What is the Napier hook design and why is it beneficial?

The Napier hook design on the second ring helps improve oil control by scraping oil on the downstroke and preventing it from reaching the combustion chamber. It also aids in reducing blow-by by creating a better seal against the cylinder wall, especially during the power stroke.

What does 'bulk pack' mean for this product?

A bulk pack means you receive a larger quantity of the item, in this case, 48 rings. This is often more economical for engine builders or shops working on multiple engines or performance builds.

Can these rings be used in any engine build?

These rings are specifically designed for performance engine applications and a 4.150 inch bore. While they are built to OE standards by Mahle, always verify compatibility with your specific engine's requirements and consult your build specifications before installation.

Mahle OE Piston Rings 3021282B - Performance Napier Steel

Name: Mahle Rings Perf Napier Steel 2nd Ring 4.150in x 1.0MM .136in RW Pack Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-perf-napier-steel-2nd-ring-4-150in-x-1-0mm-136in-rw-pack-ri-t14-48434
Price: 247.17 USD
Availability: BackOrder

Mahle Rings Perf Napier Steel 2nd Ring 4.150in x 1.0MM .136in RW Pack Ring Set (48 Qty Bulk Pack)

$247.17

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 Performance Napier Steel 2nd Ring Set. 4.150in bore, 1.0mm width. Bulk pack of 48 rings.

Key Features

This product is a bulk pack containing 48 Mahle OE Performance Napier Steel 2nd rings.
Each ring has a bore diameter of 4.150 inches.
The ring width is 1.0mm, and the thickness is 0.136 inches.
Features a Napier hook design on the second ring for improved oil control and reduced blow-by.
Constructed from steel for durability and consistent tension.
Designed for performance engine applications.

Secure CheckoutFast Shipping631-982-0042

Product Details

This bulk pack gives you 48 Mahle OE Performance Napier Steel 2nd rings, each measuring 4.150 inches in bore diameter, 1.0mm in width, and 0.136 inches in thickness. These rings are designed for performance applications, featuring a Napier hook design on the second ring which helps improve oil control and reduce blow-by. This specific design is well-regarded for its ability to maintain a good seal under demanding conditions.

Mahle is a well-known name in engine components, and these rings are built to their OE standards. The steel construction offers durability and consistent tension, which is crucial for proper piston ring function. The Napier hook design is a notable feature that helps the ring conform to the cylinder wall, especially during the power stroke, contributing to improved engine efficiency and power delivery. This pack is ideal for engine builders or shops working on multiple performance builds.

Please note that these rings are not CARB approved and cannot be shipped to California. Always refer to your specific engine build requirements and manufacturer recommendations for proper installation and application.