Set of 6 of 7mm to 9mm copper sleeves for Dodge Cummins 5.9L engines. CUMMINS 6 BTA 12 VALVES. 1989 to early 1991 non-intercooled trucks or trucks that have had the cylinder head replaced with a unit with 9mm injector bores will require these adapter sleeves for installation of BOSCH Prince of Darkness 50hp Injectors.
