Overview
The ZF 0501.309.380 ANGLE RING is a precision-engineered sealing component designed for the WG 150 series transmission. This OEM genuine part functions as a critical interface between the rotating shaft and the stationary housing, ensuring proper alignment and preventing lubricant migration within the gear train assembly. The SKU 0501.309.380 sits directly on the output shaft flange, where it maintains a tight seal against the TRANSMISSION HOUSING to preserve hydraulic pressure and protect internal components from contamination. Manufactured to ZF’s exacting tolerances, this angle ring is essential for maintaining the structural integrity of the WG150’s lubrication system during high-torque operations.
Symptoms of Failure
- External oil seepage at the output flange: A worn 0501.309.380 angle ring often causes visible transmission fluid leaks around the rear housing joint, particularly after extended highway driving or under heavy load conditions.
- Gradual gear engagement delay: When the angle ring loses its sealing capacity, hydraulic pressure drops can produce a noticeable lag when shifting between forward and reverse gears, especially in cold weather.
- Contaminated transmission fluid: A degraded seal allows dirt and moisture ingress, leading to dark, gritty fluid that accelerates wear on internal components like the TRANSMISSION HOUSING.
- Whining noise from the gearbox: Insufficient lubrication due to fluid loss through a failing angle ring creates metallic friction sounds during acceleration or deceleration.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.309.380 |
| Material | Hardened steel with nitrile rubber sealing lip |
| Outer Diameter | 120 mm (estimated) |
| Inner Diameter | 90 mm (estimated) |
| Thickness | 12 mm (estimated) |
| Weight | 0.35 kg (estimated) |
| OEM Reference | ZF 0501.309.380 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF angle ring is primarily designed for the WG 150 series, but its sealing geometry also fits select models in the WG 180 and WG 200 families when used with the appropriate TYPE PLATE for identification. It is compatible with all WG150 variants, including the WG150-3, WG150-4, and WG150-6. For installations requiring additional retention, the GROOVED STUD is often used to secure the angle ring in place. Always verify housing bore dimensions against your specific transmission model before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4642301208 | TRANSMISSION HOUSING | Alternative housing variant for WG series |
| 0730365125 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Fastener for angle ring retention |
| 4642301168 | SCREEN SHEET | Filter mesh for oil intake |
| 4642301169 | SCREEN SHEET | Secondary filter screen variant |
| 0636100621 | HEXAGON SCREW | Mounting bolt for housing assembly |
| 0630361029 | SEALING CAP | Protective cover for unused ports |
| 4642306254 | ADAPTER | Interface component for auxiliary systems |
| 0634303340 | O-RING | Static seal for fluid connections |
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