Mahle MS 4.125in+.005in .043in 1.5mm 3.0mm File Fit Rings

The Mahle MS 4.125in+.005in .043in 1.5mm 3.0mm File Fit Rings are precision-engineered piston rings designed for optimal sealing and performance in high-performance engines. Constructed with durable materials, these file fit rings feature a 4.125-inch bore size with a +0.005-inch gap, a .043-inch thickness, and specific 1.5mm and 3.0mm dimensions to ensure proper fitment. They are engineered to provide excellent oil control, compression sealing, and durability under demanding conditions, making them suitable for both street and racing applications. The design emphasizes precision and reliability, ensuring consistent engine performance and longevity.

These file fit rings are compatible with engines requiring a 4.125-inch bore size and are suitable for various performance builds. They serve as direct replacements or upgrades for stock piston rings in engines with similar specifications. Ideal for rebuilds, performance upgrades, or custom engine projects, these rings are designed for use in engines that operate across a broad range of conditions. Installation involves filing to achieve the perfect gap, ensuring a secure fit and optimal sealing. They are suitable for use in high-performance, street, and track applications where precise sealing and durability are critical.