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The Mahle MS piston ring support rails are 4.155-inch, 3.0mm oil ring rails supplied as a 16-piece set of standard-tension rails. These support rails fit into multi-piece ring assemblies to control oil scraping and distribution on compatible pistons, providing proper ring seating and consistent oil control during engine operation when matched to the specified bore and ring package.
Mahle MS 4.155in 3.0MM Oil Ring Rails
