Overview
The ZF 4644.183.010 LOOSE PARTS kit is a critical service component designed specifically for the WG 201 series transmission. This OEM genuine assembly includes all necessary fasteners, seals, and positioning elements required to secure internal components within the main housing. Positioned within the torque flow path, the 4644.183.010 ensures that the planetary gear sets and clutch packs remain properly aligned under high-load conditions. The SKU 4644.183.010 is often ordered alongside a replacement 4644101160 TRANSMISSION HOUSING to guarantee a complete rebuild.
Symptoms of Failure
When the 4644.183.010 LOOSE PARTS begin to degrade, operators typically notice three distinct failure modes. First, intermittent gear slippage during upshifts occurs as the retaining hardware loses its clamping force. Second, external oil seepage around the bell housing mating surface becomes visible, often mistaken for a main seal leak. Third, audible rattling or knocking from the transmission sump indicates that loose fasteners are migrating within the assembly. Ignoring these signs can lead to catastrophic damage to the 4644301323 TRANSMISSION HOUSING.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.183.010 |
| Material Composition | Steel alloy with zinc-nickel plating |
| Overall Length | 85 mm |
| Thread Diameter | M10 x 1.5 |
| Weight | 0.32 kg |
| OEM Reference | ZF 4644.183.010 |
| Torque Specification | 45 Nm + 90° angle |
Compatibility
This LOOSE PARTS kit is engineered for the ZF WG 201 series, but it also fits the WG180, WG200, and WG210 variants due to shared bolt patterns. It is directly compatible with transmissions that utilize the 4644301189 THREADED BUSH and the 4475280043 SCREW PLUG in their oil galleries. Always verify the housing casting number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 4644301189 | THREADED BUSH | Wear insert for shift fork pivot |
| 4475280043 | SCREW PLUG | Seals oil passage access ports |
| 0634306198 | O-RING | Hydraulic seal for valve body |
| 0730365067 | TYPE PLATE | Identification tag for transmission |
| 4644301161 | COVER PLATE | Protects clutch access opening |
| 0636100621 | HEXAGON SCREW | Fastener for housing joints |
| 0631610020 | SET SCREW | Locks adjustment sleeves |
| 0501218540 | BREATHER | Equalizes internal pressure |
