Mahle 41902CP.020 Engine Piston Ring Set

Engine Piston Ring Set Overview

MAHLE 41902CP.020 is a premium engine piston ring set built for 4.270-inch bore applications with a 0.020-inch oversize. It uses cast iron top and second rings, a stainless steel oil ring assembly, and a plasma-moly face coating for demanding engine service.

Key Features

• Premium-grade piston ring set for engine rebuild and repair work
• 4.270-inch bore diameter with 0.020-inch oversize sizing
• Plasma-moly ring face coating for reduced friction at the ring face
• Cast iron top and second rings for durable sealing performance
• Stainless steel oil ring assembly for oil control
• Shallow groove design for listed applications

Detailed Description

MAHLE 41902CP.020 is engineered for heavy-duty Chevrolet and GMC gasoline applications that require a 0.020-inch oversize piston ring set. The ring package combines cast iron compression rings with a stainless steel oil control assembly, while the plasma-moly face coating supports low-friction operation and helps manage oil consumption. This part number, 41902CP.020, is listed for a wide range of Chevrolet Silverado, Suburban, Avalanche, Express, and GMC Sierra, Yukon XL, Savana, Topkick, and Kodiak applications from 2001-2009.

MAHLE piston rings are developed around OE requirements and focus on reducing friction and ring mass while supporting longer service life. For buyers searching for a Chevrolet Silverado 2500 HD piston ring set 0.020 oversize or a GMC Sierra 3500 piston ring set, 41902CP.020 matches the listed shallow groove configuration and bore specification.

What It Is Used For

• Restoring cylinder sealing during engine rebuilds
• Addressing oil control concerns from worn ring packs
• Replacing worn compression rings in oversize bore applications
• Supporting compression recovery in high-mileage engines
• Matching the listed shallow groove piston design

Installation Notes and Tips

Verify bore diameter, groove style, and oversize requirements before installation. Confirm the engine’s ring land dimensions and compare the existing ring package to the listed 4.270-inch bore and 0.020-inch oversize specification. Fitment includes 2001-2009 Chevrolet and GMC truck, van, and medium-duty applications; review the exact vehicle listing before ordering. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

MAHLE is known for piston ring engineering developed to OE requirements, with an emphasis on friction reduction, oil control, and service life. Part number 41902CP.020 reflects that technical approach for rebuild applications.