Overview
The ZF 4646.301.104 HOUSING (SKU: 4646.301.104) is a critical structural component engineered for the WG 250, WG 260, and WG 310 transmission series. This OEM genuine part serves as the primary enclosure that houses the gear train, clutch packs, and hydraulic control elements within the transmission assembly. Precision-machined to ZF’s exacting tolerances, this housing ensures correct alignment of rotating shafts and maintains the internal oil pressure necessary for smooth power delivery. When integrated with the 4646101062: TRANSMISSION HOUSING, it forms the complete outer shell that protects internal components from contamination and mechanical stress.
Symptoms of Failure
- External oil seepage around mating surfaces: A worn or cracked 4646.301.104 housing often manifests as persistent transmission fluid leaks near the bell housing or side flanges, leading to low fluid levels and eventual overheating.
- Abnormal gear engagement noise: When this housing loses its dimensional integrity, internal bearing bores can shift, producing a distinct whining or grinding sound during gear changes under load.
- Intermittent pressure loss in hydraulic circuits: Cracks in the housing casting can cause internal oil galleries to lose pressure, resulting in delayed clutch engagement or erratic shift timing.
- Visible vibration at the transmission mount points: Structural fatigue in the housing can transmit excessive vibration through the chassis, particularly during acceleration or when carrying heavy loads.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4646.301.104 |
| Material | High-grade aluminum alloy (A356-T6) |
| Dry Weight | 12.4 kg (27.3 lbs) |
| Overall Length | 485 mm |
| Overall Width | 320 mm |
| Overall Height | 210 mm |
| Bolt Hole Pattern | 8x M12 on 180 mm PCD |
| OEM Reference | ZF 4646.301.104 |
Compatibility
This housing is designed for the ZF WG series of powershift transmissions, specifically the WG 250, WG 260, and WG 310 models. It also fits select variants of the WG 180 and WG 200 series where the housing casting number matches. For proper installation, always pair this housing with the 4646301300: COVER and the 4646323018: CONNECTING PART to ensure correct sealing and structural rigidity. Use 0636015304: HEXAGON SCREW fasteners to secure the assembly to the transmission bell housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101062 | TRANSMISSION HOUSING | Main structural enclosure for gear train |
| 4646301300 | COVER | Seals the housing end face |
| 4646323018 | CONNECTING PART | Links housing to valve body |
| 0636015304 | HEXAGON SCREW | M12 fastener for housing assembly |
| 0636101828 | CAP SCREW | M10 bolt for cover attachment |
| 4646301100 | COVER SHEET | Thin gasket plate for oil sealing |
| 4646301112 | COVER SHEET | Alternate thickness gasket plate |
| 0730365067 | TYPE PLATE | Identification label for transmission |
| 0631311009 | GROOVED STUD | Alignment pin for housing positioning |
| 0636101193 | CAP SCREW | M8 bolt for accessory mounting |
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