Overview
The ZF 4616.308.108 GEAR is a precision-machined component engineered specifically for the WG 65 Series transmission family. This OEM genuine part functions as a critical load-bearing gear within the planetary gearset, facilitating smooth torque transfer and speed regulation under heavy-duty operating conditions. The SKU 4616.308.108 is designed to mesh precisely with adjacent shafts and clutches, ensuring minimal backlash and consistent power delivery. When installed alongside the 4616105402: OUTPUT and the 4005303005: OUTPUT FLANGE, this gear forms the core of the driveline assembly, directly influencing overall transmission efficiency and durability.
Symptoms of Failure
- Whining or grinding noise during gear engagement: A worn 4616.308.108 gear often produces a high-pitched whine or metallic grinding sound, particularly under load or during acceleration. This indicates tooth surface degradation or pitting.
- Intermittent gear slipping under torque: When the gear teeth lose their hardened profile, the transmission may momentarily slip out of the intended ratio, causing a sudden loss of power to the wheels.
- Metal particles in transmission fluid: Advanced wear of this gear sheds microscopic steel fragments into the oil. Inspecting the fluid for a metallic sheen or sludge is a reliable diagnostic step.
- Vibration at specific road speeds: Uneven tooth wear creates imbalance, leading to noticeable driveline vibration that intensifies as the gear rotates faster.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4616.308.108 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 1.85 kg (approx.) |
| Outside Diameter | 108 mm |
| Tooth Count | 32 teeth (helical) |
| OEM Reference | ZF 4616.308.108 |
| Surface Hardness | 58-62 HRC |
Compatibility
This gear is a direct fit for the ZF WG 65 Series, including the WG65, WG80, and WG100 models. It also serves as a replacement in certain WG120 and WG150 transmissions where the planetary gearset shares identical tooth geometry. For proper installation, ensure the 4616101119: TRANSMISSION HOUSING is free of cracks and the 0636011038: HEXAGON SCREW is torqued to factory specifications. Always verify the gear’s spline count against your existing unit before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105402 | OUTPUT | Transfers rotational force from gearset to driveshaft |
| 4005303005 | OUTPUT FLANGE | Connects output shaft to universal joint |
| 4616101119 | TRANSMISSION HOUSING | Encloses and supports gear assembly |
| 0636011038 | HEXAGON SCREW | Secures housing and flange components |
| 0636011118 | HEXAGON SCREW | Fastens gear retention plate |
| 0636016015 | HEXAGON SCREW | Mounts bearing retainer |
| 0631306085 | CYLINDRICAL PIN | Aligns gear to shaft |
| 0634313118 | O-RING | Seals fluid passages |
| 0636304019 | SCREW PLUG | Closes inspection ports |
| 0634801152 | SEALING RING | Prevents oil leaks at joints |
ZF 4616.308.108 GEAR – Gear RFQ Support
ZF 4616.308.108 GEAR is handled as a gear-train sourcing item for transmission repair teams. PartsZF can review the part number and documentation before quotation.
Part-Number Summary
Use ZF number 4616.308.108 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
This gear supports gear train repair, rebuild, and part-number matching work. Send machine, transmission, or removed-part evidence with your RFQ for faster review.
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 4616.308.108 |
|---|---|
| Normalized SKU | 4616308108 |
| Part name | GEAR |
| Product category | gear |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
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