Overview
The ZF 4657.183.337 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 210 series transmission. This genuine OEM part contains the necessary loose components—including seals, retainers, and small hardware—required to secure and seal the transmission housing sections during a rebuild or overhaul. Positioned at the interface between the main housing and the front/rear sections, this kit ensures proper alignment and prevents fluid migration. The SKU 4657.183.337 is the exact OEM reference for this loose parts set, guaranteeing a factory-spec fit for your ZF WG210 gearbox.
Symptoms of Failure
- External oil seepage at housing joints: When the loose parts wear or the included seals degrade, you may notice oil weeping from the seam between the TRANSMISSION HOUSING and the front section.
- Intermittent gear slippage under load: Worn retaining hardware can allow slight movement of the HOUS.FRONT SECT, leading to misalignment and pressure loss in the clutch packs.
- Abnormal vibration or driveline noise: If the loose parts fail to secure the HOUSING REAR PART correctly, bearing preload can shift, causing a low-frequency hum during acceleration.
- Contaminated transmission fluid: A compromised seal from this kit can allow debris to enter through the HOUSING REAR SECTION interface, leading to premature wear of internal components.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.183.337 |
| Material Composition | Steel retainers with nitrile rubber seals |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Dimensions (L x W x H) | 180 mm x 120 mm x 40 mm |
| OEM Reference | ZF WG210 Series Loose Parts Kit |
| Included Fasteners | Compatible with CAP SCREW (0636100801) and CAP SCREW (0636100803) |
Compatibility
This genuine ZF 4657.183.337 loose parts kit is engineered for the WG 210 series transmission. It is also compatible with the WG180, WG200, and select WG190 variants that share the same housing architecture. Always verify your transmission model and serial number before ordering. The kit directly interfaces with the TRANSMISSION HOUSING and requires the HOUS.FRONT SECT and HOUSING REAR PART to be in good condition for proper installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4657201168 | HOUSING REAR PART | Rear housing section for output shaft support |
| 4657298101 | HOUSING REAR SECTION | Additional rear housing segment for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing sections |
| 0636100801 | CAP SCREW | Fastener for front housing attachment |
| 4656301148 | FIXING PLATE | Retaining plate for internal components |
| 4657301032 | SCREEN SHEET | Filter screen for oil sump |
| 4657301033 | SCREEN SHEET | Secondary filter screen for hydraulic circuit |
| 0636100803 | CAP SCREW | Fastener for rear housing attachment |
Frequently Asked Questions
Q: Can I reuse the old loose parts from my WG210 when replacing the housing?
A: No. ZF recommends always replacing the 4657.183.337 loose parts kit whenever the TRANSMISSION HOUSING or any section is removed. The seals and retainers are single-use to guarantee leak-free operation.
Q: Does this kit include the cap screws for the front and rear housing?
A: The kit contains the loose parts and seals, but the specific CAP SCREW (0636100801) and CAP SCREW (0636100803) are ordered separately to allow for correct thread length selection.
Q: How do I know if my transmission uses the WG210 series?
A: Check the transmission data plate. The WG210 is commonly found in medium-duty trucks and buses. If your model is WG180, WG190, or WG200, this kit is also compatible with the same housing interface.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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