Overview
The ZF 4699.302.037 DRIVE PINION is a critical torque-transfer component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part serves as the primary input element that engages with the planetary gearset to convert rotational force from the engine into usable mechanical energy for the driveline. Positioned within the front housing assembly, the drive pinion meshes directly with the WHEEL SHAFT to ensure synchronized power delivery. The SKU 4699.302.037 is precision-machined to ZF’s exacting tolerances, guaranteeing seamless integration with the HOUSING and the BASIC PARTS kit during rebuilds.
Symptoms of Failure
When the ZF 4699.302.037 drive pinion deteriorates, operators typically encounter these specific failure indicators:
- Audible whining or grinding noise during acceleration – Worn gear teeth produce a high-pitched metallic sound, especially under load, indicating the pinion is no longer meshing cleanly with the PLANET CARRIER.
- Delayed or harsh gear engagement – A failing pinion causes hesitation when shifting from neutral to drive or reverse, as the splines slip before catching.
- Metal debris in transmission fluid – Flakes or slivers found during oil changes signal advanced wear of the pinion’s hardened steel surface.
- Vibration through the chassis at highway speeds – Imbalanced rotation from a damaged pinion transmits harmonic tremors that worsen with RPM.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.302.037 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 142 mm |
| Spline Diameter | 28 mm (involute spline) |
| Weight | 1.85 kg |
| OEM Reference | ZF 4699.302.037 (Genuine) |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
| Surface Finish | Ground & polished (Ra ≤ 0.4 µm) |
Compatibility
This drive pinion is specifically engineered for ZF’s WG-series powershift transmissions. Verified compatible models include:
- ZF WG100 (all variants)
- ZF WG130 (standard and heavy-duty)
- ZF WG131 (off-highway and industrial)
- ZF WG180 (when used with WHEEL SHAFT adapter kits)
- ZF WG200 (retrofit applications with HOUSING modifications)
Always cross-reference your transmission’s serial number with the BASIC PARTS assembly diagram to confirm fitment before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699100020 | BASIC PARTS | Core rebuild kit including seals and gaskets |
| 4699300136 | HOUSING | Encloses the pinion and planetary assembly |
| 4699300155 | WHEEL SHAFT | Transfers torque from pinion to output |
| 4699300127 | PLANET CARRIER | Holds planetary gears in mesh with pinion |
| 4699300098 | INNER DISK CARRIER | Supports clutch disk stack |
| 4699200011 | RING GEAR | Outer gear for planetary reduction |
| 4699300152 | TOOTHED DISC | Engages with pinion for speed sensing |
| 4699300153 | RING GEAR | Secondary ring for dual-planet systems |
| 4699300154 | RING | Retaining ring for pinion bearing |
| 4699300128 | PLANETARY GEAR | Individual gear within the carrier |
ZF 4699.302.037 DRIVE PINION – Gear RFQ Support
ZF 4699.302.037 DRIVE PINION 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 4699.302.037 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 | 4699.302.037 |
|---|---|
| Normalized SKU | 4699302037 |
| 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
