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Piston Ring Set Cummins 3802040 | 380204000, CU3802040, 3804930

Manufacturer: Cummins
Part#: 3802040
Cross References:
Price on request
Available to order

Restore optimal engine compression and oil control with this high-quality standard (STD) piston ring set for Cummins 4B 3.9 and 6B 5.9 non-turbo engines.

Description

High-Performance Piston Ring Set for Cummins B-Series Engines

Ensure maximum combustion efficiency and prevent oil blow-by with this premium standard (STD) piston ring set designed for Cummins 4B 3.9 and 6B 5.9 naturally aspirated (non-turbo) diesel engines. Engineered to meet rigorous heavy-duty standards, this set provides an exceptional seal, reducing friction and extending the service life of your engine block and pistons.

Key Features & Benefits

  • Perfect Fitment: Designed specifically for Cummins B-series engines (4B 3.9L and 6B 5.9L) without turbochargers.
  • Optimal Sealing: Restores cylinder compression and prevents combustion gases from entering the crankcase.
  • Durable Construction: Manufactured from high-grade materials to withstand extreme thermal and mechanical stress.
  • Standard Size (STD): Engineered for standard 102.00 mm cylinder bores.

Technical Specifications

  • Cylinder Diameter (STD): 102.00 mm
  • Top Ring (I): 2.38 mm R
  • Second Ring (II): 2.38 mm R
  • Oil Control Ring (III): 3.00 mm DSF-CR

Compatible Engine Models

  • Cummins 4B 3.9 (Naturally Aspirated / Non-Turbo)
  • Cummins 6B 5.9 (Naturally Aspirated / Non-Turbo)