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TOYOTA 4th5th Synchronizer Hub
Description
Synchronizer hub for Toyota manual transmissions, serving 4th and 5th gear engagement with the matching sleeve. Made from case-hardening alloy steel, carburized & quenched, and precision-ground on critical faces. Dog teeth and internal spline are held to OE tolerances for precise shift location, durability, and consistent synchronizer performance.
Specification
Tooth Form: Synchronizer dog teeth on OD; internal spline to OE spec
Material: SCM415 / SAE 8620 alloy case-hardening steel (or equivalent)
Heat Treatment: Carburized & quenched
Surface Hardness: HRC 58–62 (tough core)
Manufacturing: CNC turning/milling, broached internal spline, dog-tooth finishing & deburring; precision-ground locating faces
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Model：33393-36060
.webp "T10W-46(S-519)")
