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MAHLE 3021239B Performance Piston Ring Set Bore Napier Steel - 4.045

Manufacturer

Picture for manufacturer MAHLE

Part Number

3021239B
10 reviews
Sale Price

$5.84

Estimated ship date Saturday, November 21

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Product Details

The MAHLE 3021239B is a high-performance piston ring set engineered for precision engine builds requiring a 4.045-inch bore diameter. This bulk plain ring set features advanced Napier steel construction on the second ring, providing exceptional wear resistance and oil control in demanding performance applications.

Key Specifications:

  • Bore diameter: 4.045 inches
  • Ring width: 1.0mm
  • Radial wall thickness: 0.136 inches
  • Second ring material: Performance Napier steel
  • Configuration: Bulk plain ring set

MAHLE's precision manufacturing ensures optimal ring seal, reduced blow-by, and consistent performance across the entire bore surface. The Napier profile on the second ring provides superior oil control while maintaining excellent conformability to cylinder walls, making this ring set ideal for both street performance and racing applications.

I need to make sure I get the 20% off shipping as stated.

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Good

easy to find the Cab Spoiler for my 2003 GMC Sonoma Extended Cab SLS. Great price also!

Fast and easy, shipping is high for the weight and size.

Smooth

great prices!!! just waiting for my part and I'll return to give a new feedback

very good

Excellent ease of shopping and moving about site!

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