ZF S6-650

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ZF S6-650 is a manual gearbox from ZF. The Society has 3 vehicles on file with it, 3 with a source we opened and 0 still leads.

Chevrolet

Vehicle	Years	Shift pattern	Gearbox source	Members
Chevrolet Silverado 2500/3500 (HD) First-generation HD (GMT800) 8.1L Vortec V8 and 6.6L Duramax V8 with the six-speed manual ^[1]	MY2002 opened; dieselhub gives 2001-2006 for the six-speed on 8.1L and Duramax trucks	6 speed, dogleg	Corroborated

Vehicle	Years	Shift pattern	Gearbox source	Members
Ford F-250 / F-350 / F-450 / F-550 Super Duty Super Duty (first generation) 7.3L Power Stroke diesel and 6.8L V10 with the ZF six-speed manual ^[2]	1999-2003	6 speed, dogleg	Corroborated

Vehicle	Years	Shift pattern	Gearbox source	Members
GMC Sierra 2500/3500 (HD) First-generation HD (GMT800) 8.1L Vortec V8 and 6.6L Duramax V8 with the six-speed manual ^[3]	2001-2006 per dieselhub	6 speed, dogleg	Corroborated

Retailer. dieselhub ZF 6-speed page lists the S6-650 for 2001-2006 GMC Sierra and Chevrolet Silverado 2500/3500 with the 8.1L Vortec or 6.6L Duramax. [link]
Retailer. dieselhub lists the S6-650 for 1999-2003 Ford Super Duty F-250 to F-550 with the 7.3L Power Stroke or 6.8L V10. [link]
Retailer. dieselhub lists the S6-650 for 2001-2006 Sierra and Silverado 2500/3500. [link]

Categories: Gearboxes | ZF

This page was last edited on November 11, 2026. Gearbox codes change by year, engine and market. Send a correction.