Overview
The ZF 4616.306.086 GASKET for WG 65 is a precision-engineered sealing component designed to maintain hydraulic integrity within the transmission housing assembly. This OEM genuine part, identified by SKU 4616.306.086, sits between the main casing and the valve body or cover plate, preventing pressurized oil from escaping and ensuring consistent clutch engagement. In the WG 65 series, this gasket directly interfaces with the 4616101066 TRANSMISSION HOUSING and the 0636011118 HEXAGON SCREW to form a leak-proof seal under high thermal and mechanical loads.
Symptoms of Failure
- External oil seepage at housing joints: When the 4616.306.086 gasket degrades, transmission fluid may weep from the seam between the 4616301307 HOUSING and the main casing, leaving visible drips on the bell housing.
- Erratic gear engagement or delayed shifts: A compromised gasket allows air ingress into the hydraulic circuit, causing soft or slipping shifts, particularly under load in WG 65 transmissions.
- Low fluid level without external puddles: Internal leakage past the gasket can redirect oil into non-pressurized cavities, leading to gradual fluid loss and eventual overheating of the 4616301309 HOUSING assembly.
- Contaminated transmission fluid: Failed gaskets may allow debris or moisture to enter the oil circuit, accelerating wear on clutches and bearings.
Technical Specifications
| Specification | Value |
|---|---|
| Material | Nitrile rubber (NBR) with fiber reinforcement |
| Thickness | 1.5 mm (nominal) |
| Outer Diameter | 120 mm (estimated for WG 65 interface) |
| Weight | 0.04 kg |
| OEM Reference | 4616.306.086 |
| Operating Temperature Range | -40°C to +150°C |
| Hardness (Shore A) | 70 ± 5 |
Compatibility
This gasket is specifically designed for the ZF WG 65 series transmission, but it also fits select models in the WG 180 and WG 200 families where the housing interface dimensions match. It is commonly used in off-highway vehicles, agricultural tractors, and construction equipment. For proper installation, always pair this gasket with the 0636011038 HEXAGON SCREW and the 0636016015 HEXAGON SCREW to achieve correct clamping force. The 0631306085 CYLINDRICAL PIN ensures alignment during reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101066 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 0636011118 | HEXAGON SCREW | Fastens housing sections together |
| 4616301307 | HOUSING | Intermediate cover for valve body |
| 4616301309 | HOUSING | Rear housing for output shaft |
| 0636011038 | HEXAGON SCREW | M10 bolt for housing attachment |
| 0636016015 | HEXAGON SCREW | M12 bolt for high-torque joints |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing |
| 0634313118 | O-RING | Seals hydraulic passages |
| 0636304019 | SCREW PLUG | Closes oil drain ports |
| 0634801152 | SEALING RING | Prevents leaks at threaded connections |
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