MAHLE 3150005-045 Plasma-Moly Piston Ring Set 4.045" Bore File Fit Low Tension

The MAHLE 3150005-045 is a Plasma-Moly Performance Piston Ring Set designed for high-output street, racing, and marine applications. Featuring a 4.045" bore size (+.045" oversize) and ring widths of 1/16", 1/16", 3/16", this file-fit, low-tension ring set is constructed from carbon steel and delivers the precision and durability demanded by serious engine builders.

Key Features:

• Plasma-Moly top ring coating for superior wear resistance and reduced break-in time
• Barrel-faced top ring ensures instant break-in and maintains consistent contact with the cylinder wall as the piston rocks at TDC and BDC
• Napier THG (hook groove) second compression ring provides superior oil control by scraping the cylinder walls and creating an oil reservoir on each down stroke
• CP-20 oil control ring with exclusive 20-degree ear angle delivers maximum cylinder wall sealing
• File-fit design allows precise end gap tuning for specific application requirements
• Low-tension construction minimizes parasitic drag and supports maximum power output
• Carbon steel material for excellent strength and durability under high-stress conditions
• Suitable for street performance, racing, and marine engine applications

MAHLE's performance ring sets are engineered using advanced piston ring simulation and computer development tools to minimize friction and maximize sealing efficiency. The result is measurable power gains on the dyno and proven reliability on the track. This set is sold as a complete ring pack for one engine.