Piston Ring Set 4.170 1.5 1.5 3.0mm

The Piston Ring Set 4.170 1.5 1.5 3.0mm from MAHLE PISTONS is a precision-engineered component designed for serious engine builders and high-performance automotive enthusiasts tackling custom or racing engine builds. When you're assembling or rebuilding a 4.170-inch bore engine, selecting the right ring set is fundamental to compression integrity, blow-by control, and long-term durability. This file-fit ring set delivers the exacting tolerances and material quality that professionals rely on when performance and reliability cannot be compromised.

Manufactured in ductile iron with plasma moly coatings, the Piston Ring Set 4.170 1.5 1.5 3.0mm combines proven metallurgy with advanced surface treatment to reduce friction and extend ring life under demanding conditions. The ring configuration—1.5mm top ring, 1.5mm second ring, and 3.0mm oil control ring—provides optimal balance between sealing efficiency and oil management in eight-cylinder applications. Plasma moly coating protects against scuffing during initial startup and break-in, while ductile iron construction maintains dimensional stability across temperature cycles. Standard tension characteristics ensure proper seating without excessive drag, making this set suitable for naturally aspirated and forced-induction engines alike.

Engine builders, machine shops, and dedicated gearheads who require file-fit rings for precision piston packages will find this MAHLE set indispensable when specifications demand exact bore matching and custom fitment. Installation requires proper ring gap measurement and piston groove clearance verification—critical steps that separate professional assembly from guesswork. Whether you are building a street performance engine, race-prep platform, or restoring a classic with modern reliability, the Piston Ring Set 4.170 1.5 1.5 3.0mm delivers the engineering integrity and material consistency that defines MAHLE's reputation in the industry.