Flywheel Ring Gear
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ATP Flywheel Ring Gear

Part No. ZA-500 Warranty Details  

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The ring gear has teeth which engage with the starter motor allowing the engine to crank over and start. Repeated engagement with the starter results in worn or broken ring gear teeth. Once this is diagnosed, the ring gear must be replaced. ATP ring gears are designed to fit and function just like the original part to ensure durability and long life.

Product Features:
  • Manufactured to meet or exceed original equipment specs
  • Eliminates grinding from damaged teeth
  • Increases starter drive life
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Inside Diameter:13.268 in
Mounting Hardware Included:No
Outside Diameter:14.096 in
Tooth Quantity:168
Width:0.44 in

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

    I need a ring gear with an O.D. between 7" and 9".
    Asked on 9/12/2016 by Joe from Jupiter, Fl.

    1 answer



      Hi Joe! To locate the exact flywheel ring gear with an outer diameter between 7" and 9", please provide us with the year, make, model and engine size of your vehicle.

      Answered on 9/13/2016 by Steve from AAP
  • Q:

    Have a 66 chevelle when starting it doesn' start right off you have to keep turning ignition and it makes like a spinning sound, someone told me it needed a flywheel that is why it's not catching to start. Is this the only part needed for that problem or what do you suggest?
    Asked on 7/13/2011 by Anonymous

    1 answer



      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 7/17/2011 by Vincent from AAP
  • Q:

    how many teeth and what is the actual size?
    Asked on 2/27/2011 by bill

    1 answer



      The dimensions of the Ring Gears are O.D. : 14.096", I.D. : 13.268", Pitch : 12-14, Width : .440" and Teeth : 168.

      Answered on 2/28/2011 by Parts Guru Geo from AAP
Displaying questions 1-3

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