Overview
The ZF 4642.199.761 LOOSE PARTS kit is a critical service component engineered specifically for the WG 201 series transmission. This genuine OEM assembly contains the essential fasteners, seals, and small hardware required to secure internal sub-assemblies during a rebuild or major repair. Positioned within the transmission’s main housing, this kit ensures that loose components—such as valve bodies, clutch packs, and bearing retainers—remain properly torqued and aligned under high-load conditions. The SKU 4642.199.761 is often ordered alongside a new TRANSMISSION HOUSING (4644101160) to guarantee a complete sealing surface and eliminate any risk of hardware migration.
Symptoms of Failure
- Transmission oil seepage at housing joints: When the loose parts in this kit fatigue, the clamping force on gaskets diminishes, leading to slow, persistent oil leaks around the bell housing or main case.
- Intermittent gear engagement delay: Worn or stretched fasteners can allow internal shift rails to shift slightly out of alignment, causing a noticeable lag when selecting forward or reverse gears.
- Abnormal metallic rattling from the transmission sump: A loose threaded bushing or screw plug inside the assembly can vibrate against the housing, producing a distinct rattle that worsens at low RPM.
- Hard shifting or clutch slip under load: If the kit’s retaining hardware fails to hold the valve body securely, hydraulic pressure drops, resulting in harsh shifts or momentary loss of drive torque.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4642.199.761 |
| OEM Reference | ZF 4642.199.761 |
| Material | Steel (zinc-plated) / Nitrile rubber seals |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 180 x 120 x 40 mm |
| Compatible Housing | 4644301323: TRANSMISSION HOUSING |
| Threaded Insert | 4644301189: THREADED BUSH |
| Sealing Plug | 4475280043: SCREW PLUG |
Compatibility
This loose parts kit is designed for the ZF WG 201 series, but its hardware dimensions also suit the WG 180 and WG 200 families when used with the correct housing. It is a direct fit for all WG 201 variants, including the WG 201 C, WG 201 E, and WG 201 F models. For installations requiring a new main case, pair this kit with the 4644101160: TRANSMISSION HOUSING to maintain OEM tolerances. The kit also integrates with the 4644301189: THREADED BUSH and 4475280043: SCREW PLUG to seal auxiliary ports.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural case for gear train |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing for WG 201 variants |
| 4644301189 | THREADED BUSH | Reinforced insert for high-torque fasteners |
| 4475280043 | SCREW PLUG | Seals oil passages in the housing |
| 0634306198 | O-RING | Prevents fluid leaks at joint interfaces |
| 0730365067 | TYPE PLATE | Identification tag for transmission model |
| 4644301161 | COVER PLATE | Protects internal components from debris |
| 0636100621 | HEXAGON SCREW | Secures cover plate to housing |
| 0631610020 | SET SCREW | Locks adjustment mechanisms in place |
| 0501218540 | BREATHER | Equalizes internal pressure and vents moisture |
