Mahle S42160 Engine Piston Ring Set

Mahle S42160 Piston Ring Set

The Mahle S42160 piston ring set is a premium engine cylinder block component built for 4.0551 in bore applications. It uses a stainless steel top ring, cast iron second ring, and a 2-piece oil ring assembly with gas nitride facing to support controlled oil use and consistent sealing in service.

Compatible With 2010-2016 Chevrolet Express 2500, 2010-2016 Chevrolet Express 3500, 2011-2016 Chevrolet Silverado 2500 HD, 2011-2016 Chevrolet Silverado 3500 HD, 2010-2016 GMC Savana 2500, 2010-2016 GMC Savana 3500, 2011-2016 GMC Sierra 2500 HD, and 2011-2016 GMC Sierra 3500 HD applications that call for standard bore piston rings. This part number, S42160, is built around OE-driven ring design priorities for friction control, oil management, and service life.

• Premium-grade piston ring set for engine rebuild and repair work
• 4.0551 in bore diameter with standard oversize specification
• Stainless steel top ring for durability in high-load operation
• Cast iron second ring for stable sealing performance
• 2-piece oil ring assembly with gas nitride coating and GNS material
• Fits Chevrolet Express, Silverado HD, GMC Savana, and Sierra HD platforms listed above

Engine Sealing and Oil Control

Mahle S42160 is engineered for engines that need precise ring fit, dependable cylinder sealing, and controlled oil consumption. The ring package combines a stainless steel top ring, cast iron second ring, and coated oil ring assembly to address compression sealing, heat exposure, and oil control in demanding truck and van applications. For technicians searching for a piston ring set for 2010-2016 Chevrolet Express 2500 or 2011-2016 GMC Sierra 3500 HD, this part number provides the correct standard-bore service configuration.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Restoring compression loss caused by worn piston rings
• Reducing excessive oil consumption from ring wear
• Addressing blow-by and crankcase pressure issues
• Supporting engine rebuilds on Chevrolet and GMC 6.0L-style applications using the listed bore size
• Replacing damaged or heat-worn ring sets during cylinder service

Installation Notes

Verify bore diameter, ring thickness, and groove dimensions before installation. Clean piston ring grooves thoroughly, check end gaps to manufacturer specifications, and confirm cylinder wall condition before assembly. Because this is a standard-size ring set, it should be matched to the correct bore and engine specification for the vehicle being serviced. Use proper ring installation tools and follow the engine builder’s measurement procedure during assembly.

Quality Assurance

Mahle manufactures piston rings to OE-focused standards with an emphasis on reduced friction, lower oil consumption, and longer service life. The S42160 reflects that engineering approach with premium materials and coated ring surfaces for consistent engine sealing performance.