Overview
The ZF 4644.159.352 SHIFT SYSTEM is a precision-engineered OEM genuine component designed exclusively for the WG 150 Series transmission family. This critical assembly governs gear selection and engagement, translating driver commands into smooth, reliable shifts within the transmission’s hydraulic control circuit. As the mechanical interface between the valve body and the clutch packs, the shift system ensures precise pressure routing for each gear ratio. The SKU 4644.159.352 is manufactured to ZF’s exacting tolerances, guaranteeing direct fitment and long service life. When paired with a robust TRANSMISSION HOUSING or a TRANSMISSION HOUSING, this shift system forms the operational core of your WG150 transmission.
Symptoms of Failure
- Erratic or delayed gear engagement: Worn shift system components cause hesitation or harsh engagement when moving from Neutral to Drive or Reverse, often accompanied by a noticeable clunk.
- Intermittent gear slippage under load: As internal seals or detents degrade, the transmission may slip out of gear during acceleration, particularly in higher gears.
- Internal hydraulic fluid leaks: Cracks or wear in the shift system housing can allow ATF to bypass seals, leading to low fluid levels and eventual transmission overheating.
- Stuck or inoperable shift lever: Mechanical binding within the shift system can prevent the lever from moving through its full range, leaving the transmission locked in one gear.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4644.159.352 |
| OEM Reference | ZF 4644.159.352 |
| Material | High-strength aluminum alloy with hardened steel detent components |
| Weight | 1.8 kg (4.0 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 95 mm |
| Seal Type | Nitrile rubber (NBR) O-rings |
| Operating Pressure | 10-18 bar (145-261 psi) |
Compatibility
This shift system is specifically engineered for the ZF WG 150 Series transmission. While the 4644.159.352 is optimized for the WG150, it may also be compatible with select variants in the WG180 and WG200 series, provided the transmission uses the same hydraulic control architecture. Always verify the existing shift system part number before replacement. For transmissions requiring a TYPE PLATE for identification, cross-reference the serial number to confirm fitment. The assembly also integrates with a GROOVED STUD for secure mounting within the valve body.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for the transmission assembly |
| 4642301205 | TRANSMISSION HOUSING | Alternative housing variant for specific WG150 configurations |
| 0730365125 | TYPE PLATE | Identification plate for transmission model and serial number |
| 0631311009 | GROOVED STUD | Mounting stud for securing shift system components |
| 4642301168 | SCREEN SHEET | Fine mesh filter for hydraulic fluid debris protection |
| 4642301169 | SCREEN SHEET | Alternative filter screen for high-flow applications |
| 0636100621 | HEXAGON SCREW | Fastener for housing and shift system attachment |
| 4642301186 | SCREEN SHEET | Fine-mesh screen for valve body inlet protection |
| 4644106300 | SHIFT SYSTEM | Alternate shift system variant for WG180 series |
| 4644306500 | COVER PLATE | Protective cover for shift system access port |
ZF 4644.159.352 SHIFT SYSTEM – Shift System RFQ Support
PartsZF supports ZF 4644.159.352 SHIFT SYSTEM RFQs by checking the part number, related documentation, and buyer-supplied transmission context before quotation.
Part-Number Summary
Use ZF number 4644.159.352 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 | 4644.159.352 |
|---|---|
| Normalized SKU | 4644159352 |
| 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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