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Ford Truck Club Forum > FORD F-250 | F-350 SERIES | SUPER DUTY > 1999-2007 Ford F250 | F350

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Old October 8th, 2019, 04:22 PM
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Jrp79 Jrp79 is offline

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Default What spark plugs

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

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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