Overview
The ZF 4657.183.372 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 210 series transmission. This genuine OEM part set contains the internal fasteners, seals, and positioning components required to secure the main housing sections during a rebuild or overhaul. Located at the structural junction of the transmission casing, the 4657.183.372 ensures proper alignment and clamping force between the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT. Without this loose parts set, the entire gear train can shift out of tolerance, leading to premature wear. The SKU 4657.183.372 is the factory-specified solution for restoring original bolt tension and structural integrity.
Symptoms of Failure
- Transmission fluid seepage at housing seams: When the loose parts kit degrades, clamping force is lost, allowing ATF to weep between the 4657201170: HOUSING REAR PART and the main case. This is a common long-tail search query for “ZF WG210 oil leak between housing sections.”
- Audible gear rattle or clunking on acceleration: Worn fasteners in the 4657.183.372 set cause micro-movement of the 4657298102: HOUSING REAR SECTION, leading to misaligned shafts and gear clash.
- Intermittent gear slippage under load: Loss of housing rigidity alters bearing preload, resulting in erratic clutch pack engagement. Technicians searching for “WG210 slipping after rebuild” often find the loose parts kit is the root cause.
- Vibration through the driveline at highway speeds: A loose housing assembly creates harmonic imbalance, particularly when the rear section fasteners are compromised.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.183.372 |
| OEM Reference | ZF 4657.183.372 |
| Kit Contents | Bolts, dowels, sealing washers, positioning pins |
| Material | Case-hardened steel (fasteners), nitrile rubber (seals) |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| Thread Pitch | M10 x 1.5 (primary bolts) |
| Torque Specification | 45 Nm + 90° angle (factory spec) |
| Compatible Series | WG 210 |
Compatibility
This genuine OEM loose parts kit is engineered for the ZF WG 210 series transmission family. While the 4657.183.372 is specifically validated for the WG210, it shares fastener geometry with the WG180 and WG200 series due to common housing bolt patterns. However, always verify housing casting numbers before installation. The kit directly interfaces with the 4657101082: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT on WG210 models. For WG180 applications, cross-reference the rear section part numbers to ensure the 4657298102: HOUSING REAR SECTION matches the bolt hole alignment. Do not use this kit on WG120 or WG150 transmissions as the thread pitch differs.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Forward section of the transmission housing |
| 4657201170 | HOUSING REAR PART | Rear housing segment for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Complete rear housing assembly |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M10 fastener for housing-to-bellhousing joint |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil pickup |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M12 fastener for rear housing attachment |
