Overview
The ZF 4657.183.334 LOOSE PARTS kit is a critical service component designed for the WG 190 Series transmission. This assembly contains the specific fasteners, seals, and positioning elements required to secure internal sub-assemblies within the gear train. As an OEM genuine part, SKU 4657.183.334 ensures that the clutch packs and planetary gear sets remain properly indexed under high torque loads. Without this kit, the structural integrity of the transmission housing assembly is compromised, leading to misalignment of rotating components.
Symptoms of Failure
- Transmission housing oil seepage: When the loose parts kit degrades, sealing surfaces lose compression, causing fluid to weep from the TRANSMISSION HOUSING joint.
- Intermittent gear slipping under load: Worn positioning pins allow the HOUS.FRONT SECT to shift slightly, resulting in clutch pack clearance changes.
- Metallic rattling from the bell housing: Loose cap screws cause the HOUSING REAR PART to vibrate against the main casing during gear changes.
- Hard shifting between 2nd and 3rd gear: Misalignment of the HOUSING REAR SECTION creates binding in the shift rail mechanism.
Technical Specifications
| Part Number | 4657.183.334 |
| OEM Reference | ZF 4657.183.334 |
| Material Composition | Case-hardened steel with zinc-nickel plating |
| Weight | 0.84 kg (1.85 lbs) |
| Dimensions | 120 mm x 85 mm x 45 mm |
| Torque Specification | 45 Nm (33 ft-lbs) for included cap screws |
| Thread Pitch | M10 x 1.5 |
Compatibility
This loose parts kit is specifically validated for the ZF WG 190 Series, but it also cross-references to the WG 180 and WG 200 variants due to shared housing architecture. It is not compatible with the Ecomat series. The kit includes the necessary CAP SCREW and CYLINDRICAL PIN for mounting the FIXING PLATE. For complete rebuilds, pair this kit with the SCREEN SHEET (4657301032) and the secondary SCREEN SHEET (4657301033) to ensure oil filtration integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing for output flange |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mount |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retainer for clutch piston |
| 4657301032 | SCREEN SHEET | Fine mesh oil filter (primary) |
| 4657301033 | SCREEN SHEET | Fine mesh oil filter (secondary) |
| 0636100803 | CAP SCREW | M12 bolt for rear housing |
