4.2L 6-Cyl. Engine Parts for Jeep Wrangler YJ (1987–1990)

4.2L 6-Cylinder Engine Parts for Jeep Wrangler YJ (1987–1990)

Keep the torque monster alive. We provide specialized engine parts for the classic 4.2L (258 Cui) AMC engine of your early Wrangler YJ.
  • Engine Rebuild: High-quality pistons and bearings from Sealed Power and Enginetech.
  • Gasket Solutions: Full sets for cylinder heads and valvetrains from Crown.
  • Maintenance: Oil pumps, freeze plugs, and timing components from Dorman and Crown.
Jeep Wrangler YJ 87-95 4,2 Liter 6-Cylinder Engine Parts

Camshaft 4,2 L 6-Cyl. Jeep CJ Wrangler 81-90
SOLD OUT
Only fit for 4,2 L 6-cylinder Engine
239,00 EUR
incl. 19% tax excl. Shipping costs
Camshaft Bearing Set Oversize .010
Camshaft Bearing Set with Oversize .010"
49,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Camshaft Bearing Set Standard Size 4 + 6 Cyl. Jeep CJ + Wrangler + Cherokee + Grand Cherokee 66-06
Camshaft Bearing Set with Standard Size
49,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Connecting rod bearing shells Complete Set .020
SOLD OUT
Connecting rod bearing shells made of high-quality metal, manufactured with a coated bronze alloy.
69,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Connecting rod bearing shell Complete Set .030
Connecting rod bearing shells made of high-quality metal, manufactured with a coated bronze alloy.
69,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Connecting Rod Bearing Set .010" Over Size 3,8 + 4,0 + 4,2 L Jeep CJ + Wrangler + Cherokee + Grand Cherokee 72-04
Connecting Rod Bearing Set with 12 .010" Over Size Bearing Shells
59,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Connecting Rod Bearing Set Standard 3,8 + 4,0 + 4,2 L Jeep CJ + Wrangler + Cherokee + Grand Cherokee 72-04
Connecting Rod Bearing Set with 12 Standard Size Bearing Shells
59,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Connecting Rod Bolt 4 + 6 + 8 Cyl. Jeep 71-06
1 Connecting Rod Bolt
7,90 EUR
incl. 19% tax excl. Shipping costs
Crankshaft Harmonic Balancer 2,5 + 4,2 L Jeep CJ + Wrangler + Cherokee 81-93
Only fit with Serpentine Drive Belt
99,00 EUR
incl. 19% tax excl. Shipping costs
Crankshaft Harmonic Balancer 4,2 L Jeep CJ + Wrangler 75-90
Only fit with Serpentine V-Belt
129,00 EUR
incl. 19% tax excl. Shipping costs
Crankshaft Oil Seal Rear CJ + Wrangler + Cherokee + Grand Cherokee 3,8 + 4,2 + 4,0 L 72-06
Rear crankshaft seal, engine output to the transmission
23,90 EUR
incl. 19% tax excl. Shipping costs
Cylinder Head Gasket Jeep CJ + Wrangler 3,8 + 4,2 L 65-90
Only fit for 3,8 + 4,2 L 6 Cyl. Engine
22,90 EUR
incl. 19% tax excl. Shipping costs
Engine Gasket Set Complete Jeep CJ Wrangler 4,2 L 81-90
Only fit for 4,2 L 258 cui 6 Cyl. Engine
139,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Engine Gasket Set Lower Jeep CJ + Wrangler + Cherokee 3,8 + 4,2 + 4,0 L 75-91
Lower Engine Gasket Set
47,90 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Engine Gasket Set Upper Jeep CJ Wrangler 4,2 L 81-90
Only fit for 4,2 L 258 cui 6 Cyl. Engine
79,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Exhaust Converter Gasket Jeep CJ Wrangler Cherokee 75-91
Exhaust Head Pipe to Converter Flange Gasket
8,90 EUR
incl. 19% tax excl. Shipping costs
Exhaust Manifold Gasket Kit Jeep CJ Wrangler 3,8 + 4,2 L 66-90
Exhaust and Intake Manifold Gasket Kit 3,8 + 4,2 L 6 Cyl.
39,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Exhaust Manifold Set 4,2 L 6 Cyl CJ + Wrangler YJ 81-90
Exhaust Manifold Set with Gaskets
279,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Exhaust Valve Oversize .015" 4,2 + 5,0 L Jeep CJ + Wrangler 81-90
Oversize Exhaust Valve .015"
27,90 EUR
incl. 19% tax excl. Shipping costs
