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MAHLE 42079CP.030 Premium Plasma-Moly Piston Ring Set Oversize - 0.030 L4

(1990-1995 Chevrolet Corvette ZR-1; 2009-2011 Chevrolet HHR; 2009-2010 Chevrolet Cobalt; 2002 Pontiac Sunfire; 2008-2010 Pontiac G5; 2005-2006 Pontiac G4)

Part of: MAHLE Premium Piston Ring Set Bore Plasma-Moly

Other options in this family: MAHLE S42140.020 MAHLE 41859CP MAHLE 41789 MAHLE 41897CP MAHLE 41786

Manufacturer

Picture for manufacturer MAHLE

Part Number

42079CP.030
10 reviews
Sale Price

$67.62

Estimated ship date Monday, November 23

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Product Details

The MAHLE 42079CP.030 is a premium plasma-moly engine piston ring set designed for 4-cylinder (L4) applications at a +0.030" overbore (3.416 in. bore diameter). Engineered to OE-quality standards, this set delivers superior sealing performance, reduced friction, and an installer-friendly design that makes it an ideal choice for engine rebuilds and overhauls.

Key Features:

  • Plasma-Moly Coating: Top compression rings feature a plasma-moly inlay for exceptional wear resistance, improved scuff resistance, and long service life
  • Pre-Lapped Rings: Rings are pre-lapped at the factory to seat immediately, virtually eliminating break-in time
  • Barrel-Faced Compression Rings: Provides more efficient compression sealing and CNC-controlled gap chamfer to minimize blow-by
  • Reverse-Twist Intermediate Rings: Designed with a reverse twist profile and taper-race machining for superior groove side sealing and enhanced cylinder wall contact
  • CP-20 Oil Ring Assembly: Features a 20-degree ear angle for the best possible side seal against the cylinder wall, plus a chemically polished oil ring expander for enhanced oil drain-back
  • Ring Thicknesses: 1.2mm (top), 1.5mm (intermediate), 2.0mm (oil)
  • Optimized Ring Tension: Materials, coatings, and tension are all application-specific for reduced friction and extended engine life
  • Sold as a Set: Includes all rings required for one cylinder

MAHLE is a globally recognized OE supplier and aftermarket leader, manufacturing piston rings to the same exacting tolerances found in original equipment applications. The 42079CP.030 ring set is the go-to choice for professional engine builders seeking a reliable, high-performance solution for 4-cylinder engine rebuilds.

Products specifications

Fits

1990-1995 Chevrolet Corvette ZR-1; 2009-2011 Chevrolet HHR; 2009-2010 Chevrolet Cobalt; 2002 Pontiac Sunfire; 2008-2010 Pontiac G5; 2005-2006 Pontiac G4

Piston Ring Size

.030IN

They had great email communication and shipped my items from order number 14199 very quickly. I was very impressed with how they handled my order.

fast

quick and easy

Very fast service

So Far So Good

Quick and easy

Lowest price and quick turn-around on the order! 1-800 support (for tech info) was prompt, courteous, and helpful for the part I was ordering.

Phone service was quick and personable wanting to solve my problem immediately. The weight of my package was wrong causing shipping to be $300 to ship a gas can but was fixed right away. Prices were great! I would purchase through them again!

Great

One of the best prices on the web for my Bilstein shocks. And super fast shipping! I ordered on a Mon night and they arrived Wed afternoon!!

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