How many pistons do I need for my engine?

This piston is sold individually. For a complete engine rebuild, you will need to purchase four pistons to replace all cylinders.

What does '.040 over' mean for this piston?

'.040 over' indicates that this piston is 0.040 inches larger in diameter than the original factory standard piston. This size is used when the engine cylinder walls have been bored out to accommodate wear.

Does this piston come with rings?

This product listing is for the piston and wrist pin only. Piston rings are sold separately and are required for proper engine function.

OMIX

Specifications

Brand: OMIX
Part #: 17427.04
UPC: 804314039974

OMIX

Omix Piston 134Ci .040 41-71 Willys & Jeep

Name: Omix Piston 134Ci .040 41-71 Willys & Jeep
Brand: OMIX
Price: 64.31 USD
Availability: InStock

$64.31

On Backorder

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Omix replacement piston for 134ci engines, .040 overbore. Fits 1941-1971 Willys and Jeep models. Includes wrist pin.

Key Features

Fits 1941-1971 Willys and Jeep models with 134 ci engines.
Piston is .040 inches over the standard bore size.
Includes the necessary wrist pin for installation.
Sold individually; four pistons are needed per engine.
This is a replacement piston for worn engine components.
Covered by a limited 5-year warranty from Omix.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

When you're rebuilding a worn-out engine, replacing internal components is key to getting back that original performance. This Omix replacement piston is built for 134 cubic inch engines and is sized .040 inches over the standard bore. It's designed to fit a wide range of classic Willys and Jeep models from 1941 through 1971, including popular vehicles like the CJ5, CJ6, and Jeepster.

This piston is a well-built replacement part that includes the necessary wrist pin. It's important to note that engine work is required for installation, and these pistons are sold individually, so you'll need four for a complete engine set. Using the correct overbore size is crucial for a proper seal and optimal engine function after a rebuild.