Series 60 Fuel Return Check Valve

The purpose of the check valve is to reduce the risk of fuel prime loss and fuel siphoning from the head when the fuel filter is removed.

2 Replies to “Series 60 Fuel Return Check Valve”

  1. Remove dog house from floor pan, a 3/4 wrench, 15/16 wrench, and a 7/8 wrench are required. Ck valve is located on back of cyl head, it’s a small stainless steel valve with a direction arrow, Detroit diesel logo and part number is 23516918 274399c. Oem part is around $250-$350. Aftermarket around $60. Teflon tape recommend on threads upon installation.

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