Overview
The ZF 4656.183.169 LOOSE PARTS for WG171 is a critical service kit designed to restore the internal integrity of your ZF WG 171 transmission. This OEM genuine part, identified by SKU 4656.183.169, contains the essential fasteners, seals, and small hardware required to secure the main housing assembly and internal fluid circuits. It is installed directly within the transmission casing, acting as the binding hardware that keeps the TRANSMISSION HOUSING and the HOUS.FRONT SECT mated under precise torque specifications. Without this specific loose parts set, the transmission cannot maintain its structural rigidity or proper oil pressure.
Symptoms of Failure
When the 4656.183.169 LOOSE PARTS kit degrades or is missing components, operators will notice distinct operational failures. Look for these specific warning signs:
- External oil seepage at housing seams: Worn or missing fasteners from this kit cause the TUBE connections to loosen, leading to visible ATF leaks around the bell housing.
- Intermittent gear slippage under load: A loose front section due to degraded hardware from this kit allows the clutch packs to lose clamping force, resulting in hesitation during upshifts.
- Vibration during torque converter lockup: If the SCREEN SHEET is not properly retained by these loose parts, debris bypass can cause hydraulic flutter.
- Increased operating temperature: A compromised seal from this kit allows fluid bypass, reducing lubrication efficiency and causing the transmission to run hotter than normal.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4656.183.169 |
| Material Composition | Steel (fasteners) / Nitrile (seals) |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Kit Contents | Bolts, washers, O-rings, retaining clips |
| Torque Specification | 25 Nm (18.4 ft-lb) for M8 fasteners |
| OEM Reference | ZF WG 171 Service Kit |
Compatibility
This genuine ZF 4656.183.169 LOOSE PARTS kit is engineered specifically for the WG 171 Series transmission. It is also compatible with the WG 180 and WG 200 series when used in conjunction with the HOUSING REAR PART. For proper installation, always pair this kit with a new O-RING (0634313514) and CAP SCREW (0636100803) to ensure zero leaks. The kit also works with the CYLINDRICAL PIN (0631306816) for precise alignment of the housing sections.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656301066 | HOUS.FRONT SECT | Front section housing for torque converter |
| 4656201015 | SCREEN SHEET | Fluid filtration mesh inside sump |
| 4656301037 | TUBE | Oil transfer tube between sections |
| 0634313514 | O-RING | Seals fluid passages |
| 0636100803 | CAP SCREW | Fastens housing sections |
| 4656301042 | HOUSING REAR PART | Rear casing for output shaft |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing |
| 0636100801 | CAP SCREW | Secures valve body assembly |
| 0636100160 | CAP SCREW | Fastens oil pan to housing |
Frequently Asked Questions
Q: Can I reuse the old fasteners from my ZF WG171 instead of buying the 4656.183.169 kit?
A: No. ZF specifies that all fasteners in this loose parts kit are single-use due to torque-to-yield requirements. Reusing them risks fastener fatigue and sudden oil loss.
Q: Does this kit include the O-ring for the tube connection?
A: Yes, the 4656.183.169 LOOSE PARTS kit contains the necessary O-rings for the TUBE interface. However, we recommend also ordering the separate O-RING (0634313514) as a backup for critical applications.
Q: How do I verify this kit fits my WG180 transmission?
A: Check the rear housing part number. If your unit uses the HOUSING REAR PART (4656301042), this kit is fully compatible. Always cross-reference your serial number with the ZF parts catalog.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
