Mahle Rings Performance Napier THM-13 4.105 x 1.0MM 136in RW Plain Ring Set

These Mahle OE piston rings feature a 4.105 inch bore size and a 1.0mm thickness, designed for performance applications. The Napier hook design on the second ring helps to improve oil control and reduce blow-by, which is crucial for maintaining engine compression and power.

Built with durable materials, this plain ring set is intended to provide reliable sealing between the piston and cylinder wall. Proper ring seal is essential for efficient combustion, preventing oil from entering the combustion chamber and exhaust gases from escaping past the piston. This helps ensure optimal engine performance and longevity.

This ring set is a solid option for engine rebuilds where precise fitment and dependable sealing are required. Always refer to your vehicle's service manual for specific installation procedures and torque specifications.