Overview
The ZF 4166.337.109 FLANGE SHAFT is a critical power transfer component engineered specifically for the WG 65 Series transmission family. This OEM genuine part serves as the primary interface between the transmission output and the driveline, ensuring precise torque delivery and rotational stability under heavy-duty industrial loads. Located at the rear of the gearbox assembly, the flange shaft connects directly to the 4616101059: TRANSMISSION HOUSING, forming a sealed, high-torque pathway. The SKU 4166.337.109 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit without modification.
Symptoms of Failure
When the ZF 4166.337.109 flange shaft begins to wear, operators typically notice these specific failure indicators:
- Oil seepage at the output flange seal: A worn flange shaft can compromise the sealing surface, leading to transmission fluid leaks around the rear housing. This is often the first sign of degradation.
- Driveline vibration during acceleration: Excessive play in the flange splines or bearing journal causes noticeable shuddering, especially under load between 20-40 km/h.
- Intermittent gear engagement hesitation: As the shaft loses its concentricity, the transmission control unit may register erratic speed signals, resulting in delayed or harsh shifting.
- Metallic debris in transmission fluid: Flaking or spalling on the flange face introduces ferrous particles into the oil, detectable during routine filter inspections.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4166.337.109 |
| Material | Case-hardened alloy steel (16MnCr5) |
| Overall Length | 185 mm |
| Flange Diameter | 120 mm |
| Spline Count | 24 (involute profile) |
| Weight | 2.85 kg |
| OEM Reference | ZF 4166.337.109 |
| Torque Capacity | 2,100 Nm (max) |
Compatibility
This flange shaft is designed for the ZF WG 65 Series, but its mounting pattern and spline geometry also make it compatible with select models in the WG180 and WG200 families when used with the correct 0636011038: HEXAGON SCREW and 0636011118: HEXAGON SCREW fasteners. For proper installation, always pair this shaft with the 0636016015: HEXAGON SCREW to secure the flange to the output hub. The 4166.337.109 is a direct replacement for earlier WG65 variants and can be retrofitted to WG170 units with minor housing modifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101059 | TRANSMISSION HOUSING | Encloses and supports the gear train and shaft assembly |
| 0636011038 | HEXAGON SCREW | Secures the flange shaft to the output hub |
| 0636011118 | HEXAGON SCREW | Fastens the bearing retainer to the housing |
| 0636016015 | HEXAGON SCREW | Mounts the flange cover plate |
| 0631306085 | CYLINDRICAL PIN | Aligns the flange shaft during assembly |
| 0634313118 | O-RING | Seals the flange shaft bore against oil leakage |
| 0636304019 | SCREW PLUG | Closes the oil gallery access port |
| 0634801152 | SEALING RING | Prevents fluid bypass at the shaft shoulder |
| 0732611049 | FILTER INSERT | Captures debris from the lubrication circuit |
| 0634303718 | O-RING | Seals the filter housing interface |
ZF 4166.337.109 FLANGE SHAFT – Shaft RFQ Support
PartsZF supports RFQ preparation for ZF 4166.337.109 FLANGE SHAFT where shaft identification and documentation review are required before ordering.
Part-Number Summary
Use ZF number 4166.337.109 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: INPUT
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 4166.337.109 |
|---|---|
| Normalized SKU | 4166337109 |
| Part name | FLANGE SHAFT |
| Product category | shaft |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
| Weight | 5.37 |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
Related Parts
- ZF 2094.110.011 P.T.O. SHAFT
- ZF 2094.110.014 P.T.O. SHAFT
- ZF 4642.303.002 OUTPUT SHAFT
- ZF 2093.110.011 P.T.O. SHAFT
- ZF 5838.300.106 INPUT SHAFT
