Ford 6.9L & 7.3L IDI Diesel Injector Return Cap O-Ring (viton) 1983-1994 Go to amazon.com Related posts Top 7.3 injectors idi for 2022 Feature1 SET OF 16 INJECTOR RETURN LINE CAP ORINGSFITS 6.9 AND 7.3 IDI ENGINE FROM 1984 TO 1994VITON ORINGS Description1 SET OF 16 INJECTOR RETURN LINE CAP ORINGS FITS 6.9 AND 7.3 IDI ENGINE FROM 1984 TO 1994 VITON ORINGS