Overview
The ZF 4656.183.349 LOOSE PARTS for WG171 is a critical service kit designed to restore the internal integrity of your ZF WG171 transmission. This OEM genuine part, identified by SKU 4656.183.349, contains the essential loose components that secure and seal the main housing assembly. It sits directly within the transmission’s structural core, working in tandem with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain precise alignment and oil containment. Without this kit, the transmission cannot achieve proper clamping force or fluid sealing.
Symptoms of Failure
When the ZF 4656.183.349 LOOSE PARTS begin to degrade, operators will notice distinct operational issues. External oil seepage around the housing mating surfaces is the most common early indicator, often mistaken for a gasket failure. A second symptom is intermittent gear slippage under heavy load, caused by insufficient clamping pressure on the internal clutch packs. Third, you may hear metallic rattling from the bell housing area as loose fasteners allow the SCREEN SHEET to vibrate against the case. Finally, erratic shift timing can occur when the TUBE becomes misaligned, disrupting hydraulic flow to the valve body.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4656.183.349 |
| OEM Reference | ZF WG171 Loose Parts Kit |
| Material Composition | Hardened Steel / Nitrile Rubber |
| Estimated Weight | 0.85 kg (1.87 lbs) |
| Package Dimensions | 180 x 120 x 60 mm |
| Fastener Grade | 10.9 (Metric) |
| Seal Type | Static O-Ring / Bonded Seal |
Compatibility
This genuine ZF 4656.183.349 LOOSE PARTS kit is specifically engineered for the WG 171 Series transmission family. While its primary application is the WG171, the same internal geometry allows it to function in the WG180 and WG200 models when used with the correct O-RING and CAP SCREW variants. It is not backward compatible with the WG150 series due to differing bolt patterns on the HOUSING REAR PART. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural case for gear train |
| 4656301066 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4656201015 | SCREEN SHEET | Filter mesh for hydraulic fluid |
| 4656301037 | TUBE | Hydraulic fluid passage conduit |
| 0634313514 | O-RING | Static seal for housing joints |
| 0636100803 | CAP SCREW | M10 fastener for housing |
| 4656301042 | HOUSING REAR PART | Rear section housing for output shaft |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing |
| 0636100801 | CAP SCREW | M8 fastener for cover plate |
| 0636100160 | CAP SCREW | M6 fastener for valve body |
Frequently Asked Questions
Q: Can I reuse the old fasteners from my ZF WG171 when installing this kit?
A: No. The ZF 4656.183.349 LOOSE PARTS kit includes new torque-to-yield bolts. Reusing old hardware can lead to improper clamping force and eventual oil leakage around the HOUS.FRONT SECT.
Q: Does this kit include the O-rings for the hydraulic tube?
A: Yes. The kit contains the necessary seals for the TUBE connections. However, the large O-RING for the main housing is a separate component (0634313514) and should be ordered alongside this kit.
Q: How do I know if my transmission needs the WG171 or WG180 version of this kit?
A: Check the casting number on the TRANSMISSION HOUSING. If it ends in “171”, this kit is correct. For WG180 housings, you will need the corresponding loose parts kit for that series.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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