Overview
The ZF 4644.199.242 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 180 series transmission. This OEM genuine part contains the necessary loose components required to secure and seal the transmission housing during rebuilds or major repairs. Positioned at the interface between the main casing and the valve body, this kit ensures proper clamping force and fluid containment. The SKU 4644.199.242 is factory-matched to ZF’s original tolerances, eliminating the guesswork of sourcing individual fasteners and seals. When paired with a replacement TRANSMISSION HOUSING (4644101043) or a TRANSMISSION HOUSING (4644301194), this kit restores the structural integrity of the gearbox assembly.
Symptoms of Failure
When the components in this loose parts kit degrade, operators typically notice three distinct failure modes. First, external oil seepage at the housing joint becomes visible, often mistaken for a gasket failure. Second, intermittent gear slippage under load occurs as clamping force diminishes, allowing the valve body to shift slightly. Third, rattling noises during gear changes indicate loose fasteners that have backed out over time. These symptoms are common search queries for technicians diagnosing WG180 transmission issues. Replacing the kit alongside a new TYPE PLATE (0730365067) ensures all identification and sealing points are refreshed simultaneously.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4644.199.242 |
| OEM Reference | ZF 4644.199.242 |
| Material Composition | Steel alloy with zinc-nickel plating |
| Kit Contents | Bolts, washers, and positioning dowels |
| Weight | 0.85 kg (1.87 lbs) |
| Thread Pitch | M10 x 1.5 (primary fasteners) |
| Torque Specification | 45 Nm ± 3 Nm (dry) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This loose parts kit is engineered for the ZF WG 180 series, but its application extends to closely related models. The WG180, WG200, and WG150 transmissions share the same housing bolt pattern and sealing geometry. It is also compatible with the WG 180-1 and WG 180-2 variants found in mid-range commercial vehicles. For installations requiring additional sealing, pair this kit with a SEALING RING (0634801098) or a SEALING RING (0634801250). The GROOVED STUD (0631311009) is also frequently ordered alongside this kit for alignment purposes during reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101043 | TRANSMISSION HOUSING | Main casing for gear train assembly |
| 4644301194 | TRANSMISSION HOUSING | Alternate housing variant for WG180 |
| 0730365067 | TYPE PLATE | Identification plate with serial number |
| 0631311009 | GROOVED STUD | Alignment stud for housing positioning |
| 4644303060 | COVER PLATE | Seals the rear access port |
| 4644303061 | COVER PLATE | Alternate cover plate for PTO openings |
| 0634801098 | SEALING RING | Static seal for housing flanges |
| 0634801250 | SEALING RING | High-temp seal for oil passages |
| 0636305026 | SCREW PLUG | Drain plug for oil pan |
| 0636305019 | SCREW PLUG | Fill plug for transmission housing |
