Warranty & Shipping
Product Reviews
Vehicle Fit

Part Details

  • Quantity:   8 Piece Set



  • Motorcraft Spark Plugs
  • Comes as a SET of 8
  • Stock #: SP515, SP546
  • Updated design by Ford to reduce the risk of breaking off during removal

Our electrical and electronic parts are subject to strict quality control testing. Please ensure proper diagnosis of this item before purchasing as the item cannot be returned once installed or plugged in.

Item Condition: New

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

4.57/ 5.0
7 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Referenced the Wrong Plugs
Plugs were ordered based on the information provided. A call was made to verify that the correct plugs were ordered. We were told that youg on-line reference was incorrect and the plugs we ordered were for the 5.0 not the 4.6 V8. Plugs were graciously canceled before they were shipped. We purchased the correct plugs locally.
February 6, 2018
Replacement Parts Support
I ordered a set of spark plugs, and after about a week and a half called 1A auto bout them (the USPO tracking number would not work). Evidently they were lost int the mail and 1A Auto quickly rushed me another set (at no cost) which saved my bacon and got the F-150 running again. Thanks 1A Auto for your great customer support. After another two weeks the original order arrived which is now being returned.
June 7, 2018
Fit as expected
Was the perfect direct fit. Should add i got lucky and didnt break any. I like to put a thin coat of anti seize on threads to help with extraction.
June 25, 2018
Plugs & Coils
Time to change spark plugs in my 2005 Ford F-150.1A Auto had the motorcraft plugs that my truck uses(per manufacture).Got a really great price on them,would of spent almost $25 more at the auto part store.Thank you a1auto for the savings.Had a bad coil,changed them all out cause again couldn’t pass up the savings this company offers.Cahanged all 8 coils and saved over &140 on these parts compared to the auto part store.Truck runs great and again have a smooth ride,give these guys a try.A very satisfied customer,and I highly recommend this company for your automotive parts needs.Thank you for the fast delivery service a1auto.
July 22, 2018
Excellent quality and service
Ford F150 5.4 Triton shudder bad a 100 rpm approx. 45 mph. Purchased 8 Motorcraft Spark Plugs and 8 TRQ coils and the shudder and skip is completely gone. Truck runs like new. Thank you very much 1A Auto. Your parts are top quality and save me ton of money.
September 19, 2018
These were exactly what I was looking for! Way cheaper than the dealer and genuine ford product.
October 13, 2018
Replacement parts
Prices are very competitive if not cheaper and has a quick delivery.
October 25, 2018
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Do I need a special tool to remove the spark plugs?
Jeff P October 10, 2016
Darryl H October 10, 2016
Yes there is an extraction tool. The metal sleeve around the eletctrode is pressed on and it tends to stay in the head when you pull the plug out. This tool will tap threads into the sleeve then you thread another piece in to pull the sleeve out. i have switch to champion 7989 plugs because they are a one piece plug and will not come apart
Kenneth J October 11, 2016
my 2005 f150 5.4l has the SP515 plug. can I replace them with the SP546?
David T August 12, 2018
Hi David, The Sp515 spark plugs and is a great upgrade to previous spark plugs out there. The key thing with the 5.4 is to change out the plugs the engine needs to be cold because I of the aluminum heads. Put ati-seaze on the plugs and you will have no issues. My customers have have better gas mileage using this spug. Hope this answers your question.
Travis H August 12, 2018
Year Make Model Description
2005-2008Ford Expedition Ford Expedition Spark Plug 8 Piece Set Motorcraft SP515, SP546
2004-2008Ford F150 Truck Ford F150 Truck Spark Plug 8 Piece Set V8 4.6L Motorcraft SP515, SP546
2004-2008Ford F150 Truck Ford F150 Truck Spark Plug 8 Piece Set V8 5.4L Motorcraft SP515, SP546
2005-2008Ford F250 Super Duty Truck Ford F250 Super Duty Truck Spark Plug 8 Piece Set V8 5.4L Motorcraft SP515, SP546
2005-2008Ford F350 Super Duty Truck Ford F350 Super Duty Truck Spark Plug 8 Piece Set V8 5.4L Motorcraft SP515, SP546
2005-2008Lincoln Navigator Lincoln Navigator Spark Plug 8 Piece Set Motorcraft SP515, SP546
2006-2008Mercury Mountaineer Mercury Mountaineer Spark Plug 8 Piece Set V8 4.6L Motorcraft SP515, SP546
Part #: MCETK00001

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

Brand #: SP515, SP546