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.

The Jeep 4.0L inline 6 is known for its durability, torque, and long service life, making it one of the most trusted engines for both daily driving and off-road use.

This rebuild kit supports stock engine configurations and provides the components needed for a complete and dependable 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 Master Rebuild Kit

This master rebuild kit includes the essential components needed for a complete engine rebuild.

• Pistons & Rings
• Main & Rod Bearings
• Cam Bearings
• Full Gasket Set
• Camshaft & 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

Need machining services? Visit our engine machine shop services for boring, resurfacing, and balancing.

Engine Fitment & Notes

Proper fitment is important when selecting Jeep inline 6 engine rebuild components.

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

Note: Engine variations may exist by year and application. Always confirm engine specifications before ordering.

Why Choose This Jeep 4.0 Master Rebuild Kit?

This kit provides a complete solution for rebuilding one of Jeep’s most reliable inline 6 engines with precision-fit components.

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

Looking for an earlier Jeep engine? View our AMC Jeep 258 rebuild kit.

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 at 1-800-847-0733 for expert assistance.