Overview
The ZF 4657.183.340 LOOSE PARTS for WG211 is a critical OEM genuine component designed to maintain the structural integrity and operational precision of your ZF WG211 transmission. This loose parts kit contains essential fasteners, seals, and alignment elements that secure internal assemblies within the gearbox housing. Specifically, it interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to ensure proper torque distribution and vibration dampening. The SKU 4657.183.340 is factory-matched to WG211 series units, guaranteeing exact fitment without modification.
Symptoms of Failure
- Transmission oil seepage at housing joints: Worn or missing loose parts can cause the HOUSING REAR PART to lose its seal, leading to visible fluid drips under the vehicle during operation.
- Intermittent gear engagement hesitation: When these fasteners degrade, the CYLINDRICAL PIN alignment shifts, causing delayed or rough shifts between forward and reverse gears.
- Abnormal housing vibration at highway speeds: Loose retention elements allow micro-movement between the transmission housing sections, producing a low-frequency hum or shudder under load.
- Increased metallic debris in transmission fluid: Failing loose parts can fracture, introducing steel particles into the oil pan that accelerate wear on planetary gearsets.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.183.340 |
| Material Composition | Case-hardened steel (DIN 1.7131) with zinc-nickel plating |
| Overall Dimensions | 120 mm x 85 mm x 45 mm (kit assembly) |
| Weight | 0.62 kg (1.37 lbs) |
| Thread Pitch | M10 x 1.5 (primary fasteners) |
| Torque Specification | 45 Nm ± 3 Nm (dry installation) |
| OEM Reference | ZF Friedrichshafen AG |
Compatibility
This loose parts kit is engineered primarily for the ZF WG211 series, but it also cross-fits select models in the WG180, WG200, and WG250 families due to shared housing architecture. It is fully compatible with transmissions that utilize the TRANSMISSION HOUSING and HOUS.FRONT SECT configurations. Always verify your transmission serial number against the WG211 service manual to confirm fitment before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657301130 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657301131 | HOUSING REAR PART | Rear section housing for output shaft |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636102489 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retention plate for bearing preload |
| 0636102463 | CAP SCREW | M8 bolt for auxiliary bracket |
| 4657201133 | SCREEN SHEET | Oil filter mesh for debris capture |
| 0636115287 | CAP SCREW | M12 bolt for torque converter housing |
| 4657301065 | PLATE | Spacer plate for clutch pack clearance |
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