Overview
The ZF 4616.301.036 GASKET for WG 65 is a precision-engineered sealing component designed to maintain hydraulic integrity within the WG 65 series transmission. Positioned between the transmission housing and the valve body or cover assembly, this OEM genuine gasket prevents pressurized oil from escaping and keeps contaminants out of critical fluid passages. The SKU 4616.301.036 is manufactured to ZF’s exacting tolerances, ensuring a leak-free seal even under high-temperature, high-vibration operating conditions. When installed alongside a 4616101066 TRANSMISSION HOUSING, this gasket forms a critical barrier that sustains clutch engagement pressure and lubrication flow throughout the gear train.
Symptoms of Failure
- External oil seepage at the housing joint: A degraded 4616.301.036 gasket often causes visible ATF drips or wet spots around the WG 65’s mating surfaces, especially after extended highway operation.
- Erratic shift timing or gear slipping: When this gasket fails, internal fluid pressure drops, leading to delayed clutch pack engagement and intermittent slipping during acceleration.
- Contaminated transmission fluid: A compromised seal allows dirt and moisture to enter the hydraulic circuit, turning the ATF dark or milky and accelerating wear on internal components like the 0636011118 HEXAGON SCREW fasteners.
- Overheating transmission: Loss of sealing integrity reduces oil flow to the cooler circuit, causing the WG 65 to run hotter than normal and triggering warning codes.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4616.301.036 |
| Material | Nitrile rubber (NBR) with fiber reinforcement |
| Thickness | 1.5 mm (estimated) |
| Outer Diameter | 120 mm (estimated) |
| Inner Diameter | 85 mm (estimated) |
| Weight | 0.04 kg |
| OEM Reference | ZF 4616.301.036 |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This gasket is specifically designed for the ZF WG 65 series transmission, but it also fits several other ZF powershift models that share the same housing architecture. Compatible transmissions include the WG 65, WG 80, WG 120, WG 150, WG 180, and WG 200 series. The 4616.301.036 gasket is a direct replacement for units equipped with a 4616301307 HOUSING or a 4616301309 HOUSING. Always verify the housing casting number before installation to ensure a proper seal.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101066 | TRANSMISSION HOUSING | Main structural casing for gear and clutch assembly |
| 0636011118 | HEXAGON SCREW | Secures housing and valve body sections |
| 4616301307 | HOUSING | Intermediate housing for clutch pack support |
| 4616301309 | HOUSING | Rear housing for output shaft bearing retention |
| 0636011038 | HEXAGON SCREW | Fastener for oil pan or cover plate |
| 0636016015 | HEXAGON SCREW | High-tensile bolt for bell housing attachment |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for precise housing positioning |
| 0634313118 | O-RING | Static seal for hydraulic line connections |
| 0636304019 | SCREW PLUG | Closes oil drain or test ports |
| 0634801152 | SEALING RING | Metal-reinforced seal for high-pressure circuits |
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