2003 F150 4.6 v8

Asked by Mar 07, 2015 at 06:49 AM about the 2003 Ford F-150 XLT Crew Cab SB

Question type: Maintenance & Repair

What is the spark plug thread count in the head on this year 150?  Lots of confusing information on the INET about plugs blowing out.  One said the threads in the head went from 4 to 8 in the middle of the 2003 run.

1 Answer

17,190

If the heads on your vehicle are aluminum there is a changing procedure for the plugs. Run the engine until hot, then let it cool down until you can feel it warn with your hand but not cold. You may be able to get the correct plug by vin number. I believe the engine code on the vin is the 8th position, usually a letter.

Your Answer

Add photo

Related Questions

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,210
#2 dandyoun
dandyoun
Reputation 4,260
#3 tennisshoes
tennisshoes
Reputation 2,590
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,952 Great Deals out of 159,903 listings starting at $1,995
Used GMC Sierra 1500
876 Great Deals out of 64,409 listings starting at $1,500
Used Dodge Ram 1500
427 Great Deals out of 11,401 listings starting at $700
Used Ford F-250 Super Duty
378 Great Deals out of 47,659 listings starting at $400
Used Toyota Tundra
511 Great Deals out of 32,114 listings starting at $2,995
Used Toyota Tacoma
531 Great Deals out of 37,484 listings starting at $2,950
Used Ford Mustang
316 Great Deals out of 45,523 listings starting at $2,000
Used Nissan Titan
224 Great Deals out of 18,089 listings starting at $3,799
Used Ford Explorer
735 Great Deals out of 74,284 listings starting at $750
Used Chevrolet Tahoe
600 Great Deals out of 27,562 listings starting at $600
Used Chevrolet Colorado
220 Great Deals out of 22,251 listings starting at $2,000
Used Ford Ranger
177 Great Deals out of 6,201 listings starting at $1,300
Used Chevrolet Silverado 2500HD
328 Great Deals out of 26,371 listings starting at $2,500

Used Cars For Sale

2017 Ford F-150 For Sale
3 Great Deals out of 116,980 listings starting at $18,299
2016 Ford F-150 For Sale
154 Great Deals out of 29,152 listings starting at $17,877
2015 Ford F-150 For Sale
194 Great Deals out of 7,230 listings starting at $11,600
2014 Ford F-150 For Sale
439 Great Deals out of 12,254 listings starting at $9,995