Ignition Coil
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ACDelco Ignition Coil

Part No. D577 Warranty Details  
$59.99
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An ACDelco GM Original Equipment Ignition Coil is a GM-recommended replacement for your vehicle's original component, and undergoes more stringent testing than aftermarket products. It increases electrical system voltage to help ignite the air/fuel mixture as the starting and charging system starts the engine, maintains the battery's charge, and provides power to the electrical accessories while the engine is running. An ACDelco GM OE Ignition Coil uses pure copper windings to improve durability and provide higher resistance to internal shorts and dielectric breakdown. Because the number and shape of the laminations determine the output characteristics of an ignition coil, ACDelco ensures that the silicone steel plates surrounding the coil correctly match the original part size and number. Since steel laminations work best when they are new, shiny, and clean, ACDelco laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed. This original equipment ignition coil has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • High quality coated windings to improve durability and provide protection against internal shorts and dielectric breakdown
  • Silicone steel plates surrounding the ignition coil correctly match the original part size and number exactly
  • Laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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OE Replacement:Yes

REVIEW SNAPSHOT®

by PowerReviews
ACDelcoIgnition Coil
 
4.5

(based on 4 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

No Cons

Best Uses

  • Everyday driving (4)

Reviewed by 4 customers

Displaying reviews 1-4

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5.0

Perfect Fit

By 

from Iowa

About Me Truck Enthusiast

See all my reviews

Verified Buyer
3 or more reviews submitted

Pros

  • Perfect Oem Fit

Cons

  • Not A Drop In Replacement

Best Uses

  • Everyday Driving

Comments about ACDelco Ignition Coil:

Looks to be a drop in replacement for the original coil. Does require you to drill out or otherwise remove the original rivets so you can re-use the factory bracket. Not difficult, but does take some extra skill and ability. The replacement unit bolts in with supplied bolts. Otherwise, easy to replace on a GM4.3, the coil is readily accessible on the top of the motor.

(3 of 3 customers found this review helpful)

 
5.0

Woks fine, fits fine. Good product.

By 

from Ft. Myers, FL

See all my reviews

Verified Buyer
Helpful Reviewer

Pros

    Cons

      Best Uses

      • Everyday Driving

      Comments about ACDelco Ignition Coil:

      The original parts is attached with rivets. They will have to be drilled out. The new part comes with screws, smart!

      (2 of 2 customers found this review helpful)

       
      4.0

      Good Choice

      By 

      from Holiday Shores

      See all my reviews

      Verified Buyer
      3 or more reviews submitted

      Pros

      • Improves Engine Efficiency
      • Increases Power

      Cons

        Best Uses

        • Everyday Driving
        • Replacement

        Comments about ACDelco Ignition Coil:

        I would recommend this product. It needs a little skill level to put it in.

        • Car & Truck:
        • Auto Enthusiast, Competitive Driver, Mechanic

        (5 of 5 customers found this review helpful)

         
        4.0

        replacement

        By 

        from PA

        Verified Buyer
        Helpful Reviewer

        Pros

        • Improves Engine Efficiency
        • Increases Power

        Cons

        • Difficult To Install

        Best Uses

        • Everyday Driving
        • Replacement

        Comments about ACDelco Ignition Coil:

        standard replacement for factory unit

        • Car & Truck:
        • Mechanic

        Displaying reviews 1-4

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        Do you have questions about this product?

         

        Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

        3 Questions | 5 Answers
        Displaying questions 1-3
        • Q:

          how do you replace it
          Asked on 4/8/2011 by Anonymous

          1 answer

          • CUSTOMER CARE

            A:

            I would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not (solve/be) the problem.

            Answered on 4/9/2011 by Parts Guru Geo from AAP
        • Q:

          is this located on the passenger side of the engine and also what tools will i need and how long of a job is this to repair?
          Asked on 2/26/2011 by R.Stone from Shelbyville,Ky.

          2 answers

          • CUSTOMER CARE

            A:

            The ignition coil is built into the distributor. The ignition signal from the ECM is sent to the power transistor. The distributor is not repairable and must be replaced as an assembly except for the distributor cap and rotor head. The rotor screw which secures distributor rotor head to the distributor shaft must be torque properly.

            Answered on 5/5/2011 by David the Dynamite Parts Guy from AAP
          • A:

            be sure you are replacing the coil for the right reason. LOOK closer!!! the wires connecting might just be broken. due to intake gasket replacement/ over handling!!!!! look first

            Answered on 6/19/2011 by MR GOODWRENCH from Detroit MI
        • Q:

          what tools do you need to install...this is attached to something with 4 strange looking bolts/nuts? Don't know who to describe..looks like a rivet of sorts..so how to take off and put new one one..thanks.
          Asked on 10/17/2010 by mark from va beach

          2 answers

          • CUSTOMER CARE

            A:

            Could you provide your vehicle information for further assistance.

            Answered on 10/24/2010 by Parker the Auto Parts Whisperer from AAP
          • A:

            You will need to file or carefully grind the tops off of those rivets on one side and drive them out of the bracket with a punch and a hammer or if you don't have a punch use a nail with the point filed flat. Reassemble using the supplied small machine bolts.

            Answered on 11/22/2010 by SofaKingSweet from Chicago,Il
        Displaying questions 1-3

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