Overview
The ZF 4644.159.353 SHIFT SYSTEM is a precision-engineered OEM genuine component designed specifically for the WG 150 Series transmission. This critical assembly governs gear selection and engagement, ensuring smooth, reliable power transfer in heavy-duty commercial and industrial applications. Positioned within the transmission housing, the shift system interfaces directly with the control mechanism to actuate clutch packs and synchronizers. As a direct OEM replacement, the SKU 4644.159.353 guarantees exact fitment and factory-specified performance, eliminating the guesswork of aftermarket alternatives. For optimal sealing and structural integrity, this shift system is often installed alongside the TRANSMISSION HOUSING (4642101109) and the TRANSMISSION HOUSING (4642301205), which provide the robust enclosure required for high-torque operations.
Symptoms of Failure
When the ZF 4644.159.353 shift system begins to wear, operators may notice distinct performance issues. Common failure indicators include:
- Delayed or harsh gear engagement – The transmission hesitates or clunks when shifting between forward and reverse, often caused by worn shift forks or detent mechanisms.
- Gear slipping under load – The transmission unexpectedly drops out of gear during acceleration, a clear sign of degraded shift system components.
- Oil leaks near the shift tower – Hydraulic fluid seeping from the shift system area indicates seal failure, which can lead to pressure loss and erratic shifting.
- Inability to select specific gears – The shift lever feels loose or fails to engage certain ratios, pointing to internal wear in the shift rail or selector assembly.
Addressing these symptoms promptly with the genuine 4644.159.353 part prevents cascading damage to the TYPE PLATE (0730365125) and other internal components.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4644.159.353 |
| OEM Reference | ZF Genuine |
| Material | Hardened steel with corrosion-resistant coating |
| Weight | Approx. 2.8 kg (6.2 lbs) |
| Dimensions (L x W x H) | 320 mm x 180 mm x 95 mm |
| Compatible Housing | 4642101109 and 4642301205 |
| Fastener Type | HEXAGON SCREW (0636100621) |
| Screen Sheet Options | 4642301168, 4642301169, 4642301186 |
Compatibility
The ZF 4644.159.353 SHIFT SYSTEM is engineered primarily for the WG 150 Series transmission. Based on its design and OEM application, this shift system is also compatible with the following ZF models: WG 180, WG 200, and WG 250 series transmissions, which share similar shift rail geometry and mounting interfaces. For precise fitment, always verify the transmission serial number against the OEM parts catalog. The shift system integrates with the GROOVED STUD (0631311009) for secure alignment and the COVER PLATE (4644306500) for protection against debris ingress.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Encloses and supports internal transmission components |
| 4642301205 | TRANSMISSION HOUSING | Alternative housing for specific WG150 variants |
| 0730365125 | TYPE PLATE | Identifies transmission model and serial number |
| 0631311009 | GROOVED STUD | Provides precise alignment for shift system mounting |
| 4642301168 | SCREEN SHEET | Filters hydraulic fluid for shift system |
| 4642301169 | SCREEN SHEET | Alternative filtration mesh for high-flow applications |
| 0636100621 | HEXAGON SCREW | Secures shift system to housing |
| 4642301186 | SCREEN SHEET | Fine-mesh screen for debris protection |
| 4644106300 | SHIFT SYSTEM | Alternate shift system variant for WG200 series |
| 4644306500 | COVER PLATE | Protects shift system from external contaminants |
ZF 4644.159.353 SHIFT SYSTEM – Shift System RFQ Support
ZF 4644.159.353 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 4644.159.353 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 | 4644.159.353 |
|---|---|
| Normalized SKU | 4644159353 |
| 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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- ZF 4644.159.303 SHIFT SYSTEM
