Overview
The ZF 4657.183.406 LOOSE PARTS kit is a critical service component designed specifically for the WG 210 series transmission. This genuine OEM assembly includes the necessary fasteners, seals, and positioning elements required to secure and align the main housing sections during rebuild or repair. The SKU 4657.183.406 functions as the primary retention set for the transmission’s central casing, ensuring that the TRANSMISSION HOUSING remains properly torqued against the HOUS.FRONT SECT and the HOUSING REAR PART. Without this loose parts set, the structural integrity of the gear train assembly is compromised.
Symptoms of Failure
- External oil seepage at housing joints: When the 4657.183.406 fasteners lose preload, transmission fluid escapes between the HOUSING REAR SECTION and the main body, leaving visible drips on the bell housing.
- Intermittent gear slippage under load: A loose housing allows the shaft centers to shift minutely, causing the clutch packs to lose engagement pressure during torque conversion.
- Abnormal vibration at highway speeds: Missing or fatigued components from this kit permit the rear housing section to resonate, transmitting harsh harmonics through the driveline.
- Difficulty shifting between forward gears: Misalignment from degraded loose parts prevents the valve body from seating correctly, resulting in delayed or harsh shifts.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.183.406 |
| OEM Reference | ZF WG210 Loose Parts Kit |
| Material Composition | Steel alloy with zinc-nickel plating |
| Weight (estimated) | 0.85 kg (1.87 lbs) |
| Fastener Torque Spec | 85 Nm (62.7 ft-lbs) |
| Thread Pitch | M10 x 1.5 (primary bolts) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 4657.183.406 loose parts set is engineered for the WG 210 transmission family. It is also compatible with the WG 180, WG 200, and WG 211 series when used in conjunction with the correct FIXING PLATE. The kit is not interchangeable with the older WG 160 series due to differing bolt patterns. Always verify the housing casting numbers before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201166 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4657201170 | HOUSING REAR PART | Rear section supporting output shaft |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retention bracket for oil pan |
| 4657301032 | SCREEN SHEET | Fine mesh filter for valve body |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for sump |
| 0636100803 | CAP SCREW | M8 bolt for accessory mounting |
