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MAHLE 3021259 Performance Napier Piston Ring Set Bore - THM-13 4.185

Manufacturer

Picture for manufacturer MAHLE

Part Number

3021259
10 reviews
Sale Price

$37.86

Estimated ship date Saturday, November 21

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Product Details

The MAHLE 3021259 is a high-performance piston ring set engineered with Napier THM-13 design for demanding applications requiring precise sealing and durability. This ring set is designed for engines with a 4.185-inch bore diameter and features MAHLE's precision manufacturing standards.

Key Specifications:

  • Bore Size: 4.185 inches
  • Top Ring Thickness: 0.043 inches
  • Oil Ring Width: 0.135 inches
  • Napier THM-13 performance configuration
  • Plain ring construction for reliable sealing
  • Manufactured to OE tolerances for precise fit

MAHLE piston rings are engineered using advanced materials and coating technologies to provide superior wear resistance, reduced friction, and optimal cylinder sealing. The Napier design features a shaped profile that enhances oil control and combustion gas sealing, making this ring set ideal for performance rebuilds and racing applications where reliability under high stress is critical.

Easy as pie

First time shopper: Excellent service and value.

I read some of the negative reviews for this site with the BBB and I have to say that I didn't have any of the problems that some had. I got emails to let me know what was going on with my order and followed up to make sure I received it and that it was all there. I gave it 4 stars on delivery time because it took days to process the order as to most sites that only take less than a business day. Considering the cheaper prices and free shipping it was worth the wait. This was my first time ordering anything from this site and I'm very satisfied. I would recommend ordering from here and will do so again myself.

Easy and fast thanks

Super easy and the best price!

so far so good

It was quick and easy and matched my part to make sure it would fit. Just waiting to see how quick shipping will be now.

easy, smooth transaction. Reasonably priced item. I was hesitant when reading some negative reviews, but took a chance anyway. I'm glad that I did. Item quickly received; no problems. Will buy from again.

Quick service

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