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International Automotive Technicians Network
Re: Ford ignition coil
Posted to Technical Discussion Forum on 7/12/2025

If you look it up on the Ford parts site there is a production date break.

The 521 is 2007-2008

The 511 is: With Black Coil Boots, 06/02/2003 - 12/01/2007

Get rid of the quotes to see the link:

"[...] ignition-coil-p-dg521?pdp=y" Login to read more.