FUEL SYSTEM O-RING KIT for FORD PSD 1994-1997 7.3L
O-RING FAILURE SYMPTOMS:
Fuel Puddles in Engine Valley
Fuel Dripping Under Bell Housing
Un-burned Fuel Odors in Cab
The 1994 thru 1997 Ford 7.3L Powerstrokes did not have fuel system o-rings that were
compatible with Ultra Low Sulfur Diesel or even low concentrations of Bio-Diesel. The
actual life of the o-rings varies greatly and many may not have started to leak yet.
These new kits have Brown colored o-rings made of Viton which is resistant to ULSD
and Bio Diesel. We purchase all of our Viton o-rings in a Brown color so that we can
quickly know that we are shipping the correct ones. This is for your added protection.
This kit now includes an additional o-ring and a bolt kit. The bolts are small stainless
steel Allen heads to replace the factory Phillips head machine screws on the side of the
You may find a web site that talks about the "3rd o-ring" for the drain valve shaft.
This o-ring is NOT exposed to pressurized fuel and cannot leak unless:
1. The valve is open and the engine is running (not advisable).
2. One of the other 2 drain valve o-rings has failed.
Anytime plastic is exposed to fuel and heat it becomes brittle and taking apart the
drain valve to get at the shaft o-ring can be risky. Ford did not include this o-ring in
their kit for these reasons.
As of 12-14-09 we will include the shaft o-ring in all of our kits at NO extra charge.
You can decide if you want risk taking the drain valve apart and possibly damaging
the valve itself. If you have purchased an o-ring kit from us in the past and want a free drain valve
shaft o-ring send bernie an email, be sure to include your customer number or order