Overview
The ZF 4657.183.223 LOOSE PARTS kit is a critical service component designed specifically for the WG210 series transmission. This genuine OEM assembly contains the essential fasteners, seals, and positioning elements required to secure the main housing sections during rebuild or overhaul. The SKU 4657.183.223 sits at the interface between the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT, ensuring proper alignment and clamping force. Without this loose parts set, the structural integrity of the entire gearbox assembly is compromised, making it an indispensable item for any professional transmission rebuild.
Symptoms of Failure
- External oil seepage at housing joints: When the fasteners and sealing elements in this kit degrade, pressurized transmission fluid escapes between the 4657201170: HOUSING REAR PART and the main case, leaving visible wet spots on the bell housing.
- Intermittent gear engagement hesitation: Worn locating pins or loose cap screws allow micro-movement between housing sections, causing misalignment of the clutch drum assembly and delayed shifts under load.
- Abnormal vibration during torque converter lockup: A failing loose parts kit cannot maintain the rigid connection between the 4657298102: HOUSING REAR SECTION and the front housing, leading to harmonic vibrations that resonate through the driveline at highway speeds.
- Increased metallic debris in oil pan: Gradual fretting wear from loose housing bolts generates fine steel particles that contaminate the hydraulic circuit, accelerating wear on valve bodies and clutches.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.183.223 |
| Kit Contents | Cap screws, cylindrical pins, fixing plates, screen sheets |
| Material Grade | Steel (10.9 tensile), nitrile rubber seals |
| Weight (estimated) | 0.85 kg (1.87 lbs) |
| Thread Pitch | M10 x 1.5 (primary fasteners) |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 4657.183.223 (genuine) |
Compatibility
This loose parts kit is engineered for the ZF WG210 series, but its fastening geometry also applies to the WG180 and WG200 variants due to shared housing bolt patterns. It is directly compatible with the WG210, WG200, and WG180 models. The kit integrates with the 0631306816: CYLINDRICAL PIN for precise dowel alignment and the 0636100801: CAP SCREW for securing the front housing. Always verify your transmission serial number against ZF documentation before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4657201170 | HOUSING REAR PART | Rear housing section for output shaft |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing centering |
| 0636100801 | CAP SCREW | M10 fastener for front housing attachment |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for suction line |
| 0636100803 | CAP SCREW | M12 fastener for rear housing attachment |
