Overview
The ZF 4656.183.346 LOOSE PARTS set is a critical service kit designed specifically for the WG 160 series transmission. This assembly contains the necessary internal components—including seals, retaining rings, and small hardware—that secure and position the main shaft and gear clusters within the transmission housing. As an OEM genuine part, SKU 4656.183.346 ensures precise fitment and long-term durability, directly supporting the structural integrity of the gear train. When rebuilding or overhauling a WG 160 unit, this loose parts kit is often replaced in conjunction with the TRANSMISSION HOUSING to guarantee that all internal clearances remain within factory specifications.
Symptoms of Failure
- Oil leaks from the transmission case seam: Worn or degraded loose parts can cause seal failure, leading to visible fluid seepage around the housing joints.
- Gear slipping under load: If the retaining components lose tension, the main shaft may shift slightly, resulting in intermittent power loss during acceleration.
- Unusual rattling or knocking noises from the bell housing: Loose hardware inside the assembly can create metallic sounds, especially when shifting between forward and reverse gears.
- Difficulty engaging gears: Misalignment caused by worn loose parts often makes gear engagement feel rough or requires extra force on the shift lever.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4656.183.346 |
| OEM Reference | ZF WG 160 Series |
| Material | Steel alloy with zinc-plated hardware |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 80 mm x 40 mm |
| Compatible Housing | HOUS.FRONT SECT and HOUSING REAR PART |
Compatibility
This loose parts kit is engineered for the ZF WG 160 transmission family, including models WG 160, WG 180, and WG 200. It is also used in select WG 150 variants where the internal shaft configuration matches. The kit interfaces directly with the HOUSING REAR SECTION and is a mandatory replacement when servicing the main bearing support area. For heavy-duty applications, always verify the housing casting number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101055 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4656201075 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4656201076 | HOUSING REAR PART | Rear housing component for output shaft support |
| 4656298047 | HOUSING REAR SECTION | Complete rear section with bearing bore |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 4656301148 | FIXING PLATE | Secures internal components to the housing |
| 0636100817 | CAP SCREW | Fastener for housing attachment points |
| 4656301016 | SCREEN SHEET | Filter screen for oil return passage |
| 4656301017 | SCREEN SHEET | Secondary filter screen for hydraulic circuit |
| 0636100803 | CAP SCREW | M10 cap screw for rear housing flange |
Frequently Asked Questions
Q: Can I reuse the old loose parts if they look intact?
A: It is strongly discouraged. The ZF 4656.183.346 kit includes pre-stressed retaining rings and seals that lose elasticity over time. Reusing old parts risks sudden failure and internal damage to the TRANSMISSION HOUSING.
Q: Does this kit include the cap screws for the rear housing?
A: No. The 4656.183.346 kit contains only the loose hardware (pins, clips, and small seals). For cap screws, you need separate parts such as 0636100817 or 0636100803.
Q: How do I know if my WG 160 needs this kit?
A: If you are replacing the HOUS.FRONT SECT or HOUSING REAR PART, this loose parts kit is required to properly seat the new components. Always inspect the old parts for deformation or corrosion.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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