Overview
The ZF 4699.372.042 STEERING PINION is a critical steering control component engineered specifically for the WG100, WG130, and WG131 transmission series. This OEM genuine part translates rotational input from the steering column into precise linear movement, directing hydraulic flow to actuate clutch packs and shift gears. As a precision-machined element, it interfaces directly with the 4699101045 HOUSING to maintain alignment and pressure integrity. The SKU 4699.372.042 is manufactured to ZF’s exacting tolerances, ensuring minimal backlash and consistent response in heavy-duty industrial applications.
Symptoms of Failure
- Erratic or delayed gear engagement: When the steering pinion wears, operators often report hesitation or “clunking” during shifts, as the valve spool fails to receive accurate positioning signals.
- Steering wheel free play exceeding 15 degrees: Excessive clearance between the pinion teeth and mating rack creates a noticeable “dead zone” before transmission response, a classic sign of worn splines or bearing surfaces.
- Hydraulic oil contamination with metallic particles: Flaking or pitting on the pinion’s hardened surface introduces ferrous debris into the transmission fluid, visible during routine oil analysis or filter inspections.
- Intermittent loss of steering assist: A failing pinion can cause momentary pressure drops, leading to unpredictable steering effort, particularly under load or during low-speed maneuvers.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.372.042 |
| Material | Case-hardened alloy steel (16MnCr5 equivalent) |
| Overall Length | 185 mm |
| Shaft Diameter | 28 mm |
| Spline Count | 16 involute splines |
| Weight | 0.94 kg |
| Surface Hardness | 58–62 HRC |
| OEM Reference | ZF 4699.372.042 |
| Thread Size | M20 x 1.5 |
Compatibility
This steering pinion is designed for ZF’s WG-series powershift transmissions, specifically the WG100, WG130, and WG131 models. It is also compatible with the WG180 and WG200 variants when used in conjunction with the correct 4699301108 HOUSING adapter. The part fits both 2WD and 4WD configurations found in agricultural tractors, construction loaders, and material handling equipment. Always verify the steering column spline count and housing bore dimensions before installation. For complete assembly, pair this pinion with the 4699301085 COVER and 4699301014 THREAD PROTECTIVE SHIELD to seal the steering gear cavity against contaminants.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101045 | HOUSING | Encloses and supports the steering pinion assembly |
| 4699301108 | HOUSING | Alternate housing variant for WG180/WG200 adapters |
| 4699301085 | COVER | Seals the steering gear cavity from debris ingress |
| 4699301014 | THREAD PROTECTIVE SHIELD | Prevents thread damage during installation |
| 0634303141 | O-RING | Hydraulic seal between pinion and housing |
| 0734307407 | PROTECTION CAP | Covers exposed splines during transport |
| 0634301843 | SHAFT SEAL | Prevents oil leakage along the pinion shaft |
| 0630502034 | RETAINING RING | Secures the pinion axially within the housing |
| 0637885612 | BREATHER | Equalizes pressure inside the steering gear housing |
| 0636102023 | CAP SCREW | Fastens the cover to the housing |
ZF 4699.372.042 STEERING PINION – Gear RFQ Support
Use ZF 4699.372.042 STEERING PINION as the reference when requesting gear support. Photos, visible markings, and transmission context help reduce sourcing uncertainty.
Part-Number Summary
Use ZF number 4699.372.042 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 | 4699.372.042 |
|---|---|
| Normalized SKU | 4699372042 |
| Part name | STEERING PINION |
| 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
