- About This Product
DescriptionThe 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
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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.