HYDRAULIC
H-4
H-4 Hydraulic Marine Gearbox
The most compact and lightest model in the range, the H-4 weighs just 40 kg and fits easily into tight engine rooms. Continuous operation up to 4,500 rpm makes it suitable for high-revving engines. It supports twin-engine installations and remote control.
⚓ APPLICATIONSSpeedboats · Light pleasure craft
Specifications
- Maximum Continuous Speed
- 4,500 rpm
- Dry Weight
- 40 kg (88 lbs)
- Oil Capacity & Type
- 1.5 L ATF
- Reduction Ratios
- 1.0:1 · 1.5:1 · 2.0:1 · 2.5:1
- SAE Bellhousing Options
- SAE 2 · SAE 3 · SAE 4 · SAE 5
- Engine Rotation
- Clockwise and counter-clockwise
- Twin-Engine Compatibility
- Yes
- Remote Control
- Yes
Performance Data
| Ratio | Pleasure | Heavy Duty | ||
|---|---|---|---|---|
| kW | Maximum torque (Nm) | kW | Maximum torque (Nm) | |
| 1.5:1 | 1.88 | 179 | 1.81 | 172 |
| 2.0:1 | 1.72 | 165 | 1.62 | 155 |
| 2.5:1 | 1.56 | 149 | 1.50 | 143 |
The performance table shows only the reduction ratios for which data is available. Power ratings are stated in kW per 100 rpm. Specifications are subject to change without notice.




