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Our offices are closed for Thanksgiving. Orders placed online will be processed on Monday 12/1/2025.

Our offices are closed for Thanksgiving. Orders placed online will be processed on Monday 12/1/2025.

Cummins ISB and QSB Valve Train Components

Cummins ISB/QSB Valve Train Components

We sell valve train components, including exhaust valve springs and valve kits, for Cummins ISB and QSB engines. You can easily access our inventory by visiting the product links listed below.

If you do not see the part you are looking for, please use our quote request form or call us at 888.687.0539: our knowledgeable sales staff will gladly help you.


VALVE STEM SEAL - ISB

Genuine Cummins Part

$56.40

PUSH ROD - 4B3.9 / 6B5.9 / ISB / ISD

$10.31

INTAKE VALVE KIT - ISB / QSB

$14.47

EXHAUST VALVE KIT - ISB

$12.98

VALVE TAPPET - 4BT / 6BT / ISB

$9.63

VALVE TAPPET - ISB / QSB (LIFTER)

$21.56

VALVE STEM SEAL - ISB / QSB

$1.79

VALVE STEM SEAL - ISB

$2.22

EXHAUST VALVE KIT - QSB5.9

$50.84

ROCKER LEVER HOUSING COVER GASKET - ISB / QSB

$21.89

EXHAUST VALVE KIT - ISB

$30.56