USA Standard Manual Transmission ZF 4th Countershaft Gear 39-Tooth

USA Standard remanufactures top quality manual transmission components. We rebuild manual transmission units from top manufacturers such as New Ventures, Borg Warner, Tremec, New Process, Muncie, etc. Vehicle fitments include Ford, GM, Jeep, Dodge, Chevrolet, Mazda, Pontiac, Chrysler and more. Each premium part is dynamometer tested. All units are subject to our intensive proprietary hydroblast cleaning process that allows us to inspect every angle for impurities and restoration. We only ship units after components have been replaced and have completed our quality control inspection process. Each transmission unit is approved and signed off by our professional rebuilding team in-house, verifying it’s USA Standard. After our standards are met, the kits are assembled in-house to confirm you get the right parts every time. We do not cut corners, we do not compromise.

4th Countershaft Gear

6-Speed

6-Speed

39-Tooth