What does it mean that these rings are 0.020 inch undersize?

This means the rings are designed to fit into cylinder bores that have been machined to be 0.020 inches larger than their original factory size. This is a common practice when rebuilding an engine to ensure a fresh, true surface for the pistons and rings.

What is the benefit of the moly coating on these piston rings?

The moly (molybdenum) coating helps to reduce friction between the piston ring and the cylinder wall. This can lead to a smoother break-in process, improved engine efficiency, and a longer service life for both the rings and the cylinder bores.

Are these rings compatible with all 2.8L engines from the 1980s?

This specific ring set is designed for the 173 cubic inch (2.8L) engine found in various Buick, Chevrolet, GMC, Jeep, Oldsmobile, and Pontiac models between 1980 and 1988. It's important to verify fitment for your exact vehicle and engine configuration.

Mahle OE Piston Rings Moly Ring Set 41284CP.020

Name: Mahle Rings Buick 173 2.8L Eng 81-84 Chevy 173 2.8L Eng 81-84 Chevy Trk 173 Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-buick-173-2-8l-eng-81-84-chevy-173-2-8l-eng-81-84-chevy-trk-t14-50685
Price: 62.36 USD
Availability: BackOrder

Mahle Rings Buick 173 2.8L Eng 81-84 Chevy 173 2.8L Eng 81-84 Chevy Trk 173 Moly Ring Set

$62.36

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle OE Moly Piston Ring Set for Buick 173 2.8L and Chevy 173 2.8L engines. These are 0.020 inch undersize rings for engine rebuilding.

Key Features

Fits Buick Century, Chevrolet Camaro, and many other vehicles from 1980-1988.
This is a 0.020 inch undersize piston ring set.
Features a moly coating to reduce friction and improve service life.
Designed to minimize engine oil consumption.
Built to meet OE requirements for performance and durability.
Mahle OE brand piston rings.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

These Mahle Moly piston rings are 0.020 inch undersize, meaning they're intended for engine blocks that have been bored out to match. When you're rebuilding an engine, especially one with a few miles on it, boring the cylinders is a common step to get a fresh, true surface for the pistons and rings to work against. Mahle designs these rings with OE requirements in mind, focusing on reducing friction and minimizing oil consumption to help your engine run efficiently and last longer.

The moly coating on these rings is a key feature. Moly, or molybdenum, is a hard coating that helps reduce friction between the ring and the cylinder wall. This not only helps with break-in but also contributes to a longer service life for both the rings and the cylinder bores. They're built to handle the demands of everyday driving, aiming for a good balance of performance and durability.

This set is designed to fit a range of vehicles from the early to mid-1980s, including popular models like the Buick Skylark, Chevrolet Camaro, and Pontiac Firebird. If you're in the middle of a top-end rebuild or addressing oil consumption issues on one of these vehicles, this Mahle ring set is a solid option to consider for getting your engine back in good working order.