What does the .030 in the part number mean?

The .030 in the part number indicates that this is an undersize piston ring set. Specifically, these rings are 0.040 inches smaller in diameter than standard size rings, which is used when pistons have been bored out to a larger size.

What is the benefit of moly coating on piston rings?

Moly coating on piston rings helps to reduce friction between the ring and the cylinder wall. This can lead to improved engine efficiency, reduced oil consumption, and a longer service life for both the rings and the cylinder bore.

Are these rings suitable for a performance build?

Mahle OE rings are designed to meet original equipment specifications, focusing on durability and minimizing oil consumption. While they are well-built for reliable operation, they are not specifically marketed as performance racing rings.

Mahle OE Moly Ring Set 40076CP.030 - Chevy 283/307 Engines

Name: Mahle Rings Checker 283/307 Engs 65-70 Chevy 283/307 Engs 57-73 Chevy Marine Moly Ring Set
Brand: Mahle OE
Price: 89.57 USD
Availability: InStock

Mahle Rings Checker 283/307 Engs 65-70 Chevy 283/307 Engs 57-73 Chevy Marine Moly Ring Set

$89.57

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, 0.040 inch undersize. Fits many Chevy 283/307 engines from 1957-1973.

Key Features

Fits 1957-1973 Chevrolet 283 and 307 cubic inch engines.
Moly coating helps reduce friction and extend ring life.
Designed to meet original equipment requirements for oil consumption and performance.
This is a 0.040 inch undersize ring set.
Suitable for a wide range of vehicle applications, including marine use.
Manufactured by Mahle OE.

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Will this fit your vehicle?

Product Details

When you're rebuilding the engine in your classic Chevy, whether it's a pickup, a muscle car, or even a marine application, getting the piston rings right is crucial for performance and longevity. This Mahle OE Moly Ring Set is designed for 283 and 307 cubic inch engines, covering a wide range of vehicles from the late 1950s through the early 1970s.

Mahle is known for making technically advanced piston rings that meet original equipment requirements. These particular rings are moly-coated, which helps reduce friction between the piston and cylinder wall. This not only contributes to a longer service life for your engine but also helps minimize oil consumption, keeping your rebuild running smoothly and efficiently. This set is 0.040 inch undersize, which is important to note for your build specifications.

This set fits a broad spectrum of vehicles, including popular models like the Chevrolet Bel Air, Impala, Chevelle, and C10 Pickup, as well as various marine applications. Ensure you check the full fitment list to confirm compatibility with your specific project.