INJECTOR RETURN CHECK VALVE - CUMMINS ('03-'07, 5.9L)
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INJECTOR RETURN CHECK VALVE - CUMMINS ('03-'07, 5.9L)

Item #: 3957290
Qty.
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Description

The injector return check valve located on the back of the cylinder head can leak fuel after it gets some time on it. We offer the Cummins 3957290 replacement part to fix this problem.

To install this check valve you will need two gaskets:

  • 12MM gasket
  • 14MM gasket
See below to add to your order.

Reviews

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Fuel leak repair
Jan 1, 2018  |  By Henry
The root cause of my fuel injector return leak. Make sure you order the 12mm and 14mm gasket/washer to do the job right.

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