Overview
The ZF 4657.183.380 LOOSE PARTS set is a critical service kit designed specifically for the WG 190 series transmission. This assembly contains the necessary loose components—including seals, retaining rings, and small hardware—required to secure and seal the internal clutch packs and rotating assemblies within the transmission housing. As an OEM genuine part, SKU 4657.183.380 ensures factory-specified tolerances and material integrity, preventing premature wear and fluid contamination. This kit is typically installed during a major overhaul or when replacing the TRANSMISSION HOUSING to guarantee a leak-free, vibration-resistant fit.
Symptoms of Failure
When the 4657.183.380 LOOSE PARTS begin to degrade, operators often notice transmission fluid seepage around the housing joints, particularly after extended highway operation. A second common failure symptom is intermittent gear slippage during upshifts, caused by loose retaining hardware allowing clutch pack movement. Technicians also report abnormal metallic rattling from the bell housing area when the internal fasteners lose torque. Finally, difficulty engaging reverse gear under load frequently points to worn loose parts within the WG190’s rear section.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.183.380 |
| OEM Reference | ZF WG190 Series |
| Material Composition | Steel alloy with nitrile seals |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 80 mm x 40 mm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF loose parts kit is engineered for the WG 190 transmission family, but it also cross-fits select models in the WG180 and WG200 series due to shared housing architecture. It is fully compatible with transmissions using the HOUS.FRONT SECT and the HOUSING REAR PART. For complete rear-end rebuilds, pairing this kit with the HOUSING REAR SECTION ensures proper alignment and sealing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201168 | HOUSING REAR PART | Rear housing cover for output assembly |
| 4657298101 | HOUSING REAR SECTION | Complete rear section with bearing bores |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating |
| 0636100801 | CAP SCREW | Fastener for front housing section |
| 4656301148 | FIXING PLATE | Retains clutch pack in position |
| 4657301032 | SCREEN SHEET | Filter screen for oil sump |
| 4657301033 | SCREEN SHEET | Secondary filter screen for valve body |
| 0636100803 | CAP SCREW | Fastener for rear housing section |
Frequently Asked Questions
Q: Can I reuse the old loose parts from my WG190 when replacing the housing?
A: No. The 4657.183.380 kit contains single-use fasteners and seals that must be replaced to maintain proper torque and sealing. Reusing old hardware often leads to fluid leaks and gear slippage.
Q: Does this kit include the cap screws for the front and rear housing sections?
A: This kit includes general loose hardware, but specific cap screws like 0636100801 and 0636100803 are ordered separately for precise fitment.
Q: How do I verify if my transmission uses the WG190 series?
A: Check the transmission data plate located on the side of the main housing. If the model number begins with “WG190,” this kit is compatible. For WG180 or WG200 variants, confirm housing dimensions match the HOUSING REAR PART specifications.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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