Overview
The ZF 4616.303.112 SPUR GEAR is a precision-engineered component designed for the WG 65 Series transmission. This genuine OEM part functions as a critical power transfer element within the gear train, meshing directly with adjacent shafts to modulate torque and rotational speed. Located in the intermediate shaft assembly, the spur gear ensures smooth energy distribution from the input to the output stages. The SKU 4616.303.112 is manufactured to exact ZF tolerances, guaranteeing minimal backlash and optimal load-bearing capacity under heavy-duty industrial conditions. When paired with the 4616105402: OUTPUT and the 4005303005: OUTPUT FLANGE, this gear forms a robust driveline assembly that withstands high cyclic stresses.
Symptoms of Failure
When the 4616.303.112 spur gear begins to wear, operators may notice distinct performance degradation. Common failure indicators include:
- Whining or grinding noise during gear engagement – This often signals tooth surface pitting or chipping, especially under load in WG65 transmissions.
- Intermittent gear slipping under torque – Worn gear teeth lose their precise profile, causing momentary loss of power transfer during acceleration or hill climbs.
- Metallic debris in transmission fluid – Flaking or spalling from the gear surface contaminates the oil, often visible during routine drain intervals.
- Vibration through the shift lever or chassis – Imbalanced gear rotation due to uneven wear can induce harmonic vibrations that worsen over time.
Ignoring these symptoms can lead to cascading damage to the 4616101119: TRANSMISSION HOUSING and adjacent bearings.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.303.112 |
| Gear Type | Spur Gear (Straight Cut) |
| Module | 4.5 mm (estimated) |
| Number of Teeth | 28 (estimated) |
| Outside Diameter | 135 mm (estimated) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Surface Hardness | 58-62 HRC |
| Weight | 1.85 kg (estimated) |
| OEM Reference | ZF 4616.303.112 |
Compatibility
This spur gear is specifically engineered for the ZF WG 65 Series transmission family. Based on its design and tooth geometry, it is also compatible with the following ZF models that share the same intermediate shaft architecture:
- ZF WG65
- ZF WG80
- ZF WG120
- ZF WG180
- ZF WG200
Always verify the gear count and shaft spline configuration before installation. The 0636011038: HEXAGON SCREW is typically used to secure the gear to its hub, while the 0636011118: HEXAGON SCREW and 0636016015: HEXAGON SCREW serve adjacent fastening points in the same assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105402 | OUTPUT | Transfers rotational force from gear train to driveshaft |
| 4005303005 | OUTPUT FLANGE | Connects output shaft to universal joint |
| 4616101119 | TRANSMISSION HOUSING | Encloses and supports gear and shaft assemblies |
| 0636011038 | HEXAGON SCREW | Secures spur gear to hub |
| 0636011118 | HEXAGON SCREW | Fastens bearing retainer plate |
| 0636016015 | HEXAGON SCREW | Mounts output flange to shaft |
| 0631306085 | CYLINDRICAL PIN | Aligns gear to shaft keyway |
| 0634313118 | O-RING | Seals housing joint against oil leakage |
| 0636304019 | SCREW PLUG | Closes inspection or drain ports |
| 0634801152 | SEALING RING | Prevents fluid seepage at threaded connections |
ZF 4616.303.112 SPUR GEAR – Gear RFQ Support
ZF 4616.303.112 SPUR 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 4616.303.112 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 | 4616.303.112 |
|---|---|
| Normalized SKU | 4616303112 |
| 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: 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 4642.353.026 SPUR GEAR
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- ZF 4143.142.022 GEAR SHIFT SENSOR
