ATP Automatic Transmission Ring Gear,Clutch Flywheel Ring Gear P/N:ZA-539
ATP ZA-500 starter ring gear for the 1999-2008 Chevrolet Silverado 1500 and other vehicles has teeth that the starter motor engages to crank the engine over and start it.
Repeated starter engagement wears the teeth down or breaks them, which can show up as grinding or a starter that spins without cranking the engine. A no-crank can also come from the starter or battery, so look at the teeth first. Chipped or missing ones can be seen during starter or transmission service, when the flywheel or flexplate is exposed. The ring gear sits on the flywheel or flexplate, one per vehicle.
This starter ring gear also fits the 1995-2007 Chevrolet Tahoe and the 1999-2005 GMC Sierra 1500 V8-4.8L, along with many other vehicles.
Interchange: FRG-168S
168C · 168S · RG168S · XG10 · XG11 · GM168S · 4414 · 3889694 · 3899668 · 3991408 · 460583 · 6003015 · 6003072 · RG10 · RG11 · FRG168C · 416114
This part cross-references / interchanges with the following part numbers:
Does the ATP ZA-500 starter ring gear fit a 1999-2008 Chevrolet Silverado 1500?
Yes. ATP ZA-500 is listed for the 1999-2008 Chevrolet Silverado 1500 and the 1995-2007 Chevrolet Tahoe. For any other car, look it up on the Buyer's Guide tab.
What pitch is the ATP ZA-500 ring gear?
The ATP ZA-500 ring gear has a 12/14 pitch and no chamfer.
Does this starter ring gear work with both automatic and manual transmissions?
Yes. This starter ring gear is listed for cars with an automatic transmission and for cars with a manual transmission, so it is not limited to one kind.
Can a worn ring gear stop the engine from cranking?
Yes, it can. When the teeth are worn or broken, the starter has little to engage, and once that is found the ring gear must be replaced.
Does the ATP ZA-500 replace ring gear number 3889694?
Yes. 3889694 is one of the numbers ATP ZA-500 replaces, along with 4414, 6003015 and RG168S.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.