Overview
The ZF 4644.199.884 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 200 Series transmission. This OEM genuine part consolidates essential wear components that seal, secure, and protect internal transmission functions. Positioned within the main housing assembly, this kit ensures that the hydraulic circuits and rotating elements remain free from contamination and pressure loss. The SKU 4644.199.884 is a factory-matched set, guaranteeing that every gasket, fastener, and sealing element meets ZF’s original tolerances. When paired with a new TRANSMISSION HOUSING (4644101177) or a TRANSMISSION HOUSING (4644301229), this loose parts kit restores the transmission to its factory assembly condition.
Symptoms of Failure
When the components within the ZF 4644.199.884 LOOSE PARTS kit degrade, operators will notice distinct performance issues. External oil seepage around the housing mating surfaces is the most common indicator, often appearing as wet streaks on the bell housing. Intermittent gear slippage under load occurs when internal seals lose elasticity, allowing hydraulic pressure to bleed off. Contaminated transmission fluid with metallic particles signals that loose fasteners or degraded sealing elements have allowed debris ingress. Abnormal whining or grinding noises during cold starts typically indicate that the included O-rings and gaskets have hardened, reducing lubrication flow to critical bearings.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4644.199.884 |
| OEM Reference | ZF WG200 Series |
| Kit Contents | Seals, Gaskets, Fasteners, O-Rings |
| Material Composition | Nitrile Rubber, Steel, Aluminum |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 180 x 120 x 40 mm |
| Operating Temperature Range | -40°C to +120°C |
| Compatible Housing | 4644101177 / 4644301229 |
| Required Fastener | GROOVED STUD (0631311009) |
| Identification | TYPE PLATE (0730365067) |
Compatibility
This loose parts kit is engineered for the ZF WG 200 Series transmissions, including the WG180, WG200, and WG210 variants. It directly interfaces with the main housing castings and is essential for any rebuild involving the COVER PLATE (4644303060) or the COVER PLATE (4644303061). The kit also supports the installation of the O-RING (0634306525) and the SCREW PLUG (0636305026) for sealing the housing ports. For ventilation, the BREATHER (0501316470) is a recommended companion part, while the SCREEN SHEET (4644301279) protects the oil intake from debris.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101177 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301229 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Fastener for housing alignment |
| 4644303060 | COVER PLATE | Seals the rear housing opening |
| 4644303061 | COVER PLATE | Alternate cover plate variant |
| 0634306525 | O-RING | Hydraulic seal for cover plate |
| 0636305026 | SCREW PLUG | Drain or fill port plug |
| 0501316470 | BREATHER | Pressure equalization valve |
| 4644301279 | SCREEN SHEET | Oil intake debris filter |
