Finance Your Engine or Transmission With Monthly Payments Via Affirm
Finance Your Engine or Transmission With Monthly Payments Via Affirm

JEEP 4.0L Engine

JEEP 4.0 Liter Engine 1991-2007

Remanufactured Zero Mile Gas Engines


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Fraser Engine Rebuilders, Inc.

Warranty Labor Upgrades Available from Fraser Engines

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4.0L Jeep Engine (1991-2007)
  • Standard Option
  • Fraser Advantage


Part No. FEJ40S


Remanufactured back to factory spec with aftermarket parts.

For our strongest available engine remanufactured using the highest quality parts, view our Fraser Advantage option.


Warranty: 3 Year / Unlimited Miles, Parts Only

Shipping: To Be Determined / Call for Rates

Core Deposit: Call for Details


UNIT COST: $2199.00



WARRANTY – No-Fault Warranty Upgrade – Call


Part No. FEJ40R-HD


Remanufactured, High Durability Crate Engine.

Fraser’s Strongest Available Engine!

All OEM Updates & Upgrades Included. Zero Miles.


Warranty: 5 Year / Unlimited Miles, Parts & Labor

Shipping: To Be Determined / Call for Rates

Core Deposit: Call for Details


UNIT COST: $2699.00



TINWARE – Oil Pan, Timing Cover, Oil Sump – Add+$349

WARRANTY – No-Fault Warranty Upgrade – Call

Part Type:  Remanufactured Engine Assembly (Factory Spec)

This remanufactured JEEP 4.0L engine includes the following enhancements from Fraser Engines:

  • Bore and hone all cylinders to OEM clearances (We check all clearances within .0001 of inch),
  • Decking cylinder head(s) and block for straightness,
  • Cutting valve seats and valves to proper degree,
  • Line boring/honing crankshaft/camshaft tunnels,
  • Ground & polish crankshaft, new or remanufactured camshaft(s),
  • New main bearings, rod bearings, pistons, piston rings, lifters, pushrods (if equipped), timing components, oil pump, head bolts,
  • All new internal gaskets and seals.
  • All finishing gaskets are included (MAY VARY PER APPLICATION).

JEEP 4.0L Engines

The JEEP 4.0L (242 cubic inches) engine is a straight-six engine designed specifically for vehicles from the Jeep brand, produced between 1991 and 2007.

The base engine consists of:

An iron engine block and cylinder head
Overhead Valves (OHV)
Multi-Point Fuel Injection (MPI)

The engine specifications include:

  • A displacement of 242 cubic inches (3,967 cubic centimeters)
  • 3.88 in x 3.41 in (98.4 mm x 86.6 mm) cylinder bore and piston stroke
  • 8.8:1 compression ratio
  • 177 to 190 horsepower (132 to 142 kW) at 4,600 to 4,750 rpm
  • 220 to 235 lb-ft (298 to 319 Nm) of torque at 3,000 to 3,250 rpm

The Jeep 4.0L engine has a reputation for its reliability and durability, and it has been used in various Jeep models, including the Cherokee, Grand Cherokee, Wrangler, and Comanche. It is also known for its off-road capability and has been a favorite among Jeep enthusiasts. The engine's longevity can be attributed to its simple design and the use of a cast iron block, which makes it resistant to damage from overheating or wear and tear. Overall, the Jeep 4.0L engine is a tried and true powerhouse that has stood the test of time.


  • Jeep Cherokee (1991-2001)
  • Jeep Grand Cherokee (1993-2004)
  • Jeep Wrangler (1991-2006)
  • Jeep Comanche (1991-1992)


It is worth noting that there may be some variations in the engine specifications and performance between different years and models, even though they use the same 4.0L engine.

A core deposit is a charge added to the purchase of most engines or transmissions. We use the term "deposit" because once your new part is installed, we'll graciously pick-up your old engine or transmission free of charge and then refund the core deposit you paid.

Fraser Engine Rebuilders, Inc.Please leave your Full Name, Phone, and Email and someone in Sales will contact you soon.
To express our thanks, you’ll receive a 3% discount towards your engine or transmission order. 

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