What does the '.030' in the part number mean?

The '.030' in the part number indicates that these piston rings are 0.030 inches undersize. This means they are intended for use in cylinders that have been bored out by 0.030 inches during an engine rebuild.

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

The moly coating on the top ring helps to reduce friction between the ring and the cylinder wall. This can lead to improved engine efficiency, reduced wear, and a longer service life for both the rings and the cylinder bores.

Are these rings suitable for a standard bore engine?

No, these rings are 0.030 inch undersize. They are designed for engines where the cylinders have been bored out by 0.030 inches. For a standard bore, you would need a different size ring set.

Mahle OE Piston Rings Moly Ring Set 40514CP.030

Name: Mahle Rings Buick 250 Eng 70-76 Checker 230/250 Engs 69-79 Chevy 230/250 Moly Ring Set
Brand: Mahle OE
Price: 67.65 USD
Availability: InStock

Mahle Rings Buick 250 Eng 70-76 Checker 230/250 Engs 69-79 Chevy 230/250 Moly Ring Set

$67.65

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, Checker, and Chevy 230/250 engines. 0.040 inch undersize.

Key Features

Fits a wide range of Buick, Checker, and Chevrolet vehicles with 230/250ci engines.
Moly coating on the top ring reduces friction and wear.
Helps minimize engine oil consumption.
Designed for longer service life.
This is a 0.040 inch undersize ring set.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

When you're rebuilding the top end of your classic inline-six, getting the piston rings seated properly is key to a healthy engine. These Mahle OE Moly Piston Ring Sets are designed for engines like the Buick 230/250, Checker 230/250, and Chevrolet 230/250 found in a wide range of vehicles from the mid-60s to the late-70s.

Mahle has a long history of supplying parts for original equipment manufacturers, and these rings are built with that experience in mind. They feature a moly coating on the top ring, which helps reduce friction and wear against the cylinder wall, especially during the critical break-in period. This coating also helps minimize oil consumption and can contribute to a longer service life for your engine. This particular set is 0.040 inch undersize, which is important if your cylinders have been bored out to that size during a rebuild.

Proper ring installation is crucial for performance and longevity. Always refer to your vehicle's service manual for the correct installation procedures and break-in recommendations.