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MAHLE 42106CP.040 Premium Engine Piston Ring Set Oversize - 0.040

(2005-2007 Cadillac CTS; 2008-2009 Pontiac G8 GT; 2009 Pontiac G8 GXP; 2006-2008 Chevrolet Vectra)

Manufacturer

Picture for manufacturer MAHLE

Part Number

42106CP.040
14 reviews
Sale Price

$97.33

Estimated ship date Friday, November 20

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Product Details

The MAHLE 42106CP.040 is a premium engine piston ring set ground to a 0.040-inch oversize bore specification, engineered for professional engine rebuilds and overhauls. As the world's largest manufacturer of piston rings, MAHLE Original delivers OEM-grade quality and precision in every set.

These rings are part of MAHLE's renowned CP-series lineup, designed to be installer-friendly and built to restore like-new engine performance. Each set is pre-lapped at the factory to seat immediately upon installation, virtually eliminating traditional break-in time.

Key Features:

  • Pre-lapped finish for immediate seating and minimal break-in time
  • Barrel-faced top compression ring for efficient compression and reduced blow-by
  • CNC-controlled gap chamfer on compression rings to optimize sealing and minimize combustion gas leakage
  • Reverse-twist intermediate ring design provides superior groove side sealing and enhanced cylinder wall contact via taper race machining
  • CP-20 oil ring assembly featuring a 20-degree ear angle for optimal side sealing against the cylinder wall
  • Chemically polished oil ring expander for enhanced oil drain-back performance
  • Ring materials, coatings, and tension levels are application-optimized for reduced friction and extended service life
  • Manufactured to OEM specifications — MAHLE is a direct OE supplier to major global engine manufacturers
  • Sold as a complete set

The MAHLE 42106CP.040 piston ring set is the trusted choice of professional engine builders seeking reliable compression, effective oil control, and long-term durability in a rebuilt engine application.

Products specifications

Fits

2005-2007 Cadillac CTS; 2008-2009 Pontiac G8 GT; 2009 Pontiac G8 GXP; 2006-2008 Chevrolet Vectra

Piston Ring Size

.040IN

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