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Review on πŸ”₯ ACDelco D503A Professional Ignition Coil by Donald Waller

Revainrating 5 out of 5

Replacement parts worth every penny

I did a full tune up, ACDelco cover, rotor, wire and connector and ignition control module. After replacing my intake gaskets (also OEM) I installed the timing and had some issues with the RPM being erratic while driving, stopping when I got somewhere and putting it in park. Ignition coil replaced, problem solved. Upon closer inspection, I found that my reel was the original 1991 reel because it still had the rivets holding the brackets in place.

Pros
  • Sturdy construction
Cons
  • Some cons