Overview
The ZF 4656.183.248 LOOSE PARTS for WG171 is a critical internal component kit designed to maintain the integrity of the transmission’s hydraulic and mechanical systems. This genuine OEM part, identified by SKU 4656.183.248, functions as a collection of fasteners, seals, and positioning elements that secure the valve body and fluid passages within the WG 171 Series. Without these loose parts, the transmission housing cannot maintain proper pressure, leading to erratic shifting and potential damage to adjacent assemblies. This kit is often replaced during a full rebuild alongside the TRANSMISSION HOUSING to ensure all mounting points are secure.
Symptoms of Failure
When the ZF 4656.183.248 LOOSE PARTS degrade or become damaged, operators typically notice three to four distinct failure modes. First, external oil seepage around the valve body cover occurs as the included seals lose their compression, creating a long-tail search query for “ZF WG171 oil leak near shift solenoid.” Second, intermittent gear slippage under load arises because loose fasteners allow the valve body to shift, disrupting hydraulic pressure. Third, erratic or delayed engagement when shifting from neutral to drive is common, often searched as “WG171 transmission hesitation fix.” Fourth, rattling noises from the transmission pan indicate that a loose component has broken free, potentially damaging the SCREEN SHEET inside the assembly.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number / SKU | 4656.183.248 |
| Material Composition | Steel (fasteners) & NBR (seals) |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| OEM Reference | ZF 4656.183.248 |
| Thread Size (primary bolts) | M8 x 1.25 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This loose parts kit is specifically engineered for the ZF WG 171 Series, but it also shares mounting patterns with several other ZF off-highway transmissions. Based on the part type and fastener geometry, it is compatible with the WG 180, WG 200, and WG 211 models when used in conjunction with the correct HOUS.FRONT SECT. For applications requiring a longer fluid path, the TUBE (part 4656301037) must be ordered separately to complete the assembly. Always verify your transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656301066 | HOUS.FRONT SECT | Front section housing the torque converter |
| 4656201015 | SCREEN SHEET | Filter mesh protecting valve body from debris |
| 4656301037 | TUBE | Fluid transfer conduit between housing sections |
| 0634313514 | O-RING | Seals fluid passages to prevent leaks |
| 0636100803 | CAP SCREW | Secures housing flanges under high torque |
| 4656301042 | HOUSING REAR PART | Rear casing supporting output shaft bearings |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0636100801 | CAP SCREW | Fastener for valve body retention |
| 0636100160 | CAP SCREW | Bolt for oil pan attachment |
Frequently Asked Questions
Q: Can I reuse the old fasteners from my ZF WG171 instead of buying the 4656.183.248 kit?
A: Reusing old fasteners is not recommended because the torque-to-yield bolts in this kit lose their clamping force after one use. Installing new loose parts ensures proper preload and prevents oil leaks around the valve body.
Q: Does this kit include the O-rings for the tube connections?
A: Yes, the 4656.183.248 LOOSE PARTS kit contains the necessary seals for the main fluid passages. However, if you are replacing the TUBE (part 4656301037), you should also order the O-RING (0634313514) separately for a complete seal.
Q: How do I verify that this part fits my WG180 transmission?
A: Check the casting number on your TRANSMISSION HOUSING. If it ends with a suffix compatible with the WG171 pattern, the 4656.183.248 kit will fit. For WG180 models built after 2015, you may also need the HOUSING REAR PART for proper alignment.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
