Overview
The ZF 0501.327.443 STEERING GEAR is a critical rotational component engineered for precise power transmission within the WG100, WG130, and WG131 transmission assemblies. This OEM genuine part, identified by SKU 0501.327.443, functions as the primary interface between the steering column and the hydraulic control unit, converting rotational input into linear motion for directional control. It sits directly within the gear housing, meshing with the output shaft to ensure smooth, responsive steering in heavy-duty industrial applications. For optimal sealing and structural integrity, this gear is installed alongside the 4699101081: HOUSING and the 0501329881: HOUSING COVER, which protect the internal mechanism from contamination.
Symptoms of Failure
- Steering gear oil leaks around the shaft seal: Worn teeth or bearing surfaces on the 0501.327.443 cause seal misalignment, leading to visible hydraulic fluid drips near the steering column connection.
- Intermittent gear slipping during low-speed maneuvers: Degraded splines result in a momentary loss of steering response, often described as a “clunk” or hesitation when turning at idle.
- Excessive play or free travel in the steering wheel: As the gear wears, operators notice a 10-15 degree dead zone before the wheels respond, indicating internal backlash.
- Unusual grinding or whining noise from the transmission: Metal fatigue in the gear teeth produces a high-pitched sound under load, especially during sharp turns.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.327.443 |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 1.85 kg (4.08 lbs) |
| Overall Length | 142 mm |
| Shaft Diameter | 28 mm |
| Tooth Count | 18 helical teeth |
| OEM Reference | ZF 0501.327.443 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This steering gear is specifically designed for ZF WG-series transmissions, including the WG100, WG130, and WG131 models. It is also compatible with the WG180 and WG200 series when used with the appropriate 0634306309: O-RING and 0637885612: BREATHER for pressure equalization. The part fits both standard and high-capacity steering systems found in agricultural tractors, forklifts, and construction loaders. Always verify the housing bore diameter against your existing assembly before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101081 | HOUSING | Encloses the steering gear and supports bearing loads |
| 0501329881 | HOUSING COVER | Seals the gear cavity and retains lubricant |
| 0634306309 | O-RING | Provides static seal between housing and cover |
| 0637885612 | BREATHER | Equalizes internal pressure and vents moisture |
| 0501319149 | SCREW PLUG | Seals oil fill port on the housing |
| 0636302022 | SCREW PLUG | Closes drain port for maintenance access |
| 0634801038 | SEALING RING | Prevents leakage around screw plugs |
| 0730365801 | TYPE PLATE | Identifies transmission model and serial number |
| 4699001100 | GK10 | Gear kit containing bearings and shims |
| 4699102083 | INPUT | Primary drive shaft connecting to the steering gear |
ZF 0501.327.443 STEERING GEAR – Gear RFQ Support
ZF 0501.327.443 STEERING 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 0501.327.443 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: STEERING PARTS
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 | 0501.327.443 |
|---|---|
| Normalized SKU | 0501327443 |
| Part name | STEERING 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 4143.142.022 GEAR SHIFT SENSOR
