Overview
The ZF 4642.199.807 LOOSE PARTS set is a critical service kit designed specifically for the WG 201 series transmission. This assembly contains the necessary fasteners, seals, and positioning components required to secure internal hydraulic and mechanical elements within the gearbox housing. As an OEM genuine part, SKU 4642.199.807 ensures that all loose components meet ZF’s exacting tolerances for fit and durability. This kit typically includes bolts, washers, and retaining clips that anchor the valve body and clutch packs, preventing axial movement during high-torque operations. Without this set, the transmission cannot maintain proper alignment of its rotating assemblies.
Symptoms of Failure
- Intermittent gear slippage under load: When the loose parts kit degrades, fasteners may loosen, causing clutch packs to shift and slip during acceleration.
- Hydraulic fluid seepage at housing joints: Worn seals within the 4642.199.807 set lead to oil weeping around the transmission housing mating surfaces.
- Unusual metallic rattling from the bell housing: Loose retaining components allow internal shafts to vibrate, producing a distinct rattle at idle or low RPM.
- Delayed engagement when shifting from Park to Drive: A failing kit can cause misalignment of the valve body, resulting in a 2-3 second lag before gear engagement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4642.199.807 |
| Material Composition | Steel alloy with zinc-nickel plating |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| OEM Reference | ZF 4642.199.807 |
| Thread Pitch | M8 x 1.25 (primary fasteners) |
| Temperature Range | -40°C to +150°C |
| Hardness Rating | HRC 32-38 |
Compatibility
This genuine ZF 4642.199.807 LOOSE PARTS kit is engineered for the WG 201 transmission series. It is also compatible with the WG 180 and WG 200 models that share the same modular housing architecture. The kit interfaces directly with the 4644101160: TRANSMISSION HOUSING and the 4644301323: TRANSMISSION HOUSING, providing the necessary retention for internal components. Additionally, it works in conjunction with the 4644301189: THREADED BUSH to secure hydraulic passages, and the 4475280043: SCREW PLUG seals the final access port. Always verify your transmission’s serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 4644301189 | THREADED BUSH | Provides threaded anchor points for fasteners |
| 4475280043 | SCREW PLUG | Seals oil passages and inspection ports |
| 0634306198 | O-RING | Prevents fluid leaks at joint interfaces |
| 0730365067 | TYPE PLATE | Identification plate with transmission specs |
| 4644301161 | COVER PLATE | Protects internal components from debris |
| 0636100621 | HEXAGON SCREW | Secures housing and cover assemblies |
| 0631610020 | SET SCREW | Locks adjustment positions on valve body |
| 0501218540 | BREATHER | Equalizes internal pressure during operation |
