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Mahle piston rings for Cummins B 5.9L (+020) diesel applications, supplied per one cylinder and listed to fit a 4.035" bore. These rings provide correct sizing for +020 oversize bores and are offered as OEM-quality replacement components for engine rebuilding. The overview focuses on correct fitment for the specified Cummins B 5.9L (+020) diesel application without implying material or performance claims beyond the source data.
Mahle MS Cummins B 5.9L (+020) Diesel Ring 1 cyl
