Overview
The ZF 4657.183.313 LOOSE PARTS for WG210 is a critical service kit designed to restore the internal sealing and structural integrity of your ZF WG210 series transmission. This OEM genuine part, identified by SKU 4657.183.313, contains the specific loose components—including seals, gaskets, and retaining elements—that secure the hydraulic circuit within the main valve body and clutch housing assembly. When installed alongside the 4657101082: TRANSMISSION HOUSING, this kit ensures that pressurized oil is correctly routed to the clutch packs, preventing cross-leakage and maintaining consistent shift quality. Without this kit, the transmission housing cannot achieve the necessary pressure seal for reliable operation.
Symptoms of Failure
- Oil leaks at the housing seam: Worn loose parts cause visible fluid seepage between the 4657201166: HOUS.FRONT SECT and the main case, leading to low fluid levels and eventual overheating.
- Delayed or harsh gear engagement: Degraded seals within the 4657.183.313 kit allow pressure loss, resulting in a noticeable lag when shifting from Neutral to Drive or Reverse.
- Erratic shift timing under load: When the loose parts fail, the transmission may slip between gears during uphill climbs or heavy hauling, as the hydraulic control system cannot maintain steady pressure.
- Contaminated transmission fluid: Internal debris from deteriorating rubber components mixes with the oil, causing a burnt smell and darkening of the fluid.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.183.313 |
| OEM Reference | ZF 4657.183.313 |
| Material Composition | Nitrile rubber (NBR) seals, hardened steel retaining rings |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions (Kit) | 180 mm x 120 mm x 40 mm |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This genuine ZF loose parts kit is engineered primarily for the WG 210 Series transmissions, which are widely used in medium-duty commercial vehicles and off-highway equipment. Based on its design and sealing profile, the 4657.183.313 is also compatible with the WG180 and WG200 series models that share the same housing architecture. It integrates directly with the 4657201170: HOUSING REAR PART and the 4657298102: HOUSING REAR SECTION to form a complete, leak-free assembly. Always verify your transmission serial number against ZF’s parts catalog to confirm fitment for older WG190 variants.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing that houses all internal components |
| 4657201166 | HOUS.FRONT SECT | Front section of the housing supporting the input shaft |
| 4657201170 | HOUSING REAR PART | Rear housing section that encloses the output shaft |
| 4657298102 | HOUSING REAR SECTION | Additional rear housing segment for extended gear sets |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise housing mating |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retaining plate for internal bearing preload |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil sump protection |
| 4657301033 | SCREEN SHEET | Secondary filter screen for high-pressure circuits |
| 0636100803 | CAP SCREW | High-torque fastener for rear housing attachment |
