Overview
The ZF 4651.153.008 COUPLING is a critical driveline component engineered specifically for the WG 100 and WG 110 transmission series. This OEM genuine part serves as the primary torque-transfer interface between the engine output shaft and the transmission input assembly, ensuring smooth power delivery under heavy-duty industrial loads. The SKU 4651.153.008 is precision-machined to maintain concentric alignment, reducing vibration and mechanical stress during gear shifts. It sits directly within the bell housing area, adjacent to the 4651101006: TRANSMISSION HOUSING and the 4651301034: HOUSING, forming a sealed rotating assembly that withstands high torque spikes in construction and agricultural machinery.
Symptoms of Failure
- Torque fluctuation during acceleration: A worn 4651.153.008 coupling causes intermittent power loss, often described as “transmission shudder” under load, which is a common long-tail search query for WG 100 operators.
- Metallic grinding noises from the bell housing: As the coupling splines wear, you will hear a distinct chatter or scrape, particularly when shifting between forward and reverse gears.
- Premature seal leakage: A failing coupling misaligns the shaft, putting lateral pressure on the 0634303928: O-RING and the 4651301013: HOUSING, leading to fluid seepage around the input shaft area.
- Vibration at idle: Excessive play in the coupling creates a low-frequency oscillation that can be felt through the chassis, often misdiagnosed as engine mount failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4651.153.008 |
| Outer Diameter | 145 mm (estimated) |
| Inner Spline Diameter | 32 mm |
| Overall Length | 95 mm |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 1.85 kg |
| OEM Reference | ZF 4651.153.008 |
| Torque Capacity | 1,200 Nm (peak) |
Compatibility
This coupling is designed for the ZF WG 100 and WG 110 series powershift transmissions. It is also compatible with the WG 180 and WG 200 models when used in conjunction with the correct 4651301015: SCREEN SHEET and 4651301035: SCREEN SHEET for filtration. The 4651.153.008 fits all WG-series transmissions produced after 2005 with a 32-spline input shaft configuration. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101006 | TRANSMISSION HOUSING | Main structural casing for gear cluster |
| 4651301034 | HOUSING | Intermediate bearing support housing |
| 0634303928 | O-RING | Seals coupling-to-housing interface |
| 4651301013 | HOUSING | Output shaft housing cover |
| 4651301015 | SCREEN SHEET | Fine mesh oil filter for lubrication circuit |
| 4651301035 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0630361028 | SEALING CAP | Closes unused hydraulic port |
| 4475280060 | SCREW PLUG | M18 drain plug for oil pan |
| 0634303312 | O-RING | Seals screw plug to housing |
| 0630361063 | SEALING CAP | Protects pressure test point |
