Overview
The ZF 4616.301.005 CONVERTER COVER is a critical structural and sealing component designed specifically for the WG 65 Series transmission. This OEM genuine part encloses the torque converter assembly, protecting internal components from contamination while maintaining hydraulic pressure integrity. Positioned between the engine flywheel housing and the TRANSMISSION HOUSING, the converter cover (SKU: 4616.301.005) ensures precise alignment of the converter hub and pump drive. Manufactured to ZF’s exacting tolerances, this cover directly influences torque converter efficiency and overall drivetrain reliability in heavy-duty applications.
Symptoms of Failure
- Torque converter oil leaks at the bell housing seam: When the converter cover gasket surface degrades or the cover warps, transmission fluid seeps past the mating flange, often mistaken for a rear main seal leak.
- Intermittent gear slipping under load: A cracked or distorted 4616.301.005 cover can misalign the converter stator support, causing pressure loss and erratic clutch engagement during uphill hauls.
- Metallic debris in transmission pan: Worn cover bearing journals or fretting against the converter hub generates fine metal particles, visible during routine oil changes.
- Abnormal vibration at idle or takeoff: Loose or fatigued mounting points on the converter cover allow the torque converter to wobble, transmitting harsh NVH through the chassis.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4616.301.005 |
| Material | High-tensile cast iron (GGG-40) |
| Outer Diameter | 410 mm |
| Bolt Hole Pattern | 12 x M12 on 380 mm PCD |
| Weight | 8.7 kg |
| Surface Treatment | Phosphate coating for corrosion resistance |
| OEM Reference | ZF 4616.301.005 |
Compatibility
This converter cover is engineered for the ZF WG 65 Series transmission family, which includes models such as the WG180, WG200, and WG250. It is also compatible with select WG 65 variants used in municipal buses, refuse trucks, and construction equipment. Always verify the casting number on your existing cover before replacement. The 4616.301.005 interfaces directly with the HEXAGON SCREW (M12 x 1.5 x 40) and the HEXAGON SCREW (M10 x 1.25 x 30) for secure mounting. For the oil drain port, use the HEXAGON SCREW (M14 x 1.5) to prevent leaks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011038 | HEXAGON SCREW | M12 bolt for converter cover to housing |
| 0636011118 | HEXAGON SCREW | M10 bolt for cover flange |
| 0636016015 | HEXAGON SCREW | M14 drain plug screw |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for cover positioning |
| 0634313118 | O-RING | Seal between cover and housing |
| 0636304019 | SCREW PLUG | Oil fill port plug |
| 0634801152 | SEALING RING | Copper washer for drain plug |
| 0732611049 | FILTER INSERT | Internal oil strainer |
| 0634303718 | O-RING | Stator support seal |
