Overview
The ZF 4642.199.346 LOOSE PARTS kit is a critical service component engineered specifically for the WG 200 series transmission. This OEM genuine part consolidates essential fasteners, seals, and small hardware elements that secure internal assemblies within the gearbox. Positioned within the main valve body and clutch housing interface, the 4642.199.346 ensures proper clamping force and fluid containment during high-torque operations. Without this loose parts set, even a perfectly rebuilt transmission risks premature failure due to vibration loosening or fluid bypass. The SKU 4642.199.346 is factory-matched to ZF’s original tolerances, guaranteeing a direct replacement without modification.
Symptoms of Failure
- Intermittent gear slippage under load: When the 4642.199.346 loose parts degrade, fasteners may loosen, causing clutch pack clearance to fluctuate and resulting in delayed engagement or slipping during acceleration.
- External oil seepage at housing joints: Worn seals or missing hardware from this kit allow transmission fluid to weep past the TRANSMISSION HOUSING and TRANSMISSION HOUSING interfaces, leaving visible drips on the bell housing.
- Abnormal rattling or metallic noise: Loose components inside the transmission create a distinct rattle at idle or low RPM, often misdiagnosed as bearing wear when the root cause is failed retention hardware from the 4642.199.346 set.
- Erratic shift timing: If the loose parts include valve body bolts, hydraulic pressure can bleed past gaskets, causing harsh or delayed shifts that worsen as fluid temperature rises.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4642.199.346 |
| OEM Reference | ZF WG200 Series |
| Material Composition | Steel alloy with zinc-nickel plating |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Dimensions (packaged) | 150 x 100 x 40 mm |
| Included Components | Bolts, washers, sealing rings, retaining clips |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 4642.199.346 loose parts kit is designed for the WG 200 transmission family, including the WG180, WG200, and WG210 variants. It is also backward-compatible with select earlier WG series models that share the same fastener pattern and seal groove dimensions. Always verify the housing casting number against the TYPE PLATE before installation. For applications requiring additional sealing, pair this kit with the COVER PLATE to ensure complete fluid integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101223 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301225 | TRANSMISSION HOUSING | Secondary housing section for valve body |
| 0730365125 | TYPE PLATE | Identification plate with model/serial data |
| 4644301298 | COVER PLATE | Seals access opening to clutch pack |
| 0634306525 | O-RING | Hydraulic seal between housing sections |
| 0636305026 | SCREW PLUG | Seals fluid drain/fill ports |
| 4644301279 | SCREEN SHEET | Filters debris from hydraulic circuit |
| 4644301088 | SEALING CAP | Protects exposed shaft ends from contamination |
| 4644106319 | SHIFT SYSTEM | Controls gear selection via hydraulic spools |
| 4644159300 | SHIFT SYSTEM | Alternate shift system for WG200 variants |
