Fire trucks are tasked with powering complex electrical systems at engine idle and require an alternator that is capable of meeting demanding voltage requirements under extreme conditions. Optimized for fire truck applications, the IdlePro Extreme 12V, 420-amp heavy-duty alternator from Leece-Neville Heavy Duty Systems is engineered to deliver output at low-engine speeds to keep vehicles running longer.

The high-performance brushless design helps reduce weight and size and Isolated Ground Technology reduces stray voltage and electrical noise, helping to protect the engine. Its Auxiliary Draft Cooling design allows for cooler running temperatures and the heavy-duty eCoat helps protect against corrosion. In addition, dual cable terminals provide extended coverage and convenience.

The alternator features an array of advanced technologies designed to improve battery life, increase reliability, and minimize downtime in vehicles that power a high number of electrical draws at low-engine speeds. A built-in Remove Sense feature reduces battery charge time and returns the battery to a full charge between vehicle stops and Isolated Ground Technology reduces stray voltage and electrical noise, helping to protect the engine.

IdlePro Extreme alternators operate at 76% efficiency and offer a minimum of 90% of their rated maximum output at engine idle speed. It is covered by a three-year, 350,000-mile warranty.