Overview
The ZF 4616.301.263 CONVERTER HOUSING is a critical structural component designed specifically for the WG 65 Series transmission family. This OEM genuine part encloses the torque converter assembly, providing precise alignment and sealing between the engine flywheel housing and the main transmission case. The converter housing (SKU: 4616.301.263) absorbs torsional loads and maintains hydraulic fluid containment under high-pressure operating conditions. It serves as the primary mounting interface for the converter bell housing, ensuring concentricity between the pump impeller and turbine assembly. This housing is precision-machined from high-strength cast alloy to withstand thermal expansion and mechanical stress during heavy-duty commercial vehicle operation.
Symptoms of Failure
- Torque converter housing oil leaks at bell housing seam – Visible fluid weeping or dripping from the mating surface between the converter housing and transmission case, often accompanied by a burnt transmission fluid smell.
- Gear engagement hesitation or slipping under load – Worn housing bores cause misalignment of the converter pump, leading to delayed clutch pack engagement and intermittent power loss during acceleration.
- Abnormal vibration or knocking from bell housing area – Cracks or warpage in the 4616.301.263 housing allow the converter to shift axially, producing metallic contact sounds and driveline shudder at low RPM.
- Fluid contamination from housing debris – Internal corrosion or pitting releases metallic particles into the hydraulic circuit, causing valve body sticking and erratic shift patterns.
Technical Specifications
| Part Number | 4616.301.263 |
| Material | Cast Aluminum Alloy (A356-T6) |
| Weight | 14.2 kg (31.3 lbs) |
| Overall Length | 385 mm |
| Bolt Hole Pattern | 8x M12 on 180 mm PCD |
| OEM Reference | ZF 4616.301.263 |
| Max Operating Pressure | 18 bar (261 psi) |
| Temperature Range | -40°C to +120°C |
Compatibility
This converter housing is engineered for the ZF WG 65 Series transmission platform, which includes the WG65, WG80, WG100, WG120, WG150, WG180, and WG200 models. The 4616.301.263 part is specifically validated for WG65 applications in municipal buses, refuse trucks, and medium-duty construction vehicles. It replaces earlier housing variants with improved oil gallery routing and reinforced mounting bosses. Always verify transmission serial number against ZF technical bulletins before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101065 | TRANSMISSION HOUSING | Main structural case for gear train and valve body |
| 0636011038 | HEXAGON SCREW | M12x35 bolt for housing-to-case fastening |
| 0636011118 | HEXAGON SCREW | M10x25 bolt for converter cover retention |
| 0636016015 | HEXAGON SCREW | M8x20 bolt for oil pan attachment |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 0634313118 | O-RING | Seals converter housing to transmission case |
| 0636304019 | SCREW PLUG | Closes oil drain port in housing |
| 0634801152 | SEALING RING | Copper gasket for plug sealing |
| 0732611049 | FILTER INSERT | Inline hydraulic filter for converter circuit |
| 0634303718 | O-RING | Seals filter housing to converter housing |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
