Specifications
- Brand
- Mahle OE
- Part #
- 3021262B
- UPC
- 027067002693

Mahle Rings Performance Napier THM-13 4.005in x 1.5MM Plain Ring Set (48 Qty Bulk Pack)
$207.63
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Mahle OE THM-13 piston ring set, 4.005in bore size. Bulk 48-piece pack for engine builds. Not CARB approved.
Key Features
- This is a Mahle OE THM-13 piston ring set.
- The top ring features a 1.5mm Napier hook for improved oil control.
- Each ring set is designed for a 4.005-inch bore size.
- This is a bulk pack containing 48 individual ring sets.
- The rings have a plain finish for reliable performance.
- Not CARB approved; cannot ship to California.
Product Details
The 1.5mm Napier hook on the top ring of this Mahle THM-13 set is a key design choice for improved oil control. This unique shape helps to scrape oil from the cylinder wall more effectively as the piston moves down, reducing oil consumption and blow-by. This bulk pack contains 48 sets, making it a solid option for shops or builders working on multiple engines that require a 4.005-inch bore size.
Mahle is known for well-built engine components, and these piston rings are no exception. They are constructed from durable materials designed to withstand the rigors of engine operation. The plain finish on these rings is a straightforward approach that focuses on reliable performance. When you're rebuilding an engine, the piston rings are critical for sealing the combustion chamber and managing oil, and this set from Mahle OE offers a practical solution for many applications.
Specifications
- Brand
- Mahle OE
- Manufacturer Part #
- 3021262B
- UPC
- 027067002693
Frequently Asked Questions
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Mahle Rings Performance Napier THM-13 4.005in x 1.5MM Plain Ring Set (48 Qty Bulk Pack)






