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MAHLE 3021291 Performance Steel Napier Piston Ring Set Bore - THM-13 4.010

Manufacturer

Picture for manufacturer MAHLE

Part Number

3021291
12 reviews
Sale Price

$39.84

Estimated ship date Saturday, November 21

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Product Details

The MAHLE 3021291 is a high-performance steel piston ring set designed for precision engine builds requiring a 4.010-inch bore diameter. This Napier THM-13 style ring set features premium steel construction for superior durability and heat resistance in demanding applications.

Key Specifications:

  • Bore Size: 4.010 inches
  • Ring Thickness: 0.043 inches
  • Radial Wall: 0.135 inches
  • Plain ring design without coating
  • Performance-grade steel material
  • Napier THM-13 configuration

MAHLE piston rings are engineered to exacting tolerances to ensure optimal compression sealing, oil control, and long-term reliability. The steel construction provides excellent wear characteristics and maintains ring tension under high-temperature operating conditions. This plain ring set is suitable for performance engine rebuilds and custom applications where precise bore sizing is critical.

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Fast and easy just hope shipping is just as fast

best price i found online

n/a

It was fine

Very good service

great pricing and shipping

Website is user friendly and easy to navigate.

Ordering was easy. The product is described well I loved the "Pay with Amazon" feature. I'll update once the package gets here!

fast shipping great price<br>great seller i recommend it 100% percent<br><br>

sweet

easy

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