NGK 58908 direct ignition coil boot for the 2007-2012 Ford Mustang V8 5.4L, the 2013-2014 Mustang V8 5.8L and other vehicles connects the ignition coil to the spark plug. It is built to stringent OEM tolerances.
A cracked or damaged boot, or a misfire from spark leaking along the boot (flashover), can mean a boot is wearing out. A misfire alone does not prove the boot is at fault, since a worn spark plug is another common source.
Besides those cars, this coil boot fits the 2005-2006 Ford GT V8 5.4L and the 2003-2005 Lincoln Aviator V8 4.6L.
One direct ignition coil boot. This listing holds a single boot, and a full engine set is eight.
Interchange: 50034-1 · 35-7013 · 671-8155 · 36-2017 · CPB-FD002
50034 · SPB109 · 702420 · 727420 · 02529 · 2529 · 128042 · SPP46 · SPP46E
This part cross-references / interchanges with the following part numbers:
Does the NGK 58908 coil boot fit the 2007-2012 Ford Mustang V8 5.4L?
Yes. NGK 58908 fits the 2007-2012 Ford Mustang V8 5.4L and the 2013-2014 Mustang V8 5.8L, among other vehicles. For a different car, look it up in the "Vehicles it fits" section.
What is the NGK 58908 coil boot made of?
It is made of silicone. NGK 58908 also includes the required internal springs and ferrite resistors for RFI noise suppression.
Is CPB-FD002 the same part as NGK 58908?
Yes. NGK lists this coil boot under both 58908 and CPB-FD002, so a search for either number points to the same part.
How can I tell when a direct ignition coil boot is wearing out?
With the engine off and cool, look for cracks or damage on the boot. A misfire can also be a sign, and a shop can test the ignition if you are unsure.
Should I change the 58908 boots when I replace my spark plugs?
Yes. Changing the NGK 58908 boots along with the plugs helps head off flashover and other ignition problems between the coil and the plug.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
