Overview
The ZF 4616.105.416 VALVE is a critical hydraulic control component engineered specifically for the WG 65 Series transmission family. This OEM genuine part governs the precise flow of transmission fluid to modulate clutch pack engagement and shift timing within the valve body assembly. As a direct-acting spool valve, it ensures consistent line pressure regulation under varying load conditions. The SKU 4616.105.416 is manufactured to ZF’s original tolerances, guaranteeing seamless integration with the transmission’s hydraulic circuit. When installed alongside a properly functioning SOLENOID VALVE (0501319251), this valve forms the core of the shift control system, translating electronic commands into hydraulic actions.
Symptoms of Failure
- Erratic shift timing or delayed engagement: A worn 4616.105.416 valve often causes hesitation when shifting from neutral to drive or between forward gears, as internal bore wear allows fluid bypass.
- Transmission fluid leaks near the valve body: Degraded sealing surfaces on this valve can produce external oil seepage, particularly around the mounting flange, leading to low fluid levels and potential overheating.
- Harsh or flared shifts under load: When the valve sticks due to debris or bore scoring, operators may experience sudden, jarring gear changes or prolonged slipping during acceleration, especially in WG65-equipped vehicles.
- Inconsistent line pressure readings: Internal leakage past the valve spool causes pressure fluctuations, triggering diagnostic trouble codes (DTCs) related to clutch circuit performance.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.105.416 |
| OEM Reference | ZF 4616.105.416 |
| Material | Hardened steel spool with anodized aluminum body |
| Weight | 0.32 kg (0.71 lbs) |
| Overall Length | 82 mm |
| Spool Diameter | 12 mm |
| Seal Type | PTFE backup ring with O-ring |
| Operating Pressure | 8–22 bar |
| Temperature Range | -40°C to +120°C |
Compatibility
This valve is designed for the ZF WG 65 Series, which includes the WG65, WG80, WG100, WG120, WG150, WG180, and WG200 transmission models. It is also backward-compatible with select WG 50 Series units that share the same valve body architecture. Always verify the valve bore diameter and port configuration against your transmission’s hydraulic schematic before installation. For complete assembly integrity, pair this valve with a new SCREW PLUG (0636302013) and a SEALING RING (0634801038) to prevent fluid bypass. The valve mounts directly into the CONSOLE (4616305078), which provides the structural housing for the entire shift control assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0501319251 | SOLENOID VALVE | Electro-hydraulic actuator for shift control |
| 0636302013 | SCREW PLUG | Seals valve body ports against leakage |
| 0634801038 | SEALING RING | Provides static seal between valve and housing |
| 4616305078 | CONSOLE | Mounting bracket for valve assembly |
| 0636010047 | HEXAGON SCREW | Fastens valve to console |
| 0636101020 | CAP SCREW | Secures hydraulic line connections |
| 0630001010 | WASHER | Distributes load under fastener heads |
| 0637006015 | HEXAGON NUT | Locks threaded components in place |
| 0637842523 | SCREW-IN SLEEVE | Provides threaded insert for wear resistance |
| 0501214907 | HOSE PIPE | Routes fluid between valve and cooler |
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