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Rebuilding a Cummins big cam engine? This piston ring set from Fortpro is exactly what you need. It's brand new, unopened, and comes in its original packaging—just like a professional parts supplier. Designed for Cummins NH855, NT855, and NTA855 engines, this set matches OEM part number 3803471 (Fortpro's number is F020402). Whether you're overhauling a truck, generator, or industrial engine, these rings help restore compression and reduce oil consumption. A must-have for any serious rebuild. Don't gamble with cheap seals—go with a set that matches the factory specs. Get your Cummins running like new again with these quality rings.
4.7 out of 5