Description

Jeep 4.0 Master Rebuild Kit – 242 Inline 6

Restore performance and reliability with this Jeep 4.0 master rebuild kit, designed for 242ci inline 6 engines used in Jeep truck and SUV applications. This engine is known for its durability, strong torque output, and long service life.

The Jeep 4.0L inline 6 is widely recognized as one of the most dependable Jeep engines ever produced, commonly used in Wrangler, Cherokee, and Grand Cherokee models.

This rebuild kit supports stock engine configurations and provides the components needed for a complete engine rebuild.

Browse additional options on our engine rebuild kits hub page to find the right kit for your build.

What’s Included in This Jeep 4.0 Rebuild Kit

• Piston Set
• Piston Ring Set
• Rod Bearing Set
• Main Bearing Set
• Cam Bearing Set
• Full Gasket Set
• Camshaft
• Valve Lifters
• Timing Set
• Oil Pump
• Expansion Plug Kit

Available Sizes & Options

This kit is available in multiple size configurations to match your engine machining specifications.

Pistons & Ring Sizes (Oversize)

• Standard (STD)
• .020 Oversize
• .030 Oversize
• .040 Oversize
• .060 Oversize

Rod Bearing Sizes (Undersize)

• Standard (STD)
• .010 Undersize
• .020 Undersize
• .030 Undersize

Main Bearing Sizes (Undersize)

• Standard (STD)
• .010 Undersize
• .020 Undersize
• .030 Undersize

Engine Fitment & Notes

• Engine: Jeep 4.0L / 242 Inline 6
• Configuration: Inline 6-cylinder
• Application: Truck / SUV
• Common Vehicles: Wrangler, Cherokee, Grand Cherokee

Why Choose This Kit?

This Jeep 4.0 rebuild kit provides a complete solution for restoring one of Jeep’s most trusted engines, designed for long-term durability and dependable performance.

• ✔ Complete master kit solution
• ✔ Designed for Jeep 4.0L engines
• ✔ Known for durability and reliability
• ✔ Precision-fit components

Not sure which sizes you need? Review our engine rebuild kit guide
or learn more about proper measurements in our bearing clearance guide.

Need help selecting sizes or confirming fitment? Contact Benning Auto Parts @ 1-800-847-0733 for expert assistance.

Related Engine Rebuild Kits

Explore additional Jeep engine rebuild kits across multiple generations and configurations:

• Jeep 4.2L 258 Inline 6 Rebuild Kits (Predecessor Engine)
• Jeep 232 Inline 6 Rebuild Kits (Earlier Generation)
• Jeep 3.8L V6 Rebuild Kits (Newer Wrangler Engines)
• Jeep 2.5L Inline 4 Rebuild Kits (Smaller Engine Option)