MAHLE 3150064-035 Performance Piston Ring Set +0.035 Oversize File Fit

The MAHLE 3150064-035 is a precision-ground performance piston ring set designed for high-output and racing engines. With a +0.035" oversize bore specification, this file-fit ring set is engineered for builders who demand the tightest tolerances and maximum sealing performance during engine assembly.

Key Features:

• HV385 Thermal Spray Top Ring: Steel top ring features MAHLE's patented HV385 supersonic thermal-spray coating — a proprietary blend of hard, self-lubricating metal and ceramic alloys — delivering superior bonding, increased durability, and outstanding scuff resistance against cylinder walls
• Napier THG Second Ring: The tapered hook groove (THG) second compression ring acts as a check valve to relieve combustion pressure build-up beneath the top ring, providing superior oil control, improved combustion gas management, improved top ring stability, and a tighter combustion seal
• CP-20 Oil Control Ring: MAHLE's industry-leading CP-20 oil ring, named for its 20-degree ear angle, delivers the absolute best cylinder wall seal and oil control available in a performance application
• File-Fit Design: Rings are supplied with additional material at the end gaps, allowing engine builders to custom-fit end gaps to exact specifications for the application
• Precision-Ground Flanks: Ultra-flat ring flanks maximize ring-to-piston groove sealing for reduced blow-by and improved compression retention
• +0.035" Oversize: Engineered for bores that have been machined 0.035" over standard diameter, ensuring proper radial wall tension and cylinder wall contact

MAHLE is the world's largest piston ring manufacturer, with over a century of experience supplying OE and aftermarket ring sets to the majority of the world's engine manufacturers. The 3150064-035 reflects that same engineering excellence, making it the preferred choice for professional engine rebuilders, performance shops, and serious motorsport enthusiasts.