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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
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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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