Overview
The ZF 4699.372.008 STEERING GEAR is a critical internal component within the WG100, WG130, and WG131 transmission assemblies. This OEM genuine part functions as the primary interface between the hydraulic control system and the mechanical gear train, directing fluid flow to engage specific clutch packs and planetary gearsets. As a precision-machined rotary valve, it ensures smooth directional changes and consistent torque delivery under heavy industrial loads. The SKU 4699.372.008 is engineered to exact ZF tolerances, making it a direct replacement for worn units in medium-duty powershift transmissions. When installed alongside the 4699101046 HOUSING, this steering gear maintains the hydraulic integrity required for reliable operation in construction and agricultural machinery.
Symptoms of Failure
- Erratic gear engagement or delayed shifting — When the steering gear spool wears, hydraulic pressure bleeds internally, causing hesitation when moving from forward to reverse. Operators often report a “soft” shift feel that worsens over time.
- Oil leaks around the steering column housing — Worn sealing surfaces on the 4699.372.008 allow transmission fluid to seep past the 4699301109 HOUSING, leaving visible drips under the vehicle after shutdown.
- Increased operating noise (whining or grinding) — Metal-to-metal contact from a scored steering gear produces a high-pitched whine during turns, particularly when the transmission is under load in low gear.
- Intermittent loss of steering assist — A failing gear can cause sudden loss of hydraulic boost, making the wheel feel heavy or jerky during low-speed maneuvers in confined job sites.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4699.372.008 |
| OEM Reference | ZF 4699.372.008 |
| Material | Hardened alloy steel (case-hardened) |
| Weight | 1.85 kg (4.08 lbs) |
| Overall Length | 142 mm |
| Spool Diameter | 28 mm |
| Seal Groove Width | 4.2 mm |
| Operating Pressure | 18-22 bar (261-319 psi) |
| Temperature Range | -20°C to +120°C |
Compatibility
This steering gear is specifically designed for ZF WG-series powershift transmissions. Verified compatible models include WG100, WG130, and WG131. It may also fit select variants of the WG180 and WG200 series when used with the correct 4699301017 BEARING COVER and 4699301085 COVER. Always verify your transmission serial number against ZF parts catalogs before ordering, as housing configurations vary between early and late production units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101046 | HOUSING | Encloses the steering gear assembly |
| 4699301109 | HOUSING | Secondary housing for valve body |
| 4699301017 | BEARING COVER | Seals and supports steering shaft |
| 4699301085 | COVER | Protects internal gear mechanism |
| 4699301014 | THREAD PROTECTIVE SHIELD | Prevents thread damage during installation |
| 0634303141 | O-RING | Hydraulic seal between components |
| 0734307407 | PROTECTION CAP | Covers exposed ports during storage |
| 0634309600 | SHAFT SEAL | Prevents fluid leakage along shaft |
| 0637885612 | BREATHER | Equalizes pressure in transmission housing |
| 0636102023 | CAP SCREW | Fastens steering gear to housing |
ZF 4699.372.008 STEERING GEAR – Gear RFQ Support
PartsZF helps B2B buyers source ZF 4699.372.008 STEERING GEAR with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This gear page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 4699.372.008 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
- Illustration section: KIT STEERING GEAR SET
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 | 4699.372.008 |
|---|---|
| Normalized SKU | 4699372008 |
| Part name | STEERING GEAR |
| Product category | gear |
| Cross-reference support | Available for RFQ review |
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
- ZF 4646.302.128 HELICAL GEAR
- ZF 4143.316.088 PINION
- ZF 4657.302.007 INPUT GEAR
- ZF 4657.354.044 OUTPUT GEAR
- ZF 4644.306.326 GEAR SHIFT HOUSING
