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Autolite introduces the Revolution HT2 spark plugs for High Horsepower Naturally Aspirated Mustang GT's from 2005-2008! Will also fit 2004-2007 F150 5.4L. Specifically designed to be a single heat range
hotter than the factory plugs, these are perfect for high horsepower naturally aspirated combinations with high compression, that need a warmer cylinder combustion. These are designed one heat range hotter than the
factory spark plugs. This is the factory heat range for 2005-2006 F150 5.4L. These plugs are 10mm in thread design. Factory gap is at .045" (Mustang), gap may vary per application contact us for exact specifications.
These Autolite Revolution HT spark plugs are designed to provide more space for additional intake valve and unobstructed intake ports. They will enhance power and create more efficient airflow without increasing the engine's size. The Revolution HT spark plugs from Autolite feature a 10mm high-thread design that can maintain the same dielectric, mechanical, and durability characteristics associated with conventional 14mm spark plugs. When doing a tuneup on your engine, use these Autolite Revolution HT spark plugs to get the job done.
Unique High Thread Design for:
More Power
Superior Cylinder Head Seating Postion
Better Compressive Seal
Improved Heat Transfer
More Focused Ignition
More Durability
Longer Service Life
Improved Corrosion Protection
Requires 9/16 in. Socket Wrench
*Will fit early design cylinder heads from 2005-2008. Will not fit Mustang GT's with NEWER 12mm threaded spark plugs from 2008.5-2009. Note: 2008 Models, we have seen both spark plug designs
on the same year. Please verify the design of your spak plug before purchase, or call a Tillman Speed sales representative for more details.
*2005-2006 F150 5.4L's - This is the stock heat range plug, for one step colder use Autolite HT1. For 2004 F150 5.4L's, this is a one step hotter plug. HT1's are your factory heat range plugs.
Compatible Vehicles
- Ford 04-07 F-Series (5.4L 24V)
- Ford 2005-2009 Mustang GT
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