益暐工業有限公司 | 益暐工業SUNUPMASTER - 專業汽車、機械齒輪製造商。

Description

Direct-replacement hub and sleeve set for the ZF S6-650 6-speed’s 5–6 synchronizer. Engineered to restore crisp, repeatable 4–5/5–6 shifts, it uses a broached internal spline and precision-finished dog teeth to guide the blocker rings and lock the gears cleanly. OE-matched geometry lets it drop in during rebuilds; select this variant by dog-tooth count and verify your transmission tag before ordering.

Specification

Tooth Count: Hub 42/38T , Sleeve 48T

Material: Alloy case-hardening steel, SCM415 / SAE 8620 or equivalent

Heat Treatment: Carburized & quenched

Surface Hardness: HRC 58–62

Manufacturing: CNC machining; internal spline broaching; dog-tooth finishing & deburring; locating/end faces precision-ground