Overview
The ZF 4657.183.377 LOOSE PARTS for WG190 is a critical OEM genuine component designed for the WG 190 series transmission. This assembly kit contains the essential loose hardware and fasteners required to secure internal transmission elements, ensuring proper alignment and torque retention during operation. As an OEM genuine part, SKU 4657.183.377 guarantees exact fitment and material compatibility with ZF’s engineering specifications. It sits within the main transmission housing assembly, interfacing directly with the 4657101082: TRANSMISSION HOUSING to maintain structural integrity under high-load conditions.
Symptoms of Failure
- Transmission oil seepage at housing joints: When the loose parts kit components degrade, you may notice oil weeping from the interface between the 4657201166: HOUS.FRONT SECT and the main casing, indicating compromised sealing.
- Abnormal gear engagement noise: Worn fasteners or missing hardware from the 4657.183.377 kit can cause micro-movement in the 4657201170: HOUSING REAR PART, leading to audible clunking during shifts.
- Vibration during torque conversion: Loose parts within the assembly allow the 4657298102: HOUSING REAR SECTION to shift, creating persistent low-frequency vibration under load.
- Intermittent gear slipping: Failure to secure internal components with this kit can result in misalignment of clutch packs, causing unpredictable power loss during acceleration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.183.377 |
| Material Composition | Hardened steel with zinc-nickel plating |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4657.183.377 |
| Fastener Torque Spec | 45 Nm ± 5 Nm |
| Operating Temperature Range | -40°C to +120°C |
| Compatible Housing Types | WG190, WG180, WG200 series |
Compatibility
This OEM genuine loose parts kit is engineered for the ZF WG 190 transmission series. It is also compatible with the WG 180 and WG 200 models when used in conjunction with the correct 4657101082: TRANSMISSION HOUSING. The 4657.183.377 kit is specifically validated for use with the 4657201166: HOUS.FRONT SECT and 4657201170: HOUSING REAR PART assemblies. For applications requiring the 4657298102: HOUSING REAR SECTION, verify that your transmission serial number falls within the WG190 revision range to ensure proper fastener alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Forward housing section for pump interface |
| 4657201170 | HOUSING REAR PART | Rear housing section for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M10 fastener for housing-to-bell housing |
| 4656301148 | FIXING PLATE | Retention plate for bearing preload |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for suction line |
| 0636100803 | CAP SCREW | M12 fastener for rear housing attachment |
