Description
Piston rings are the critical seal between your pistons and cylinder walls—they control blowby, maintain combustion pressure, and directly impact horsepower retention and engine longevity. This OEM-spec ring set delivers the durability and precision fit required for both naturally aspirated and forced induction builds, with plasma moly coating for reduced friction and extended ring life. Whether you’re rebuilding a stock engine or pushing high boost, proper ring fitment is non-negotiable for reliable performance.
- Bore diameter: 4.135″
- Ring thickness: 1.0mm / 1.0mm / 2.0mm
- Plasma moly coated
- File fit required
- 8-cylinder kit
- Standard compression height
- MPN: 4140MS-112
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