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MAHLE 50847CP Standard Bore Engine Piston Ring Set

(Chevrolet Corvette 2006-11; Pontiac Firebird 1977, Grand Prix 1976-77, Bonneville 1977-79, LeMans 1977, Catalina 1977-80, Ventura 1977 + 33 more models)

Manufacturer

Picture for manufacturer MAHLE

Part Number

50847CP
10 reviews
Sale Price

$80.54

Estimated ship date Friday, November 20

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Product Details

The MAHLE 50847CP is a premium standard-size engine piston ring set engineered to OE specifications. Designed for a 4.057-inch bore diameter, this complete ring set delivers reliable sealing, reduced oil consumption, and long-lasting engine performance.

Key Features:

  • Standard bore size: 4.057 in. bore diameter, standard oversize
  • Upper compression ring (UCR): Cast iron, BT-10 ring type, 5/64 in. (0.0781 in.) axial height
  • Lower compression ring (LCR): Cast iron, RBT-10 reverse-twist design, 5/64 in. (0.0781 in.) axial height — improves groove side sealing and enhances cylinder wall contact
  • Oil control ring assembly (OCR): Stainless steel CP-20 assembly, chrome-faced, 3/16 in. (0.1875 in.) axial height
  • CP-20 oil ring assembly: Features a 20-degree ear angle for superior side sealing against the cylinder wall, plus a chemically polished expander for enhanced oil drainback
  • Pre-lapped finish: Rings are pre-lapped to seat quickly and virtually eliminate break-in time
  • Optimized ring tension: Materials, coatings, and tension are balanced to reduce friction and extend service life

MAHLE piston rings are developed to meet and exceed original equipment standards, focusing on minimizing friction, reducing ring mass, and controlling engine oil consumption. The CP-20 oil ring assembly is installer-friendly and designed to simplify the rebuild process for professional engine builders and experienced DIYers alike.

Products specifications

Fits

Chevrolet Corvette 2006-11; Pontiac Firebird 1977, Grand Prix 1976-77, Bonneville 1977-79, LeMans 1977, Catalina 1977-80, Ventura 1977, Grand LeMans 1977, Grand Safari 1977, Laurentian 1977-80, Phoenix 1977 + 29 more models

Piston Ring Material

Cast Iron

Piston Ring Size

Standard

Piston Ring Type

Standard

Top Ring Material

Cast iron

I ordered a G-Tech Pro 502 Fanatic Precision Series on Dec 16th and was worried about getting my product on time for christmas but I DID!!<br><br>With the holiday rush it took many days to get a tracking number witch made me worried but when I called the guys where really nice and asure me I'll get my product on time. <br><br>Great Team + Great Price = Happy Costumer

The experience was wonderful. The ability to look up parts by the make, model, and year of my auto made it easy to find the right part. And getting a discount on shipping to encourage my purchase was awesome. I hope the parts all are correct for my vehicl

Quick deliver, great service. Thanks!

It is great and I love the prices!

It was extremely quick and easy to order.

Good!

So far so good.

You need to display more info on clamp dimensions - having to visit other sites to get data necessary to fit to vehicle

Best prices I've ever found on Anco Wiper Blades and refills.

Great

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