Exhaust Valve Seat 6 +8 Cyl. Jeep CJ + Wrangler 72-90
Only fit for 3,8 + 4,2 + 5,0 L 6 + 8 Cylinder Engine
6,90 EUR
incl. 19% tax excl. Shipping costs
Flywheel Ring Gear 6 + 8 Cyl. Jeep CJ + Wrangler + Cherokee 71-06
Flywheel Ring Gear with 164
39,00 EUR
incl. 19% tax excl. Shipping costs
Fuel Pump Gasket Jeep CJ + Willys + Wrangler 41-90
4,90 EUR
incl. 19% tax excl. Shipping costs
Flywheel & Ring Gear 4.0L 4.2L BA10/5 AX15 Transmission Jeep Cherokee XJ / Wrangler YJ (87-89).
Flywheel and Ring Gear for 4.0L and 4.2L Engines with BA10/5 or AX15 Transmission.
139,00 EUR
incl. 19% tax excl. Shipping costs
Hot Air Duct Pre Heater Hose 2,5 + 3,8 + 4,2 + 5,0 L Jeep CJ + Wrangler + Cherokee 74-92
Preheater hose from the exhaust manifold to the air cleaner
16,90 EUR
incl. 19% tax excl. Shipping costs
Hot Air Duct Pre Heater Hose 2,5 + 3,8 + 4,2 + 5,0 L Jeep CJ + Wrangler + Cherokee 74-92
Preheater hose from the exhaust manifold to the air cleaner
11,00 EUR
incl. 19% tax excl. Shipping costs
Hydraulic Lifter 2.5L, 3.8L, 4.0L, 4.2L, 5.0L & 5.9L. Jeep CJ5 CJ6 CJ7 CJ8 Cherokee XJ Wrangler YJ TJ Grand Cherokee ZJ ZG WJ WG Comanche MJ (1972-2006).
2 pcs. required per cylinder.
7,90 EUR
incl. 19% tax excl. Shipping costs
Intake Valve Oversize .015" 4,2 + 5,0 L Jeep CJ + Wrangler 81-90
Oversize Intake Valve .015"
39,00 EUR
incl. 19% tax excl. Shipping costs
Intake Valve Seat 6 +8 Cyl. Jeep CJ + Wrangler 72-90
Only fit for 3,8 + 4,2 + 5,0 L 6 + 8 Cylinder Engine
6,90 EUR
incl. 19% tax excl. Shipping costs
Intake Valve Standard Size 4,2 + 5,0 L Jeep CJ + Wrangler 81-90
Standard Size Intake Valve
32,00 EUR
incl. 19% tax excl. Shipping costs
Main Bearing Set Oversize 0.010" 6 Cyl. Jeep CJ + Wrangler + Cherokee 70-90
Only fit for 3,8 + 4,0 + 4,2 L 6-Cylinder Engine
89,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Main Bearing Set Oversize 0.020" 6 Cyl. Jeep CJ + Wrangler + Cherokee 70-90
SOLD OUT
Only fit for 3,8 + 4,0 + 4,2 L 6-Cylinder Engine
89,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Main Bearing Set Standard Size 6 Cyl. Jeep CJ + Wrangler + Cherokee 70-90
Only fit for 3,8 + 4,0 + 4,2 L 6-Cylinder Engine
89,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Oil Pan Engine 4,2 L 6 Cyl. Jeep CJ + Wrangler 76-90
Only fit for 4,2 L 6-cylinder Engine
249,00 EUR
incl. 19% tax excl. Shipping costs
Oil Pan Engine incl. Gasket 4,2 L 6 Cyl. Jeep CJ + Wrangler 76-90
Only fit for 4,2 L 6-cylinder Engine
279,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Oil Pan Gasket Jeep CJ + Wrangler + Cherokee + Grand Cherokee 3,8 + 4,2 + 4,0 L 72-06
Oil Pan Gasket in one piece silicone
60,90 EUR
incl. 19% tax excl. Shipping costs
Oil Pan Gasket Set Jeep CJ + Wrangler + Cherokee 3,8 + 4,2 + 4,0 L 66-91
Oil Pan Gasket in Cork
24,90 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Oil Pump Gasket Jeep CJ + Wrangler + Cherokee + Grand Cherokee 2,5 + 4,2 + 4,0 L 81-06
Oil Pump Gasket 4 + 6 Cyl. Engine
2,90 EUR
incl. 19% tax excl. Shipping costs
PCV Valve 4,2 L 6 Zyl. Jeep CJ + Wrangler 83-90
Pressure Control Valve on the valve cover
6,90 EUR
incl. 19% tax excl. Shipping costs
Piston Set .030" Oversize 4,2 L Jeep CJ + Wrangler 79-90
Engine piston set incl. pin, .030" Oversize
279,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Piston Set .060" Oversize 4,2 L Jeep CJ + Wrangler 79-90
Engine piston set incl. pin, .060" Oversize
279,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Piston Set Standard Size 4,2 L Jeep CJ + Wrangler 79-90
SOLD OUT
Engine piston set incl. pin, Standard Size
279,00 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Rocker Arm Pivot Set Jeep CJ + Wrangler + Cherokee + Grand Cherokee 80-06
Rocker Arm Pivot Set 2,5 + 4,2 + 4,0 + 5,0 + 5,9 L
9,90 EUR
incl. 19% tax excl. Shipping costs
Set:
 
