Overview
The ZF 4642.199.392 LOOSE PARTS for WG200 is a critical service kit designed to restore the internal integrity of your ZF WG200 series transmission. This OEM genuine part, identified by SKU 4642.199.392, contains the essential loose hardware and fasteners required during a major overhaul or rebuild of the transmission assembly. It specifically secures the valve body and internal hydraulic circuits, ensuring proper fluid routing and pressure retention. When paired with a new TRANSMISSION HOUSING (4644101222) or a TRANSMISSION HOUSING (4644301226), this kit guarantees that all mounting points meet factory torque specifications, eliminating the risk of component shift during high-torque operation.
Symptoms of Failure
- Erratic shift timing and delayed engagement: When the loose parts wear or become distorted, internal valve bodies can shift, causing delayed gear engagement and harsh shifts under load.
- External oil seepage at housing joints: Degraded fasteners or missing hardware from this kit lead to uneven clamping force, resulting in oil leaks around the transmission housing mating surfaces.
- Transmission slipping in higher gears: Loose internal components allow hydraulic pressure to bleed off, causing the transmission to slip, particularly in 4th and 5th gear during highway driving.
- Unusual metallic rattling from the bell housing: Worn or missing loose parts can allow internal components to vibrate, producing a distinct rattling noise that intensifies with engine RPM.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4642.199.392 |
| OEM Reference | ZF 4642.199.392 |
| Material | High-tensile steel with zinc-nickel plating |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions | 120 mm x 80 mm x 30 mm (kit packaging) |
| Compatible Housing | 4644101222 & 4644301226 |
| Identification | Use with TYPE PLATE (0730365067) for verification |
| Mounting Hardware | Includes GROOVED STUD (0631311009) |
Compatibility
This ZF 4642.199.392 LOOSE PARTS kit is engineered for the WG200 series transmissions, including the WG180, WG200, and WG210 variants. It is also compatible with select ZF Ecomat 2HP and 4HP models that share the same internal fastener pattern. The kit is essential when replacing the COVER PLATE (4644301298) or installing a new ADAPTER (4475280078). Always verify your transmission serial number against the TYPE PLATE (0730365067) before ordering to ensure correct fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101222 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301226 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Alignment stud for valve body installation |
| 4644301298 | COVER PLATE | Seals the hydraulic control unit |
| 0634306525 | O-RING | Hydraulic seal for pressure circuits |
| 0636305026 | SCREW PLUG | Closes oil passages during service |
| 4475280078 | ADAPTER | Converts housing for different bell housings |
| 4644301279 | SCREEN SHEET | Filter mesh for oil sump |
| 4644301088 | SEALING CAP | Protects unused ports from debris |
