What is a Napier ring and why is it used?

A Napier ring is a type of piston ring designed with a specific shape that helps improve oil control and reduce blow-by. This design can lead to better engine performance and efficiency.

What does the '48 Qty Bulk Pack' mean?

This means the product contains 48 individual piston rings. It's intended for engine builders or machine shops working on multiple engines or large projects.

Can these rings be shipped to California?

No, these rings are not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle OE Piston Rings 3021303B - 4.265in x 1.0MM

Name: Mahle Rings Perf Napier Steel 2nd Ring 4.265in x 1.0MM .136in RW Plain Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-perf-napier-steel-2nd-ring-4-265in-x-1-0mm-136in-rw-plain-r-t14-48405
Price: 271.18 USD
Availability: BackOrder

Mahle Rings Perf Napier Steel 2nd Ring 4.265in x 1.0MM .136in RW Plain Ring Set (48 Qty Bulk Pack)

$271.18

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 Piston Rings Perf Napier Steel 2nd Ring 4.265in x 1.0MM .136in RW Plain Ring Set (48 Qty Bulk Pack). Well-built steel rings for engine rebuilds.

Key Features

This product is a bulk pack containing 48 Mahle OE Napier steel second rings.
Each ring measures 4.265 inches in diameter.
The rings have a thickness of 1.0mm.
The second ring groove depth is 0.136 inches.
Features a Napier design for improved oil control and reduced blow-by.
Constructed from durable steel for long-lasting performance.

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Product Details

This bulk pack includes 48 Mahle OE Napier steel second rings, each measuring 4.265 inches with a 1.0mm thickness and a 0.136-inch depth. These rings are designed for engine rebuilding applications where a large quantity of high-performance second rings is needed. The Napier design offers improved oil control and reduced blow-by, contributing to better engine performance and longevity.

Mahle OE is known for well-built engine components, and these Napier steel rings are no exception. The steel construction offers solid durability, while the specific 1.0mm thickness and 0.136-inch depth are critical dimensions for proper piston fitment and sealing. This bulk pack is ideal for machine shops or builders working on multiple engines or larger projects, ensuring you have a reliable supply of quality rings on hand.

Please note that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for installation procedures and critical measurements.