What does '.030 Over' mean for piston rings?

'.030 Over' indicates that these piston rings are sized to fit pistons that are 0.030 inches larger in diameter than the standard factory size. This is used when the engine's cylinder walls have been bored out to remove wear or damage and restore proper clearance.

Does this set include everything needed for one engine?

Yes, this piston ring set includes a full set of rings required for one complete engine. You will have all the necessary rings for all the pistons in your engine.

What is the warranty on this Omix piston ring set?

This Omix piston ring set comes with a limited 5-year warranty. Please refer to the manufacturer's warranty documentation for full details and coverage.

Specifications

Brand: OMIX
Part #: 17430.21
UPC: 804314130787

OMIX

Omix Piston Ring Set .030 72-90 Jeep CJ & Wrangler

Name: Omix Piston Ring Set .030 72-90 Jeep CJ & Wrangler
Brand: OMIX
SKU: omix-omix-piston-ring-set-030-72-90-jeep-cj-wrangler-t14-441327
Price: 92.15 USD
Availability: BackOrder

$92.15

On Backorder

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Omix .030 over piston ring set for 1972-1990 Jeep CJ and Wrangler models. Essential for engine rebuilds to restore original performance.

Key Features

Fits 1972-1990 Jeep CJ and Wrangler models with 3.8L or 4.2L engines.
This is a 0.030 inch overbore piston ring set.
Includes a full set of rings for one engine.
Replaces original equipment part number 4485572.030.
Backed 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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About this part

Product Details

When you're diving into an engine rebuild for your Jeep, especially if you're dealing with worn cylinder walls, a fresh set of piston rings is a must. This Omix piston ring set is specifically sized at 0.030 inches over the standard bore, designed to help you restore compression and get your engine running like it used to. It's a key part of bringing an engine back to its original performance levels after wear and tear.

This set includes all the rings needed for one complete engine, fitting a wide range of Jeep models from the early CJ series through the YJ Wrangler. The 0.030-inch overbore size is crucial for engines where the cylinder walls have been honed or bored out to clean up imperfections. Using the correct overbore size ensures a proper seal between the piston and the cylinder wall, which is vital for good compression and oil control.

Remember that installing piston rings is part of a larger engine overhaul. Make sure to check the manufacturer's instructions for proper installation procedures, as engine work may be required. This set is designed to replace OE part number 4485572.030 and comes with a limited 5-year warranty from Omix.