MAHLE Support Rail

The MAHLE Support Rail is a piston ring support rail (also called an oil ring expander or oil ring support rail) designed for use with multi-piece oil control ring sets in performance and engine rebuild applications. It works together with the oil ring rails to help control oil on the cylinder wall and keep the rings seated against the bore.

Key Features:

• Supports the oil ring rails and keeps them in contact with the cylinder wall
• Helps with oil control and ring sealing in a rebuilt or performance engine
• Made by MAHLE, a well-known OE supplier of pistons, rings and engine components
• Available in multiple bore ranges and widths so you can match the rail to your piston and ring package

Choose the variant that matches your piston ring set's bore and ring width specification. Check the individual part number listing for exact specifications.