Overview

Mahle piston ring set 42100CP is a premium standard-size ring set for select GM compact and midsize applications. It uses a carbon steel top ring, cast iron second ring, and chrome-faced ring surfaces to support low friction and controlled oil use.

Compatible With Chevrolet Captiva Sport, Cobalt, HHR, and Malibu; Pontiac G4, G5, G6, Pursuit, and Solstice; and Saturn Aura, Ion, Sky, and Vue applications listed below. This Mahle 42100CP piston ring set is built around OE-driven engineering for service life and ring performance.

• Standard oversize specification for engines that call for standard bore fitment
• Chrome piston ring face coating for reduced wear at the ring surface
• Carbon steel top ring for strength and stable sealing performance
• Cast iron second ring for dependable cylinder wall contact
• Shallow groove design for the listed ring package configuration
• Premium grade construction from Mahle engine components

Detailed Fitment

Fits 2008 Chevrolet Captiva Sport, N/A. Fits 2010 Chevrolet Captiva Sport, N/A. Fits 2006-2008 Chevrolet Cobalt, N/A. Fits 2006-2008 Chevrolet HHR, N/A. Fits 2008 Chevrolet Malibu, N/A. Fits 2006 Pontiac G4, N/A. Fits 2006 Pontiac Pursuit, N/A. Fits 2007-2008 Pontiac G5, N/A. Fits 2006-2008 Pontiac G6, N/A. Fits 2006-2008 Pontiac Solstice, N/A. Fits 2006-2007 Saturn Ion, N/A. Fits 2007-2008 Saturn Aura, N/A. Fits 2007-2008 Saturn Sky, N/A. Fits 2007-2008 Saturn Vue, N/A.

Mahle 42100CP is suited for engine rebuild work where ring material, coating, and axial height need to match the original application requirements. The ring package is engineered to reduce friction, limit oil consumption, and support longer service life in the cylinder block assembly. For shoppers comparing Mahle 42100CP against other options, this part cross-references Hastings Piston Rings (e.g., 2C5228) for the same application.

What It Helps Address

• Excessive oil consumption from worn or mismatched piston rings
• Loss of compression caused by ring wear or poor sealing
• Increased friction from degraded ring surfaces
• Smoke or oil control issues during engine operation
• Engine rebuilds requiring standard-size ring dimensions

Installation Notes

Verify bore diameter, ring thickness, and groove style before installation. This set is specified for a 3.4646 in bore and standard oversize applications with shallow groove configuration. Confirm the ring package matches the engines cylinder and piston specifications before assembly.

Quality Assurance

Mahle develops piston rings to OE requirements and focuses on friction reduction, oil control, and service life. Part number 42100CP reflects that engineering approach for engine rebuild applications.