Overview
The ZF 4656.183.207 LOOSE PARTS kit is a critical service component designed specifically for the WG 160 Series transmission. This genuine OEM assembly includes all necessary fasteners, seals, and small hardware required to secure and seal the main transmission housing sections during rebuild or repair. The SKU 4656.183.207 is positioned at the core of the gearbox, acting as the retention and sealing interface between the TRANSMISSION HOUSING and the HOUS.FRONT SECT. Without this loose parts set, the structural integrity of the WG160 assembly is compromised, leading to fluid migration and mechanical instability.
Symptoms of Failure
- Oil seepage at housing joints: When the 4656.183.207 loose parts degrade, you will notice transmission fluid weeping from the mating surfaces between the main housing and the HOUSING REAR PART.
- Gear slippage under load: Worn fasteners in this kit allow micro-movement between the HOUSING REAR SECTION and the main body, causing misalignment and intermittent power loss.
- Abnormal driveline vibration: Loose hardware from a failing 4656.183.207 set creates play in the housing stack, transmitting vibration through the chassis during acceleration.
- Contaminated transmission fluid: Failed seals within this loose parts kit allow debris ingress at the housing interfaces, visible as metallic particles in the oil pan.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4656.183.207 |
| Material Composition | Steel alloy with zinc-plated fasteners; nitrile rubber seals |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (Kit) | 280 mm x 180 mm x 40 mm |
| OEM Reference | ZF 4656.183.207 |
| Thread Pitch (Primary Bolts) | M10 x 1.5 |
| Torque Specification | 45 Nm ± 5 Nm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 4656.183.207 LOOSE PARTS kit is engineered for the WG 160 Series transmission. It is also compatible with the WG 180 and WG 200 models when used in conjunction with the correct TRANSMISSION HOUSING and HOUS.FRONT SECT. The kit fits all WG160 variants including the WG160-6, WG160-8, and WG160-10. For WG 220 or WG 250 applications, verify housing bolt patterns before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101057 | TRANSMISSION HOUSING | Main structural body of the gearbox |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4656201078 | HOUSING REAR PART | Rear housing section for output shaft |
| 4656298050 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 4656301148 | FIXING PLATE | Retention plate for bearing preload |
| 0636100817 | CAP SCREW | High-tensile bolt for housing fastening |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return |
| 4656301017 | SCREEN SHEET | Coarse mesh filter for sump protection |
| 0636100803 | CAP SCREW | M8 bolt for cover plate attachment |
