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

16,620

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 6,950
#2 dandyoun
dandyoun
Reputation 4,180
#3 tennisshoes
tennisshoes
Reputation 2,510
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,287 Great Deals out of 155,182 listings starting at $1,395
Used GMC Sierra 1500
937 Great Deals out of 62,257 listings starting at $1,395
Used Dodge Ram 1500
530 Great Deals out of 12,822 listings starting at $1,995
Used Ford F-250 Super Duty
395 Great Deals out of 45,058 listings starting at $2,000
Used Toyota Tundra
584 Great Deals out of 30,718 listings starting at $2,637
Used Toyota Tacoma
616 Great Deals out of 35,102 listings starting at $2,155
Used Ford Mustang
362 Great Deals out of 44,353 listings starting at $1,000
Used Nissan Titan
222 Great Deals out of 16,972 listings starting at $3,999
Used Ford Explorer
935 Great Deals out of 73,729 listings starting at $750
Used Chevrolet Tahoe
775 Great Deals out of 28,448 listings starting at $1,500
Used Chevrolet Colorado
264 Great Deals out of 19,416 listings starting at $1,995
Used Ford Ranger
203 Great Deals out of 6,718 listings starting at $1,450
Used Jeep Wrangler
393 Great Deals out of 19,082 listings starting at $3,000

Used Cars For Sale

2017 Ford F-150 For Sale
4 Great Deals out of 103,479 listings starting at $18,199
2016 Ford F-150 For Sale
154 Great Deals out of 41,654 listings starting at $16,995
2015 Ford F-150 For Sale
197 Great Deals out of 7,256 listings starting at $17,480
2014 Ford F-150 For Sale
431 Great Deals out of 11,727 listings starting at $10,700