Overview
The ZF 4644.183.135 LOOSE PARTS kit is a critical service component designed specifically for the WG 200 series transmission. This OEM genuine assembly includes all necessary fasteners, seals, and small hardware required to secure and seal the transmission housing during rebuild or maintenance. Positioned within the main casing assembly, this kit ensures that the TRANSMISSION HOUSING and TRANSMISSION HOUSING remain properly aligned and leak-free under high torque loads. The SKU 4644.183.135 is factory-matched to the WG200 platform, eliminating guesswork during installation and reducing downtime for fleet operators.
Symptoms of Failure
When the ZF 4644.183.135 LOOSE PARTS begin to degrade, operators may notice specific warning signs. Oil seepage around the main housing joint is a common early indicator, often mistaken for a gasket failure. Transmission gear slipping under load can occur if fasteners loosen, allowing internal components to shift. Unusual vibration or rattle from the bell housing area suggests that retaining hardware has fatigued. Finally, difficulty engaging park or reverse may point to misalignment caused by worn loose parts, particularly when paired with a failing TYPE PLATE.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.183.135 |
| Material | Steel alloy with zinc plating (fasteners); NBR (seals) |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 180 mm x 120 mm x 40 mm |
| OEM Reference | ZF 4644.183.135 |
| Thread Size (primary bolts) | M10 x 1.5 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This LOOSE PARTS kit is engineered primarily for the ZF WG 200 series transmissions, including models WG200, WG210, and WG220. It also fits select variants of the WG180 and WG190 when used with the correct COVER PLATE. Always verify your transmission serial number against the ZF parts catalog to confirm fitment. The kit is not backward-compatible with older WG150 or WG160 units without adapter hardware.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101275 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301406 | TRANSMISSION HOUSING | Secondary housing section for torque converter |
| 0730301612 | TYPE PLATE | Identification plate with transmission specs |
| 4644301298 | COVER PLATE | Seals the access port on the housing |
| 0634306323 | O-RING | Fluid seal between housing sections |
| 0636305026 | SCREW PLUG | Closes drain or fill ports |
| 4644301279 | SCREEN SHEET | Filter mesh for fluid debris |
| 4644301088 | SEALING CAP | Protects unused housing openings |
| 4644106328 | SHIFT SYSTEM | Controls gear selection mechanism |
| 4644109045 | PARKING BRAKE | Locks output shaft when parked |
