Mahle 42264 Engine Piston Ring Set

Engine Piston Ring Set Overview

Mahle 42264 is a premium engine piston ring set built to OE-driven specifications for controlled friction, reduced oil consumption, and long service life. It is sized for standard bore applications and uses a stainless steel top ring, carbon steel second ring, and a two-piece oil ring assembly.

Key Features

• Standard bore diameter of 3.4843 in for precise cylinder matching.
• Premium-grade ring set with stainless steel and carbon steel ring materials.
• Gas-nitride and PVD-style face treatment for the top ring, with chrome on the second ring.
• Two-piece oil ring assembly with GNS material and 0.0783 in axial height.
• Top and second rings measure 0.0390 in axial height for consistent sealing geometry.

Detailed Application Notes

This Mahle 42264 piston ring set is engineered for 2007-2011 Toyota Camry, 2010-2012 Lexus HS250h, and 2009-2010 Pontiac Vibe applications that call for a standard-size ring package. The ring construction focuses on reduced friction and oil control while supporting durable sealing performance under normal engine operating conditions. Mahle 42264 is a direct-fit choice for rebuild work where the original bore size remains standard.

What It Helps Address

• Oil consumption caused by worn or tired ring sealing.
• Compression loss from ring wear or reduced cylinder sealing.
• Excess friction from aged piston ring surfaces.
• Engine rebuild needs where standard-size rings are required.

Installation Notes

Confirm bore diameter, ring end gap, and groove dimensions before assembly. Match the ring set to the cylinder condition and follow the engine builder's installation and break-in procedures. This part cross-references OE-style applications for the same engine family.

Quality Assurance

Mahle develops piston rings to OE requirements, with an emphasis on lower friction, reduced oil use, and extended service life. Part number 42264 reflects that engineering focus for rebuild applications.