Overview
The ZF 4699.302.308 DRIVE PINION is a precision-machined component engineered for the input shaft assembly of ZF WG100, WG130, and WG131 powershift transmissions. This OEM genuine part transfers rotational force from the torque converter to the planetary gear sets, directly influencing shift quality and torque delivery. The SKU 4699.302.308 is housed within the main transmission casing and interfaces with the 4699101070: HOUSING and the 4699301146: HOUSING to maintain precise gear alignment. As a wear-critical item, its condition directly affects drivetrain efficiency and operational lifespan.
Symptoms of Failure
- Audible gear whine or grinding noise during acceleration: Worn pinion teeth create uneven contact patterns, producing a high-pitched whine that intensifies under load. This is a common symptom in WG130 units with high service hours.
- Intermittent gear slipping or delayed engagement: When the drive pinion loses its hardened surface layer, it cannot maintain proper mesh with the countershaft, causing momentary power loss during shifts.
- Metallic debris in transmission fluid: Flaking or pitting on the pinion surface releases fine steel particles into the oil, often visible during routine drain intervals. This debris can damage the 4699309085: HOUSING COVER sealing surfaces.
- Vibration at specific RPM ranges: A worn pinion creates rotational imbalance, transmitting vibration through the 0636101411: CAP SCREW fasteners and into the transmission housing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.302.308 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Tooth Count | 23 (estimated) |
| Pitch Diameter | 72.5 mm (estimated) |
| Overall Length | 118 mm (estimated) |
| Spline Diameter | 32 mm (estimated) |
| Weight | 1.45 kg (estimated) |
| OEM Reference | ZF 4699.302.308 |
| Hardness | HRC 58-62 (case depth 0.8 mm) |
Compatibility
This drive pinion is specifically designed for ZF WG100, WG130, and WG131 series transmissions used in construction equipment, agricultural tractors, and material handlers. It is not interchangeable with WG180 or WG200 models due to different spline counts and shaft diameters. For WG200 applications, refer to the 4699102130: INPUT assembly. Always verify the transmission serial number before installation. The pinion works in conjunction with the 0631302212: CYLINDRICAL PIN for alignment and the 0634801038: SEALING RING to prevent oil migration.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101070 | HOUSING | Encloses the pinion and gear set |
| 4699301146 | HOUSING | Secondary housing for bearing support |
| 4699309085 | HOUSING COVER | Seals the pinion access port |
| 0636101411 | CAP SCREW | Secures housing cover to transmission |
| 0631302212 | CYLINDRICAL PIN | Aligns pinion shaft during assembly |
| 0634801038 | SEALING RING | Prevents oil leaks at pinion shaft |
| 0501319149 | SCREW PLUG | Closes inspection port on housing |
| 0637885613 | BREATHER | Vents internal transmission pressure |
| 0730365801 | TYPE PLATE | Identifies transmission model and specs |
| 4699102130 | INPUT | Complete input shaft assembly for WG200 |
ZF 4699.302.308 DRIVE PINION – Gear RFQ Support
PartsZF helps B2B buyers source ZF 4699.302.308 DRIVE PINION with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This gear page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 4699.302.308 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 | 4699.302.308 |
|---|---|
| Normalized SKU | 4699302308 |
| Part name | DRIVE PINION |
| Product category | gear |
| Cross-reference support | Available for RFQ review |
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 4646.302.128 HELICAL GEAR
- ZF 4143.316.088 PINION
- ZF 4657.302.007 INPUT GEAR
- ZF 4657.354.044 OUTPUT GEAR
- ZF 4644.306.326 GEAR SHIFT HOUSING
