Overview
The ZF 4657.183.011 LOOSE PARTS kit is a critical service component engineered specifically for the WG 210 Series transmission. This genuine OEM assembly contains the essential hardware and small components required to secure and stabilize internal transmission elements during a rebuild or major repair. Positioned within the valve body and clutch pack region, this kit ensures that all loose fasteners, spacers, and retaining elements are replaced with factory-spec parts, preventing premature wear and maintaining hydraulic integrity. The SKU 4657.183.011 is the definitive reference for this exact loose parts set, guaranteeing a precise fit and OEM-grade durability for your ZF gearbox.
Symptoms of Failure
When the components within the 4657.183.011 loose parts kit begin to degrade or are not replaced during service, operators may encounter several distinct failure modes. Look for these specific symptoms to diagnose a worn or missing loose parts assembly:
- Intermittent gear slippage under load: Worn retaining clips or spacers can cause clutch packs to lose clamping force, leading to sudden slipping when torque is applied.
- Internal rattling or metallic noise from the transmission housing: Loose fasteners or dislodged screen sheets can create a distinct rattle, especially during gear changes or at idle.
- Hydraulic pressure fluctuations and delayed engagement: Degraded sealing elements within the loose parts kit can allow oil to bypass, causing erratic shift timing and a soft engagement from Neutral to Drive.
- Visible oil seepage around the valve body cover: Missing or damaged gaskets and retaining plates in this kit often result in slow, persistent oil leaks that worsen with temperature.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4657.183.011 |
| Product Type | Loose Parts Kit (Hardware & Retainers) |
| Material Composition | Steel, hardened alloy, and nitrile rubber seals |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4657.183.011 (Genuine) |
| Compatible Series | WG 210, WG 200, WG 180 |
| Thread Pitch (fasteners) | M8 x 1.25 (typical) |
Compatibility
This genuine ZF 4657.183.011 loose parts kit is designed for the WG 210 Series transmission but is also compatible with several closely related ZF models. It fits the WG 180, WG 200, and WG 210 gearboxes commonly found in medium-duty trucks, buses, and off-highway equipment. When performing a full overhaul, this kit is often paired with the 4657203002: OUTPUT FLANGE to ensure the driveline connection is secure, and with the 4657303029: SCREEN SHEET to maintain oil filtration integrity. For complete assembly, technicians should also verify the condition of the 4657101039: TRANSMISSION HOUSING and the 4657201028: HOUS.FRONT SECT to avoid any misalignment issues during reinstallation.
Related Components
Below is a comprehensive table of all related parts that are commonly replaced or inspected alongside the 4657.183.011 loose parts kit in a ZF WG210 rebuild:
| Part Number | Name | Function |
|---|---|---|
| 4657203002 | OUTPUT FLANGE | Connects transmission output shaft to driveshaft |
| 4657303029 | SCREEN SHEET | Filters hydraulic fluid in valve body area |
| 4657101039 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section housing for converter and pump |
| 4657201013 | HOUSING REAR PART | Rear housing section for output shaft support |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retains clutch pack or valve body components |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301035 | SCREEN SHEET | Secondary oil strainer for valve body |
