High-Torque Electric Starters
HEXASTART high-torque electric starters are designed to deliver instant, powerful cranking, bringing diesel engines up to reliable starting speed. They suit large diesel engines in marine propulsion, generator sets, and heavy industrial power systems, and custom development is available for specific engine models.
Models

QD21129
To meet the high starting resistance of large-displacement, high-horsepower engines, we developed the QD21129, an 11 kW high-output electric starter. It is designed for large engines such as the Mitsubishi S16R series engines, and a single QD21129 can replace a conventional dual-starter setup.
Key Features
Single-Starter Solution
On large engines, a single QD21129 can replace a traditional parallel dual-starter setup, simplifying the starting system.
High Cranking Output
Rated at 11 kW and designed for the heavy starting loads of large-displacement engines.
Custom Engineering
Starters can be developed to match specific engine models, mounting geometries, and operating requirements.
Factory Tested
Every starter is tested before shipment by our in-house team, with dimensional checks and bench testing.
Technical Specifications
| QD21129 | |
|---|---|
| Rated Power | 11 kW |
| Rated Voltage | 24 V |
| Cranking Torque | ≥ 110N·m |
| Rotation | Clockwise |
| Weight | 18.6 kg |
Technical Specifications
| Engine | Starter Configuration |
|---|---|
| Mitsubishi S16R series and related high-horsepower engines | Single QD21129 |
| Shanghai Mitsubishi heavy-duty diesel engine series | Single QD21129 |
| Other heavy-duty, large-displacement diesel engines | Custom fitment available on request |
Confirming Fitment
To confirm fitment, please send us:
Engine model and rating
Flywheel housing type and flywheel ring gear specifications (number of teeth, module)
System voltage
Model or photo of the current starter, if available



