NGK 59021 direct ignition coil boot for the 2008-2014 Mercedes-Benz C63 AMG V8 6.3L and other vehicles links the ignition coil to the spark plug. It is built to stringent OEM tolerances for original equipment fit and design.
A misfire or rough idle can mean a boot has worn out, though the ignition coil or the spark plug may be behind it, so find out which before you buy. The 2008-2014 Mercedes-Benz C63 AMG V8 6.3L takes eight.
The vehicles it fits include the 2011-2014 Mercedes-Benz SLS AMG V8 6.3L and the 2009-2012 Mercedes-Benz SL63 AMG V8 6.3L. Open the "Vehicles it fits" section to check your exact model and engine.
Fit and size
Build and materials
Interchange: CPB-EU020
This part cross-references / interchanges with the following part numbers:
Does the NGK 59021 boot fit the 2008-2014 Mercedes-Benz C63 AMG V8 6.3L?
Yes, NGK 59021 fits the 2008-2014 Mercedes-Benz C63 AMG V8 6.3L, which takes eight boots.
Is the NGK 59021 boot made of silicone?
Yes, NGK 59021 is a silicone boot with internal springs and ferrite resistors that suppress RFI noise.
Should I replace the coil boots when changing spark plugs?
Yes. Replacing the boots at the same time as the spark plugs helps prevent ignition problems such as flashover.
Is NGK CPB-EU020 the same boot as 59021?
Yes, NGK lists this direct ignition coil boot under both 59021 and CPB-EU020, so either number finds it.
What warranty comes with this NGK coil boot?
NGK covers this boot with a limited lifetime warranty; the package has the details.
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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.
