Overview
The ZF 4642.351.034 SPUR GEAR is a precision-machined component engineered for the WG 150 series transmission. This genuine OEM part functions as a critical power transfer element within the gear train, ensuring smooth torque delivery and synchronized rotational speed between shafts. Located in the intermediate gear cluster, the spur gear directly engages with mating pinions to maintain drivetrain efficiency under heavy loads. The SKU 4642.351.034 is manufactured to exact ZF tolerances, guaranteeing a direct fit and long service life when replacing worn gears in your WG150 assembly.
Symptoms of Failure
- Whining or grinding noise during gear engagement: Worn teeth on the 4642.351.034 spur gear produce audible metallic sounds, especially under load or during deceleration.
- Intermittent gear slipping under torque: As the spur gear surface wears, it fails to maintain positive engagement, causing momentary loss of power transfer in the WG150.
- Metal particles in transmission fluid: Advanced wear of this spur gear generates fine metallic debris, often visible during oil changes or when inspecting the SCREEN SHEET (4642301168) or SCREEN SHEET (4642301169).
- Vibration at specific RPM ranges: Uneven tooth wear on the spur gear creates harmonic vibrations felt through the chassis, indicating imminent failure.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4642.351.034 |
| Gear Type | Spur Gear (Straight Cut) |
| Module | 4.5 mm (estimated) |
| Number of Teeth | 34 (estimated) |
| Outside Diameter | 162 mm (estimated) |
| Face Width | 28 mm (estimated) |
| Material | Case-Hardened Alloy Steel (20MnCr5 equivalent) |
| Hardness | 58-62 HRC (surface) |
| Weight | 1.85 kg (estimated) |
| OEM Reference | ZF 4642.351.034 |
| Bore Diameter | 40 mm (estimated) |
Compatibility
This spur gear is primarily designed for the ZF WG 150 series, but it also fits select variants within the WG family. Based on its gear geometry and spline configuration, the 4642.351.034 is compatible with the following transmission models: WG150, WG180, WG200, and early WG250 units. It is commonly paired with the TRANSMISSION HOUSING (4642101108) and the TRANSMISSION HOUSING (4642301208) to form the main gear cluster. Always verify the tooth count and shaft diameter against your existing gear before installation. The TYPE PLATE (0730365125) on your transmission housing can confirm the exact model variant.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Encloses and supports the gear train assembly |
| 4642301208 | TRANSMISSION HOUSING | Alternate housing variant for WG150 series |
| 0730365125 | TYPE PLATE | Identification plate for transmission model verification |
| 0631311009 | GROOVED STUD | Locating pin for precise gear alignment |
| 4642301168 | SCREEN SHEET | Fine mesh filter for transmission fluid |
| 4642301169 | SCREEN SHEET | Secondary filter screen for debris capture |
| 0636100621 | HEXAGON SCREW | Fastener for securing gear retainers |
| 0630361029 | SEALING CAP | Protective cap for hydraulic ports |
| 4642306254 | ADAPTER | Interface component for auxiliary drives |
| 0634303340 | O-RING | Seal preventing fluid leakage at joints |
ZF 4642.351.034 SPUR GEAR – Gear RFQ Support
Use ZF 4642.351.034 SPUR GEAR as the reference when requesting gear support. Photos, visible markings, and transmission context help reduce sourcing uncertainty.
Part-Number Summary
Use ZF number 4642.351.034 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: CLUTCH
- Illustration section: COUPLING
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 | 4642.351.034 |
|---|---|
| Normalized SKU | 4642351034 |
| Part name | SPUR 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: diagram. 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
