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MAHLE 3021273 Performance Steel Napier Piston Ring Set Bore - THM-13 4.155

Manufacturer

Picture for manufacturer MAHLE

Part Number

3021273
10 reviews
Sale Price

$40.16

Estimated ship date Saturday, November 21

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Product Details

The MAHLE 3021273 is a high-performance steel piston ring set designed for precision engine builds requiring a 4.155-inch bore diameter. This professional-grade ring set features MAHLE's advanced Napier THM-13 design, engineered to deliver superior sealing, reduced friction, and enhanced durability in demanding applications.

Key Specifications:

  • Bore Size: 4.155 inches
  • Top Ring: 1.5mm steel construction
  • Second Ring: 1.5mm Napier THM-13 design
  • Oil Ring: 3.0mm (standard thickness)
  • Radial Wall Thickness: 0.150 inches
  • Plain ring configuration for custom end-gap filing

Performance Features:

  • Premium steel construction provides exceptional strength and heat resistance
  • Napier THM-13 second ring design optimizes oil control and combustion sealing
  • Plain rings allow precise end-gap customization for specific applications
  • Engineered for high-performance and racing applications
  • Manufactured to MAHLE's strict OE and motorsport quality standards

This ring set is ideal for custom engine builds, performance rebuilds, and racing applications where precise bore sizing and optimal ring performance are critical. The plain ring design requires professional installation and proper end-gap fitting.

Price is awesome

so far so good

good

Lovin it!

Easy to find

Thank you

Very easy to use

Item price, availability & shipping price all seem good... So far...

Couldn't choose any of my other amazon shipping addresses as my method of payment showed no payment method for any other address so I had to take shipment to my main address and now I have to drive the parts to where I need them 90 mins round-trip plus t

good experience overall. decent website. good price for item purchased. would give 5 stars but I havent yet experienced the shipping and handling time.

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