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New Venture NV4500 3rd-4th Synchronizer Slider Sleeve
Description
The NV18321 is the synchronizer sleeve for the NV4500 5-speed’s 3rd/4th gear set. Precision-finished dog teeth with chamfers and ground faces deliver consistent blocking torque and crisp 2–3/3–4/4–3 engagements, while maintaining concentric alignment with the hub, blocker rings, and clutching teeth. Built to OE geometry and tolerances for a true drop-in during rebuilds.
Specification
Tooth Form: Synchronizer dog teeth (non-drive)
Tooth Count: 36T
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; faces precision-ground
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Model：NV18321
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