020018 $39.99
Mount, Front 2000-2001 XJ52019201AC $55.99
Mount, Front 1997-2006 TJ Left & Right 52019278 $24.99
Mount, Front 1993-1998 ZJ Right 52018280 $29.99
Mount, Front 1993-1998 ZJ Left 52018281 $39.99
Mount, Front 1999-2004 WJ Right 52058928 $56.97
Mount, Front 1999-2004 WJ Left 52058929 $64.99
 53 Mount, Rear (transmission) 1991-1995 YJ52002625 $19.99
Mount, Rear (transmission) 1987-2001 XJ52002334 $22.99
Mount, Rear (transmission) 2000-2001 XJ52059347AB $46.99
Mount, Rear (transmission) 1997-2006 TJ52058551AB $28.99
 54 Insulator, Support Bracket 1987-1995 XJ 53000101 $2.99
 55 Cushion Assembly 1987-1990 w/ Peugeot BA10/5 Transmission 83505567 $74.99
 56 Bracket Assembly, Rear 1993-1996 ZJ- w/ Manual Transmission52018096 $29.99
 57 Support, Transmission 1997-1998 52058485 $38.99
Support, Transmission 1999-2004 WJ 2WD only 52058995 $42.99
Support, Transmission 1999-2004 WJ 4WD only 52058994 $44.99
 58 Mount Kit 1987-1995 YJ only 52019201K $39.99
Engine Mount Kit 87/89 4.0L w/Peugeot Transmission52019201K-P $79.99
 58a Engine Mount, 6 Cyl 4.0 L 1987-2006 RED- PAIR1-502 $159.99
Engine Mount, 6 Cyl 4.0 L 1987-2006 BLACK- PAIR1-502BL $163.99

Years Covered: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006

Click for Diagram 1
 
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