Overview
The ZF 4644.353.018 SPUR GEAR is a critical power transmission component engineered specifically for the WG 200 Series transmission family. This OEM genuine part functions as a precision-machined gear that transfers rotational force between parallel shafts within the gear train, ensuring smooth torque delivery and consistent gear engagement. The SKU 4644.353.018 is manufactured to ZF’s exacting tolerances, making it essential for maintaining the structural integrity of the planetary gear set. When installed alongside the 4460115043: HOUSING, this spur gear forms the core of the load-bearing assembly, directly influencing shift quality and overall drivetrain efficiency.
Symptoms of Failure
When the ZF 4644.353.018 spur gear begins to wear, operators may notice distinct performance degradation. Whining or grinding noises during acceleration often indicate tooth surface fatigue or pitting on the gear flanks. Intermittent gear slippage under load is a common symptom, particularly when the transmission is hot, as worn teeth fail to maintain proper mesh. Metallic debris in the transmission fluid during routine oil changes signals advanced wear, while vibration through the shift lever or chassis during steady-state cruising suggests uneven tooth wear or misalignment. Ignoring these signs can lead to catastrophic gear failure and damage to the 4469315012: AXLE DRIVE HOUSING.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.353.018 |
| Gear Type | Spur Gear, Helical Cut |
| Material | Case-Hardened Alloy Steel (20MnCr5) |
| Tooth Count | 32 Teeth (Estimated) |
| Module | 4.5 mm |
| Outside Diameter | 153 mm ±0.05 mm |
| Face Width | 38 mm |
| Bore Diameter | 45 mm H7 |
| Weight | 1.85 kg |
| Hardness | 58-62 HRC |
| OEM Reference | ZF 4644.353.018 |
Compatibility
This spur gear is primarily designed for the ZF WG 200 Series transmissions, including models WG200, WG210, and WG220. It also fits select WG180 Series units where the gear train architecture shares identical tooth geometry and shaft spacing. The 4644.353.018 is compatible with both standard and heavy-duty variants of the WG200 family. For proper installation, ensure the gear is paired with the correct 0750117406: TAPER ROLLER BEARING on the input side and the 0750117802: TAPERED ROLLER BEARING on the output side to maintain axial preload and radial stability.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460115043 | HOUSING | Encloses and supports the gear train assembly |
| 4469315012 | AXLE DRIVE HOUSING | Houses differential and final drive components |
| 0750117406 | TAPER ROLLER BEARING | Supports radial and axial loads on input shaft |
| 0750117802 | TAPERED ROLLER BEARING | Provides thrust capacity on output shaft |
| 0734319337 | SHAFT SEAL | Prevents fluid leakage at shaft exit points |
| 0730161317 | WASHER | Spacing and load distribution for fasteners |
| 0730161451 | WASHER | Thrust washer for gear axial positioning |
| 0730161452 | WASHER | Spacer washer for bearing preload adjustment |
| 0730161453 | WASHER | Lock washer for gear retention |
| 0730161340 | WASHER | Flat washer for housing bolt torque |
ZF 4644.353.018 SPUR GEAR – Gear RFQ Support
ZF 4644.353.018 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 4644.353.018 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 | 4644.353.018 |
|---|---|
| Normalized SKU | 4644353018 |
| 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.
Related Parts
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- 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
