Description
MA6A – New top compression piston ring, replaces Cummins 3940777 (also 3902286, 3904531). For Cummins 4B / 6B series engines. Single ring. Match the part number before ordering.
Top Compression Piston Ring – Cummins 3940777 4B / 6B
$17.49
MA6A – New top compression piston ring, replaces Cummins 3940777 (also 3902286, 3904531). For Cummins 4B / 6B series engines. Single ring. Match the part number before ordering.
1 in stock
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Product identification
Products explicitly described as “Genuine OEM” are genuine original equipment manufacturer parts. Other references to OEM names, part numbers, or model numbers are provided to identify compatibility and do not imply that a product is OEM.
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