Overview
The ZF 4644.106.085 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, translating driver input into smooth, reliable shifts within the transmission housing. Positioned directly on the valve body and connected to the selector shaft, the shift system ensures hydraulic circuits are correctly activated for each gear range. As a genuine ZF part, SKU 4644.106.085 guarantees exact fitment and factory-specified performance, eliminating the guesswork of aftermarket alternatives. When installed alongside a robust TRANSMISSION HOUSING (4642101109) or a TRANSMISSION HOUSING (4642301205), this shift system forms the core of reliable transmission operation.
Symptoms of Failure
When the ZF 4644.106.085 shift system begins to wear, operators will notice distinct performance degradation. Common failure symptoms include:
- Hard or delayed gear engagement – The transmission hesitates or requires excessive force when shifting between forward and reverse.
- Intermittent gear slipping – The transmission may unexpectedly drop out of gear under load, especially during acceleration.
- Erratic shift patterns – Gears engage at incorrect speeds or the transmission hunts between ranges without driver input.
- Oil contamination in the shift mechanism – Worn seals allow debris to enter the shift assembly, leading to sticking or binding.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4644.106.085 |
| Product Type | Shift System Assembly |
| Material | Hardened Steel / Aluminum Alloy |
| Weight | Approx. 2.8 kg (6.2 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 95 mm |
| OEM Reference | ZF 4644.106.085 |
| Mounting Hardware | Requires HEXAGON SCREW (0636100621) |
Compatibility
This genuine ZF shift system is engineered for the WG 150 Series transmission family. Based on its design and part number prefix, the 4644.106.085 is also compatible with the following ZF transmission models: WG 150, WG 180, WG 200, and WG 250. It integrates directly with the valve body and shift rail assembly. For complete installation, ensure the TYPE PLATE (0730365125) is properly affixed for identification, and secure the assembly using a GROOVED STUD (0631311009).
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 0730365125 | TYPE PLATE | Identification and specification label |
| 0631311009 | GROOVED STUD | Alignment and fastening pin |
| 4642301168 | SCREEN SHEET | Oil filtration mesh |
| 4642301169 | SCREEN SHEET | Secondary oil filtration mesh |
| 0636100621 | HEXAGON SCREW | Mounting fastener for shift system |
| 4642301186 | SCREEN SHEET | Fine filtration screen |
| 4642306050 | COVER PLATE | Seals shift system access port |
| 4644306464 | GASKET | Prevents oil leakage at mating surfaces |
ZF 4644.106.085 SHIFT SYSTEM – Shift System RFQ Support
PartsZF supports ZF 4644.106.085 SHIFT SYSTEM RFQs by checking the part number, related documentation, and buyer-supplied transmission context before quotation.
Part-Number Summary
Use ZF number 4644.106.085 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 | 4644.106.085 |
|---|---|
| Normalized SKU | 4644106085 |
| 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.
Related Parts
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- ZF 4651.106.023 SHIFT SYSTEM
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- ZF 4644.159.303 SHIFT SYSTEM
