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TREMEC S650 Main Shaft
Description
OE-matched replacement main shaft for the ZF S6-650 6-speed used on the S650 platform (commonly Ford Super Duty). Multiple helical gear stages are precision-hobbed for smooth, quiet torque transfer, while journals, splines, and locating faces are CNC-machined and finish-ground to ensure clean assembly and long service life. Pair with the matching counter gears and 1–2 / 3–4 / 5–6 synchronizer sets; verify by transmission tag and ratio family.
Specification
ooth Form: Helical
Tooth Counts : 38 / 28 / 43 / 48 / 24 teeth
Material: Alloy case-hardening steel, SCM415 / SAE 8620
Heat Treatment: Carburized & quenched
Surface Hardness: HRC 58–62
Manufacturing: CNC turning/milling; precision hobbing; edge-relief deburring; journals, splines & locating faces precision-ground
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Model：ZFS6-2 (S-829)
.webp "T10W-8CH(S-916)")
