Overview
The ZF 4108.302.016 PLANETARY GEAR is a critical torque-multiplying component engineered for the planetary gearset assembly within ZF WG100, WG130, and WG131 transmissions. This OEM genuine part transfers rotational force from the sun gear to the carrier, enabling smooth ratio changes under heavy load. Positioned directly within the main gear cluster, the 4108.302.016 planetary gear interfaces with the 4108101031: HOUSING and the 4108303155: HOUSING to form a sealed, high-torque module. Precision-ground teeth and case-hardened metallurgy ensure minimal backlash and extended service life in demanding industrial applications.
Symptoms of Failure
- Audible whining or grinding during gear engagement: Worn planetary gear teeth produce a distinct high-pitched noise under load, often mistaken for bearing failure.
- Erratic shifting or gear slipping under torque: A degraded 4108.302.016 allows the planetary set to skip, causing sudden RPM surges without corresponding speed increase.
- Metallic debris in transmission fluid: Flaking or pitting on the gear face releases fine steel particles, visible during oil changes or when inspecting the 0636302015: SCREW PLUG magnetic tip.
- Vibration in neutral or drive: Uneven wear on the planetary gear creates imbalance, transmitting through the 0630361037: SEALING CAP and into the driveline.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4108.302.016 |
| OEM Reference | ZF 4108 302 016 |
| Gear Type | Planetary (helical cut) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Outside Diameter | 98.5 mm |
| Bore Diameter | 32.0 mm |
| Face Width | 28.0 mm |
| Number of Teeth | 22 |
| Weight | 0.85 kg |
| Hardness | 58-62 HRC (case depth 0.8 mm) |
Compatibility
This genuine ZF planetary gear is designed for the following transmission models: WG100, WG130, and WG131. It is also compatible with select variants of the WG180 and WG200 series when used in the primary planetary stage. Always verify the existing gear count and bore size against your unit. The 4108.302.016 replaces earlier revisions 4108.302.010 and 4108.302.012 without modification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101031 | HOUSING | Encloses planetary gearset; provides oil channels |
| 4108303155 | HOUSING | Secondary housing for output shaft support |
| 0636302015 | SCREW PLUG | Magnetic drain plug; captures ferrous debris |
| 0630361037 | SEALING CAP | Prevents fluid leakage at housing ports |
| 0730361010 | SEALING CAP | Alternate cap for high-pressure circuits |
| 0736305007 | SCREW PLUG | Hex plug for filler/drain points |
| 0634801165 | SEALING RING | O-ring for housing-to-gear interface |
| 0730365280 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Alignment pin for planetary carrier |
| 4108108019 | INTERM.GEARBOX | Intermediate gearbox assembly (contains planetary set) |
ZF 4108.302.016 PLANETARY GEAR – Gear RFQ Support
ZF 4108.302.016 PLANETARY 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 4108.302.016 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 | 4108.302.016 |
|---|---|
| Normalized SKU | 4108302016 |
| Part name | PLANETARY 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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- ZF 4143.142.022 GEAR SHIFT SENSOR
