Overview
The ZF 4616.303.175 SPRING WASHER is a precision-engineered OEM genuine component designed specifically for the WG 65 series transmission. This critical fastener element maintains consistent axial tension on bolted joints within the valve body and clutch housing assemblies, preventing loosening under high-vibration conditions. The SKU 4616.303.175 ensures exact fitment and load-bearing characteristics required for ZF’s heavy-duty planetary gear systems. When installed alongside a 4616105417 VALVE, this spring washer guarantees proper sealing force distribution across the hydraulic control circuit.
Symptoms of Failure
- Intermittent gear slipping under load — A worn spring washer reduces clamping force on the 0501319251 SOLENOID VALVE, causing pressure fluctuations in clutch packs.
- Hydraulic fluid seepage at valve body interfaces — Loss of elastic recovery allows micro-gaps to form, leading to slow oil leaks around the 0636302013 SCREW PLUG.
- Abnormal transmission noise during torque converter lockup — Insufficient preload on the 0634801038 SEALING RING permits axial play that generates metallic rattling sounds.
- Erratic shift timing in cold conditions — Degraded spring rate alters the clamping force on solenoid mounting bolts, delaying hydraulic response.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.303.175 |
| Inner Diameter | 10.2 mm |
| Outer Diameter | 18.5 mm |
| Thickness (Free) | 1.75 mm |
| Material | Spring Steel (DIN 17222), Zinc-Nickel Plated |
| Load Capacity | 1,200 N at 0.5 mm deflection |
| Weight | 3.2 g |
| OEM Reference | ZF 4616.303.175 |
Compatibility
This spring washer is engineered for the ZF WG 65 series, but its dimensional profile also suits the following transmissions requiring M10 bolt retention: WG180, WG200, WG250, and WG300 series. Always verify the bolt pattern on your valve body or clutch housing before installation. The part is commonly used in conjunction with 0636010047 HEXAGON SCREW and 0636101020 CAP SCREW assemblies.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105417 | VALVE | Hydraulic flow control in valve body |
| 0501319251 | SOLENOID VALVE | Electro-hydraulic shift actuation |
| 0636302013 | SCREW PLUG | Seals oil passages in housing |
| 0634801038 | SEALING RING | Prevents fluid bypass at joints |
| 4616305078 | CONSOLE | Mounting bracket for shift mechanism |
| 0636010047 | HEXAGON SCREW | Fastener for valve body attachment |
| 0636101020 | CAP SCREW | High-torque bolt for clutch packs |
| 0630001010 | WASHER | Load distribution under bolt heads |
| 0637006015 | HEXAGON NUT | Locking nut for threaded studs |
| 0637842523 | SCREW-IN SLEEVE | Alignment guide for shift rods |
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