1994-03 7.3L Ford Powerstroke Diesel Glow Plug Set of 8. Replaces:F4TZ-12A342-BA Set of 8 Glow Plugs 100 degrees Hotter & 20% Faster than stock OEM. Replaces Part Numbers: DRX00138, ZD11, 1111, F4TZ-12A342-BA