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

16,080

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

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,700
#2 dandyoun
dandyoun
Reputation 4,130
#3 tennisshoes
tennisshoes
Reputation 2,470
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,597 Great Deals out of 151,931 listings starting at $1,500
Used GMC Sierra 1500
998 Great Deals out of 60,141 listings starting at $1,299
Used Dodge Ram 1500
532 Great Deals out of 13,075 listings starting at $1,800
Used Ford F-250 Super Duty
465 Great Deals out of 43,219 listings starting at $2,195
Used Toyota Tundra
684 Great Deals out of 28,145 listings starting at $2,798
Used Toyota Tacoma
731 Great Deals out of 31,912 listings starting at $2,750
Used Ford Mustang
573 Great Deals out of 42,796 listings starting at $1,699
Used Ford Explorer
1,137 Great Deals out of 71,754 listings starting at $799
Used Nissan Titan
254 Great Deals out of 15,809 listings starting at $3,000
Used Chevrolet Tahoe
884 Great Deals out of 28,086 listings starting at $1,700
Used Ford Ranger
216 Great Deals out of 6,862 listings starting at $1,595
Used Chevrolet Colorado
315 Great Deals out of 17,877 listings starting at $1,995
Used Jeep Wrangler
527 Great Deals out of 18,438 listings starting at $2,900

Used Cars For Sale

2017 Ford F-150 For Sale
3 Great Deals out of 81,514 listings starting at $17,710
2016 Ford F-150 For Sale
189 Great Deals out of 58,030 listings starting at $4,922
2015 Ford F-150 For Sale
221 Great Deals out of 7,508 listings starting at $18,296
2014 Ford F-150 For Sale
500 Great Deals out of 11,476 listings starting at $12,457
2013 Ford F-150 For Sale
673 Great Deals out of 14,075 listings starting at $8,450