Overview
The ZF 4657.199.080 LOOSE PARTS kit is a critical service component designed exclusively for the WG 210 series transmission. This OEM genuine assembly contains the essential loose hardware and fasteners required to secure internal sub-assemblies within the gearbox. Specifically, it interfaces with the main casing and the HOUS.FRONT SECT to maintain proper alignment of the planetary gear sets. The SKU 4657.199.080 ensures that every bolt, washer, and spacer meets ZF’s original tolerances, preventing vibration-induced loosening during high-torque operation.
Symptoms of Failure
- Transmission oil seepage at the housing joint: When the loose parts kit degrades, the sealing integrity between the HOUSING REAR PART and the main body is compromised, leading to visible fluid trails.
- Intermittent gear slippage under load: Worn fasteners allow the clutch pack housing to shift minutely, causing delayed engagement and erratic shifting behavior.
- Metallic rattling from the bell housing area: Loose retaining hardware permits the TRANSMISSION HOUSING to vibrate against the front section, producing a distinct knocking sound.
- Hard shifting between forward and reverse: Degraded spacers alter the preload on the valve body, resulting in harsh engagement and increased wear on internal seals.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.199.080 |
| OEM Reference | ZF WG210 Loose Parts Kit |
| Material | Case-hardened steel with zinc-nickel coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (Kit) | 180 mm x 120 mm x 40 mm |
| Fastener Grade | 10.9 (ISO 898-1) |
| Sealing Requirement | Use SURFACE SEALING COMPOUND during installation |
Compatibility
This loose parts kit is engineered for the ZF WG 210 series but shares mounting geometry with the WG180 and WG200 models. It is also compatible with the WG190 and WG220 variants when used in conjunction with the HOUSING REAR SECTION. Always verify the housing casting number before ordering. The kit replaces all loose hardware in the main casing assembly, including the CAP SCREW and CYLINDRICAL PIN sets.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101086 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201176 | HOUS.FRONT SECT | Front section housing for input shaft |
| 0666790033 | SURFACE SEALING COMPOUND | Anaerobic sealant for mating surfaces |
| 4657201179 | HOUSING REAR PART | Rear casing for output shaft support |
| 4657298110 | HOUSING REAR SECTION | Alternate rear housing variant |
| 0636115293 | 螺栓 | High-tensile bolt for housing fastening |
| 0634313603 | O-RING | Hydraulic seal for oil passages |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing registration |
| 0636100801 | CAP SCREW | Flanged fastener for cover plates |
| 4656301148 | FIXING PLATE | Retention plate for bearing preload |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
