Bosch Long Haul 12-volt starter

Bosch has announced the availability of its Long Haul 12-volt series of starters that are specially designed to outperform and outlast their OE counterparts on most heavy-duty commercial vehicles, the company says. Said to be built on the most current technology available in commercial-vehicle starting systems, these starters include all the features necessary for the widest range of large-displacement diesel engine applications. They also utilize the fewest number of SKUs – three Bosch Long Haul starters replace more than 186 competitive part numbers.

High-compression diesel engines require greater amounts of torque and power to turn over in all temperature ranges, Bosch says, adding that these starters use a shock-absorbing planetary gear system originally designed in-house. Mounted on rubber shock absorbers and located in a steel drive-end housing, the planetary gear carrier is said to resist ‘kick back’ and eliminate drive-end breakage common in many competitive designs.

Other notable features include the easy-to-use universal mounting flange that reduces SKU count which, in turn, simplifies inventory. Over-crank protection is said to prevent damage and ensure a longer life, while an internal magnetic switch (IMS) ensures optimal voltage for starting in all weather conditions.

The fixed over-running clutch with 50% less moving mass protects internal components in case of ‘blind start’ or ‘click, no crank’ situations. There’s a meshing spring for positive gear engagement during cranking, which eliminates ‘click, no crank’ and prevents costly damage to the engine ring gear.

An isolated external ground circuit promotes optimal grounding and maximum starting power, says Bosch, and the open-nose design resists moisture, dust and dirt, preventing damage to internal electrical and mechanical components

Finally, a protective cover shields the solenoid and critical electrical connections, ensuring positive connections and maximum starting power.