Overview
The ZF 4644.106.092 SHIFT SYSTEM is a precision-engineered OEM genuine component designed exclusively for the WG 201 series transmissions. This critical assembly governs the hydraulic and mechanical engagement of gear ranges, translating driver commands into smooth, reliable shifts. Positioned within the valve body and directly interfacing with the main control unit, the shift system ensures precise oil flow direction to clutches and brakes. The SKU 4644.106.092 is factory-matched to ZF’s exact tolerances, guaranteeing direct bolt-on replacement without modification. When installed alongside the 4644101203: TRANSMISSION HOUSING or the 4644301382: TRANSMISSION HOUSING, this shift system restores factory shift feel and durability.
Symptoms of Failure
- Delayed or harsh gear engagement: Worn internal spools or seals cause hesitation when shifting from Neutral to Drive or Reverse, often accompanied by a jarring clunk.
- Transmission oil leaks at the shift shaft: Degraded O-rings and sealing rings allow ATF to weep past the shift mechanism, leaving puddles under the bell housing.
- Intermittent gear slipping under load: A failing shift system fails to maintain proper line pressure, resulting in momentary loss of drive power during acceleration or hill climbing.
- Erratic shift patterns or stuck in gear: Internal binding or broken detent springs prevent the system from returning to Neutral or engaging the correct range, often triggering fault codes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4644.106.092 |
| OEM Reference | ZF 4644.106.092 |
| Material | Hardened steel body with aluminum valve spools |
| Weight | 1.85 kg (4.08 lbs) |
| Dimensions (L x W x H) | 210 mm x 95 mm x 65 mm |
| Seal Type | Nitrile rubber O-rings and PTFE sealing rings |
| Operating Pressure | 12–18 bar (174–261 psi) |
| Temperature Range | -40°C to +120°C (-40°F to +248°F) |
| Threaded Fastener Torque | 25 Nm (18.4 lb-ft) |
Compatibility
This shift system is engineered for the ZF WG 201 series, including models such as WG180, WG200, WG210, and WG211. It is also compatible with certain WG 150 and WG 160 variants that share the same valve body architecture. Always verify the transmission serial number against the 0730365067: TYPE PLATE to confirm fitment. For complete assembly, pair this unit with the 4644301189: THREADED BUSH and 0636302005: SCREW PLUG to secure the shift mechanism to the transmission housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101203 | TRANSMISSION HOUSING | Main structural casing for gear train and valve body |
| 4644301382 | TRANSMISSION HOUSING | Alternate housing variant for WG201 series |
| 4644301189 | THREADED BUSH | Provides threaded anchor point for shift system bolts |
| 0636302005 | SCREW PLUG | Seals hydraulic passages in the shift system bore |
| 0634306198 | O-RING | Prevents fluid bypass around shift spool bores |
| 0634801098 | SEALING RING | Static seal between shift system and housing |
| 0730365067 | TYPE PLATE | Identification plate with transmission model and serial |
| 0631311009 | GROOVED STUD | Alignment dowel for shift system positioning |
| 4644301161 | COVER PLATE | Protective cover over shift mechanism access port |
| 0636100621 | HEXAGON SCREW | Fastener for securing cover plate and shift assembly |
ZF 4644.106.092 SHIFT SYSTEM – Shift System RFQ Support
ZF 4644.106.092 SHIFT SYSTEM can be reviewed as a shift-system sourcing item for WG, BP, HL, or ERGOPOWER-related service work when the application evidence is available.
Part-Number Summary
Use ZF number 4644.106.092 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: SHIFT SYSTEM
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 | 4644.106.092 |
|---|---|
| Normalized SKU | 4644106092 |
| Part name | SHIFT SYSTEM |
| Product category | shift system |
| 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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