Overview
The ZF 4699.302.255 DRIVE PINION is a critical torque-transfer component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part transmits rotational force from the input shaft to the planetary gearset, ensuring precise gear engagement and load distribution within the final drive assembly. The SKU 4699.302.255 is machined from high-strength alloy steel to withstand extreme shear stresses and cyclic loading. It interfaces directly with the 4699101086 HOUSING and the 4699301223 HOUSING, forming a sealed, lubricated cavity that maintains gear alignment under heavy-duty operation.
Symptoms of Failure
- Whining or grinding noise during gear shifts: Worn pinion teeth create irregular contact patterns, producing audible metallic sounds that intensify under load.
- Delayed or harsh engagement: A damaged drive pinion causes backlash in the drivetrain, leading to sluggish acceleration or abrupt clutch engagement.
- Metallic debris in transmission fluid: Flaking or chipped pinion teeth contaminate the oil, often visible as glitter-like particles during fluid changes.
- Vibration at specific RPM ranges: Imbalanced pinion rotation transmits resonance through the housing, felt as a low-frequency shudder in the chassis.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4699.302.255 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Teeth Count | 18 (estimated) |
| Pitch Diameter | 72.5 mm |
| Overall Length | 145 mm |
| Spline Diameter | 28 mm (internal) |
| Weight | 1.85 kg |
| OEM Reference | ZF 4699.302.255 |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
Compatibility
This drive pinion is designed exclusively for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It also fits select WG180 and WG200 variants when used with the appropriate 0636302022 SCREW PLUG and 0501319149 SCREW PLUG for oil gallery sealing. Always verify your transmission’s serial number against ZF’s technical documentation before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101086 | HOUSING | Encloses the pinion and gearset |
| 4699301223 | HOUSING | Secondary housing for bearing support |
| 0636302022 | SCREW PLUG | Seals oil passages in the housing |
| 0501319149 | SCREW PLUG | Threaded plug for pressure ports |
| 0634801038 | SEALING RING | Prevents fluid leakage at joints |
| 0730365801 | TYPE PLATE | Identification label for transmission model |
| 0501323165 | SHAFT SEAL | Dynamic seal around the pinion shaft |
| 4699301222 | COVER | Protective cover for the housing opening |
| 0634303996 | O-RING | Static seal between housing halves |
| 0630513060 | SNAP RING | Retains bearings on the pinion shaft |
ZF 4699.302.255 DRIVE PINION – Gear RFQ Support
Use ZF 4699.302.255 DRIVE PINION as the reference when requesting gear support. Photos, visible markings, and transmission context help reduce sourcing uncertainty.
Part-Number Summary
Use ZF number 4699.302.255 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: INPUT
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 | 4699.302.255 |
|---|---|
| Normalized SKU | 4699302255 |
| Part name | DRIVE PINION |
| 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.
Related Parts
- ZF 4661.302.010 GEAR
- ZF 2094.306.024 GEAR SHIFT RAIL
- ZF 4642.353.026 SPUR GEAR
- ZF 4143.142.013 GEAR SHIFT SENSOR
- ZF 4143.142.022 GEAR SHIFT SENSOR
