Overview
The ZF 4642.199.366 LOOSE PARTS kit is a critical service component designed specifically for the WG 150 series transmission. This genuine OEM assembly contains the necessary loose hardware and small components required to secure and stabilize internal transmission elements during a rebuild or major repair. Positioned within the main gear train housing, this kit ensures that all fasteners, spacers, and retaining parts meet ZF’s exacting tolerances for load distribution and vibration resistance. The SKU 4642.199.366 is a direct factory replacement, eliminating the guesswork of sourcing individual washers or bolts. When paired with a new TRANSMISSION HOUSING (4642101109) or a TRANSMISSION HOUSING (4642301205), this loose parts set restores the structural integrity of the WG150 assembly.
Symptoms of Failure
When the ZF 4642.199.366 LOOSE PARTS begin to degrade or are missing during reassembly, operators will notice distinct performance issues. Oil seepage at housing joints is a primary indicator, as worn fasteners cannot maintain proper clamp load. Intermittent gear slippage under load occurs when retaining components fail to keep shift forks aligned. Abnormal metallic rattling from the bell housing suggests loose hardware has migrated inside the transmission. Hard shifting or delayed engagement often results from compromised mounting points for the shift system. These symptoms are common in high-hour WG150 units where original loose parts have fatigued.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4642.199.366 |
| OEM Reference | ZF 4642.199.366 |
| Material Composition | Steel alloy with zinc plating (fasteners); nitrile rubber (seals) |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| Dimensions (kit) | 180 mm x 120 mm x 40 mm |
| Thread Pitch (primary bolts) | M8 x 1.25 |
| Hardness Rating | Grade 10.9 (fasteners) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
While the 4642.199.366 LOOSE PARTS kit is engineered for the WG 150 Series, its hardware dimensions also suit the WG 180 and WG 200 transmissions when used in conjunction with the correct housing. This kit is essential for any ZF WG-series rebuild where the original loose parts have been lost or damaged. Always verify that the TYPE PLATE (0730365125) matches your unit before installation. For additional retention, the GROOVED STUD (0631311009) is often replaced simultaneously to ensure proper alignment of the shift mechanism.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for WG150 gear set |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 0730365125 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Alignment stud for shift system mounting |
| 4642301168 | SCREEN SHEET | Oil filter screen for debris protection |
| 4642301169 | SCREEN SHEET | Secondary oil screen for fine filtration |
| 0636100621 | HEXAGON SCREW | Fastener for housing and cover plates |
| 4642301186 | SCREEN SHEET | High-flow screen for heavy-duty applications |
| 4644106324 | SHIFT SYSTEM | Complete shift fork and actuator assembly |
| 4644306598 | PLATE | Retaining plate for shift rail positioning |