RTV universal Silicone Sealant tube packaged in a blister.
RTV = ​​Room temperature vulcanizing adhesive for sealing or fixing leaks.
12,90 EUR
161,25 EUR per l
incl. 19% tax excl. Shipping costs
Thermostat Housing Gasket Jeep 2,5 + 4,0 + 4,2 + 5,0 L Engine 72-06
Thermostat housing gasket
3,90 EUR
incl. 19% tax excl. Shipping costs
Timing Chain Guide 4 + 6 Cyl. Jeep CJ + Wrangler + Cherokee + Grand Cherokee 72-06
Guide for the Timing Chain for al 2,5 + 4,2 + 4,0 L 4 / 6-cylinder AMC Engine
12,90 EUR
incl. 19% tax excl. Shipping costs
Timing Cover 4 + 6 Cyl. Jeep CJ + Wrangler Cherokee 72-93
Timing Cover Aluminum 2,5 + 4,0 + 4,2 L
89,00 EUR
incl. 19% tax excl. Shipping costs
Timing Cover Gasket Jeep CJ + Wrangler + Cherokee  4 + 6 Cyl 66-91
Only fit for 2,5 + 3,8 + 4,2 + 4,0 L Engine
8,00 EUR
incl. 19% tax excl. Shipping costs
Timing Cover Gasket Set Jeep CJ + Wrangler + Cherokee  4 + 6 Cyl 66-91
Oil pan to timing cover gasket + Timing chain housing gasket + Front crankshaft seal
12,90 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Transmission Insulator Stud Dana 300 Transfer Case Jeep CJ Wrangler YJ 76-86, Close-Up.
SOLD OUT
Transmission Stabilizer Insulator Stud for Dana 300 Transfer Case.
8,90 EUR
incl. 19% tax excl. Shipping costs
Valve Cover Gasket Aluminum Cover Jeep CJ + Wrangler 4,2 L 81-86
Only fit for Aluminum-Valve Cover
17,90 EUR
incl. 19% tax excl. Shipping costs
Valve Cover Gasket Plastic Cover Jeep CJ + Wrangler 4,2 L 81-87
Rubber Gasket fit for Plastic-Valve Cover
34,90 EUR
incl. 19% tax excl. Shipping costs
Valve Cover Gasket Plastic Cover Jeep CJ + Wrangler 4,2 L 81-87
Only fit for Plastic-Valve Cover
17,90 EUR
incl. 19% tax excl. Shipping costs
Valve Cover Set Aluminum 4,2 L 6 Zyl. Jeep CJ + Wrangler 81-86
Plastic Valve Cover incl. Grommets and new Hardware
234,90 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Valve Seal 3,8 + 4,2 + 5,0 L Jeep CJ + Wrangler 72-91
Valve Seal for Standard Intake Valve
3,90 EUR
incl. 19% tax excl. Shipping costs
Water Pump Gasket Jeep CJ + Wrangler + Cherokee 4 + 6 Cyl. 66-99
3,90 EUR
incl. 19% tax excl. Shipping costs
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Preserving a Classic: Jeep Wrangler YJ 4.2L Engine Components

The 4.2L AMC inline-six is the heart of the early Wrangler YJ generation. Renowned for its ruggedness and low-end torque, this 258 Cui engine deserves only the highest quality components during an overhaul. We stock everything you need to keep your vintage powerplant running for decades to come.

Trusted Reliability: Sealed Power, Enginetech & Crown

For the mechanical restoration of your 4.2L engine, we rely on established names. Sealed Power pistons and rings ensure optimal compression, while Enginetech bearings provide smooth crankshaft operation. To keep your classic engine leak-free, we offer precision gasket kits from Crown Automotive. Our inventory is completed by reliable oil pumps and valvetrain parts from Dorman, specifically engineered for the 1987-1990 model years.

Expert Support for Your 4.2L Project

We understand that parts for the 4.2L engine can be highly specific. Our outstanding customer service provides the technical expertise you need for a successful order. With our fast shipping, your engine parts will arrive quickly, helping you get your classic Jeep Wrangler YJ 4.2L back where it belongs – on the road or the trail.