Sealing o-ring for high pressure oil rail plugs end plugs. There are two oil rail plugs on each head. This is the special o-ring/seal for these plugs. Each plug requires 1 o-ring/seal. The package contains 1 seal.
Genuine Navistar OEM seals.
For model years 1994-2003 7.3L diesel engines. Instructions included.
The seals on the oil rail plug has been upgraded to a single piece. The old style seal required 2 o-rings of different size and was prone to leakage.