100 years of OE experience, supplier to the world's top automakers, OE Heritage and knowledge built into every aftermarket part. Product Features:100% O-ring replacementAll Delphi injectors are tested utilizing OE methodologiesDelphi injectors are produced in a Delphi ISO 9001:2008 certified facilityNo internal seal rings equals minimized leakageRecessed fuel exit minimizing possible pluggingReduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilitiesThermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock