2005-2014 Mustang Spark Plug Gap Specs

When performing a tune-up on your 2005-2014 Ford Mustang, one of the most common and important maintenance steps is replacing the spark plugs. Ensuring the spark plugs are properly gapped is essential for your engine to run smoothly, as incorrect gaps can cause misfires, rough idling, or even prevent the engine from starting. The spark plug gap is the space between the center and ground electrodes, and it must align with your Mustang’s engine specs to achieve efficient combustion. A basic spark plug gap tool, available at most auto parts stores, can be used to measure and adjust the gap as needed. Below, you’ll find a quick reference guide to help you determine the correct spark plug gap for your S197 Mustang based on the engine type. Don’t forget to check out our full selection of spark plugs for all 2005-2009 and 2010-2014 Mustangs!

2005-2014 Ford Mustang Spark Plug Gap Chart

Year	V6-3.7L	V8-4.6L	V8-5.0L	V8-5.4L	V8-5.8L
2005	.052-.056in	.045in +/- 0.005in (Black Coil Boot)
2006	.052-.056in	.045in +/- 0.005in (Black Coil Boot)
2007	.052-.056in	.045in +/- 0.005in (Black Coil Boot)		.033-.037in
2008	.052-.056in	.045in +/- 0.005in (Black Coil Boot) .041in +/- 0.002in (Brown Coil Boot)		.033-.037in
2009	.052-.056in	.041in +/- 0.002in (Brown Coil Boot)		.033-.037in
2010	.052-.056in	.041in +/- 0.002in (Brown Coil Boot)		.033-.037in
2011	.049-.053in		.049-.053in
2012	.049-.053in		.049-.053in
2013	.049-.053in		.049-.053in		.033-.037in
2014	.049-.053in		.049-.053in		.033-.037in

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