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MAHLE 3021271 Performance Piston Ring Set Bore Napier - 4.135 THM-13

Manufacturer

Picture for manufacturer MAHLE

Part Number

3021271
12 reviews
Sale Price

$32.77

Estimated ship date Saturday, November 21

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Product Details

The MAHLE 3021271 is a high-performance steel piston ring set designed for precision engine builds requiring a 4.135-inch bore diameter. This professional-grade ring set features MAHLE's Napier THM-13 configuration, engineered for demanding applications where reliability and performance are critical.

Key Specifications:

  • Bore diameter: 4.135 inches
  • Top ring width: 1.5mm
  • Ring wall thickness: 0.150 inches (radial width)
  • Plain ring design for optimal sealing
  • Performance steel construction for durability and heat resistance
  • Napier THM-13 profile for superior oil control

MAHLE piston rings are manufactured to OEM specifications and beyond, utilizing advanced materials and coatings to ensure maximum compression sealing, reduced friction, and extended service life. The steel construction provides excellent wear resistance and dimensional stability under high-temperature operating conditions, making this ring set ideal for performance rebuilds, racing applications, and heavy-duty engine work.

easy

So far so good

The shopping part was easy, but it would be nice if you would advise what other parts may be necessary to install this kickdown cable. A bracket for a certain carb. maybe? Will this all hook up with what I have? Hopefully I won't have to order another part to get it all hooked up.

Autoplicity has a wide selection of parts and great prices. Fast shipping and great customer service.

Went very smoothly.

Wow, I ordered H&R springs for my Porsche and they arrived in 2 days and for 15 dollars cheaper then anyone else on the internet. Awesome place to shop and the live accurate inventory is how everyone should operate.

Products looks great. Have not had a chance to check fit yet

Easy to order, had the part I needed.

Recieved exactly what i wanted and and it only took 2 days to get here! will do business with again! A++++++

Autoplicity had the Readylift kit I needed at the best price I could find. They shipped it very quickly as well. I am very pleased with this transaction.

great. couple clicks on mouse and wham! its ordered.

Great so far! Prices are very reasonable!

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