Feature: Application-- All item Works With All 6.0L Oil Rails - 2003-2007 Nipple Cup--Made of hardened tool grade steel & Leakproof design &Deflection groove diverts any oil that leaks past the Nipple Cup Seal harmlessly away from the top Injector seal& Better than OEM. O-Rings--Our ball tube o-rings are made from a higher temperature Viton material to prevent repeat failure. No mold lines to compromise your seal And perfect fit for the opening seat. .
