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MAHLE 51786CP.020 Perfect Circle Piston Ring Set .020 Over Bore

(Chevrolet Silverado 1500 1999-2014, S10 1995-2004, C1500 1988-99, Blazer 1995-2005, K1500 1988-99, Express 2500 1996-2005, Astro 1995-2005 + 21 more models)

Manufacturer

Picture for manufacturer MAHLE

Part Number

51786CP.020
12 reviews
Sale Price

$45.50

Estimated ship date Friday, November 20

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Product Details

The MAHLE Perfect Circle 51786CP.020 is a premium oversize piston ring set engineered for engine rebuilds requiring a .020" overbore. MAHLE Perfect Circle is one of the most trusted names in piston ring manufacturing, delivering OEM-grade performance and durability for professional engine builders and serious DIY rebuilders alike.

These rings are manufactured to exacting tolerances, ensuring proper cylinder seal, optimal compression retention, and controlled oil consumption. The set is designed as a direct replacement for worn or damaged OEM rings during engine overhaul or rebuild applications.

Key Features:

  • Oversize designation: .020" (.020 over standard bore)
  • Manufactured by MAHLE under the Perfect Circle brand — a benchmark in ring technology
  • Precision-ground to tight dimensional tolerances for consistent gap and wall thickness
  • Engineered for proper tension, seating, and long-term cylinder seal
  • Suitable for use in professional engine rebuild and overhaul applications
  • Includes compression rings and oil control ring components as a complete set
  • Meets or exceeds OEM specifications for fit and performance

MAHLE Perfect Circle piston rings are a go-to choice for engine builders demanding reliable compression sealing and minimal oil consumption after rebuild. Correct installation with proper ring gap orientation is recommended per engine manufacturer specifications.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2014, S10 1995-2004, C1500 1988-99, Blazer 1995-2005, K1500 1988-99, Express 2500 1996-2005, Astro 1995-2005, Express 1500 1996-2014, P30 1996-99, 2001, G30 2001-02, Silverado 1500 Classic 2007 + 17 more models

Piston Ring Size

.020IN

Piston Ring Type

Standard

Cheap

They have easy forms and fair prices

Easy site to use.

great !

Surprisingly quick and easy.

Looking forward to testing your prudent.

This part has been discontinued years ago, nice to find one.

Found an item that has been unavailable every where I have looked.

quick and painless with very good pricing

92-96 Honda prelude

good prices.

They had all the parts that i needed and shipped very fast had them in two days after ordered will buy again from autoplicity.

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