Regular Maintenance. Replacing your old weak spark plugs is paramount to keep your engine running smoothly and efficiently, so why replace them with the same old sub-par stock plugs when high performance plugs from NGK will improve fuel efficiency and lower your emissions.
Superior Construction. NGK Laser Platinum Performance Spark Plugs feature an platinum disk that is welded on the center electrode and a platinum disk that is welded on the ground electrode to reduce the wear rate of both surfaces ensuring greater durability and longer life. NGK uses pinpoint precision laser welds to reduce excess debris decreasing the required voltage to bridge the spark gap for a more efficient burn.
Application. This set of NGK Laser Platinum Performance Spark Plugs are specifically designed as a direct fit replacement for the following engines:
2009-2010 4.6L 3V & 5.4L - NGK Part# PZNAR6A11H
2010 4.6L 2V - NGK Part# PTR5F-11
2011-2014 3.7L - NGK Part# LTR6BP13
4.6L Application Note. To determine what version of the 4.6L is in your truck, you would need to refer to your VIN number. If the 8th digit in the VIN # is "W" it is the 4.6L 2V. If the 8th digit in the VIN # is "8" it is the 4.6L 3V.
I am going to change my plugs in my 2010 F150- 4.6L (3V) and am thinking about going with the NGK plug PTR5F-11 ( which is for the 2- valve since it is a colder plug
the reasoning is that I am running 89 Octane instead of the OE 87 octane, and I have been having black, unburned exhaust for actually, more than 100k miles. Incidently, Ive had the black exhaust powder in my exhaust LONG before I switched to 89 (Ethenol- FREE)
The NGK Laser Platinum Spark Plugs PTR5F-11 Will work with the 3v without issue, and may help with the issues you are having. We do not foresee any issues with these plugs on your truck.