ATP Parts ZA-549 Clutch Flywheel Ring Gear
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ATP Parts

ATP Parts ZA-549 Clutch Flywheel Ring Gear

Brand ATP Parts ZA-549
Inside Diameter 9.856
LineCode ATP4
Outside Diameter 10.588
Pitch Flywheels 11.85
Ring Gear Chamfer NONE
Thickness 0.325
Tooth Quantity 125
Fits Volkswagen · 2 vehicles

OE-style replacement. Fits and functions like the original part for dependable service.

Starter engagement teeth. Restores the gear that helps the engine crank and start.

Precision ring gear. 125 teeth and a chamfer-free design for accurate engagement.

Cross-references MOOG Driveline Products 4473, Pioneer Automotive Industries FRG-125C and 125C for the same application. See all 8.

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Clutch Flywheel Ring Gear for Volkswagen

ATP Parts ZA-549 is a clutch flywheel ring gear built for starter engagement on select Volkswagen applications. It is specified with 125 teeth, a 10.588-inch outside diameter, and a 9.856-inch inside diameter for a direct-fit replacement on the listed Rabbit Convertible and Rabbit Pickup models.

Key Features

  • Part number: ZA-549
  • 125-tooth ring gear for starter motor engagement
  • Outside diameter: 10.588 inches
  • Inside diameter: 9.856 inches
  • Thickness: 0.325 inch
  • Pitch flywheels: 11.85
  • Ring gear chamfer: none
  • Designed to match original fit and function for durable service life

Detailed Description

When starter teeth begin to wear or break, the ring gear must be replaced to restore reliable cranking. ATP Parts ZA-549 is engineered as an OE-style replacement ring gear for the flywheel assembly, with the tooth count and dimensions needed for proper starter mesh. This makes it a practical choice for 1980 Volkswagen Rabbit Convertible and 1980 Volkswagen Rabbit Pickup service work where the original ring gear has failed. This part cross-references Pioneer Automotive Industries FRG-125C for the same application.

Common Problems This Part Can Solve

  • Starter motor grinding caused by worn ring gear teeth
  • Engine no-crank condition from broken or missing teeth
  • Intermittent starter engagement on the flywheel
  • Noise during cranking from poor tooth mesh
  • Flywheel service needs after ring gear wear is diagnosed

Installation Notes and Tips

Verify tooth count, inside diameter, outside diameter, and flywheel pitch before installation. For the listed fitments, ZA-549 fits 1980 Volkswagen Rabbit Convertible, N/A, and fits 1980 Volkswagen Rabbit Pickup, N/A. Inspect the starter drive and flywheel surface at the same time so the replacement ring gear is installed into a clean, serviceable assembly. Proper seating and alignment are important for consistent starter engagement.

Quality Assurance

ATP Parts ring gears are made to match the original part’s fit and function, supporting dependable starter engagement and long service life in the applications listed.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersPositionNotes
1980VolkswagenRabbit ConvertibleManual1.6LL4N/ATeeth: 125; Outer Diameter: 10.588"; Inner Diameter: 9.856"
1980VolkswagenRabbit PickupManual1.6LL4N/ATeeth: 125; Outer Diameter: 10.588"; Inner Diameter: 9.856"
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
MOOG Driveline Products — 4473Pioneer Automotive Industries — FRG-125C125C55105275FRG125CRG66VW125CXG76