View Full Version : What spark plugs

October 8th, 2019, 04:22 PM
99 f250 with a 03 5.4 motor.. i know the 5.4 motors are picky on plugs and i know autolite or motorcraft but single or double platinum? My old motor had double and the 03 has double but was told to stick with single

October 8th, 2019, 09:07 PM
Motorcraft SP479. Do not use antiseize, torque them to 28 ft/lb.