Cummins 4BT/6BT Piston Ring Sets
We carry piston ring sets for Cummins 3.9 and 5.9 liter engines. For your convenience, you can access our inventory through the product links listed below.
If you do not see the B Series part you need, please use our quote request form or call us at 855.470.3525 : our friendly sales staff will gladly help you.
PISTON RING SET - 4B3.9 / B4.5 / B5.9 (.50 MM O/S)
Genuine Cummins Part
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PISTON RING SET - B SERIES / ISB (STANDARD)
Genuine Cummins Part
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Ships in 3-4 days
PISTON RING SET - ISB / QSB
Genuine Cummins Part
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Special Order
PISTON RING SET - 6B5.9 / ISB6.7 / NT855 / QSB5.9
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PISTON RING SET - B SERIES (STANDARD NATURAL)
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Ships in 1-2 days
PISTON RING SET - B SERIES (.50 MM OVERSIZE, NATURAL)
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PISTON RING SET - B SERIES (1.00 MM OVERSIZE, NATURAL)
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Ships in 1-2 days
PISTON RING SET - 6B5.9 (.50 MM OVERSIZE)
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Ships in 1-2 days
PISTON RING SET - 6B5.9 (1.00 MM OVERSIZE, TURBOCHARGED)
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PISTON RING SET - 855 (STANDARD, TURBOCHARGED)
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PISTON RING SET - 6B5.9 (.50 MM OVERSIZE, TURBOCHARGED)
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PISTON RING SET - 6B5.9 (1.00 MM OVERSIZE, TURBOCHARGED)
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Ships in 1-2 days
PISTON RING - 6B5.9 (SET STANDARD, TURBOCHARGED)
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PISTON RING SET - B SERIES (.020 OVERSIZE)
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PISTON RING SET - B SERIES (.040 OVERSIZE)
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Ships in 1-2 days
PISTON RING SET (STANDARD) - 4B3.9 / 6B5.9 / ISB / ISD
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Ships in 1-2 days
PISTON RING SET (1.00MM OVERSIZE) - 4B3.9 / 6B5.9
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PISTON RING SET (.050 OVERSIZE) - 4B3.9 / 6B5.9 / ISB
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