GEAR - FLYWHEEL RING (Toyota TY00591-22126-81)

A worn flywheel ring gear can cause starter motor engagement failure, leading to no-start conditions. This aftermarket replacement part references Toyota catalog number TY00591-22126-81. The gear is a ring-shaped component that meshes with the starter drive to rotate the flywheel. A common failure consequence is stripped or chipped teeth, which prevent the starter from turning the flywheel. In a typical usage context, the ring gear endures repeated high-torque engagement cycles during each start attempt. The item ships at approximately 2.85 pounds. Verify the serial number or application, then call (562) 693-7748.

Part number variants: TY00591-22126-81, ty00591-22126-81, TY005912212681, ty005912212681