TYPICAL APPLICATIONS:

• GM 1990-1988 V6, 3.8, 231, C
• GM 1988-1985 V8, 5.0, 305, F
• GM 1997-1988 V8, 5.8, 351, H
• GM 2001-1997 V8, 5.4, 329, L
• GM 1996-1985 V8, 5.0, 302, N
• GM 1998 V8, 5.4, 329, M
• GM 1998-1997 V8, 5.4, 329, M, CNG
• GM 1991-1986 V8, 5.0, 302, N
• GM 1995-1993 V8, 5.8, 351, R
• GM 2001-1997 V8, 4.6, 281, W
• GM 2001-2000 V8, 5.4, 329, Z, FLEX
• GM 2001-1999 V8, 5.4, 329, 3
• GM 1998-1997 V8, 4.6, 281, 6
• GM 1997-1991 V8, 7.0, 429
• Replaces: Bosch 0280150209, 0280150217, 0280150222, 0280150227, 0280150235, 0280150238, 0280150711, 0280150901, 0280150909, 0280150939, 0280150943, 
• Replaces: Ford E5TE-9F593-A1B, E5TE-9F593-A2B, E5TZ-9F593-AB, E6TE-9F593-A1B, E6TE-9F593-A2B, E6TE-9F593-A3B, E6ZZ-9F593-A, F0TE-9F593-B1A

Top feed disc injectors use a small disc with six holes around its circumference. The disc rests on a short chimney that surrounds a metering hole. As the disc is raised off the chimney by magnetic force, fuel flows through the holes in the disc, over the walls of the chimney, and out the metering hole to form a full, finely atomized cone.

Performance advantages over pintle injectors (i.e. Ford / Bosch & Accel types) as listed by Delphi:
• The flat mating surface ensures that no excess fuel is present to evaporate and therefore, no deposits or clogging can occur.
• Compatible with alternative fuels (i.e. E85, Methanol) 
• Longer service life
• High-speed disc action allows wider dynamic flow range for improved idling
• Quieter operation
• Revolutionary disc design resists build up deposits which can affect fuel flow.
• No Fuel leakage for quicker starts