Calculate Major Fuel Economy Savings From Delco Remy Alternators – UnderhoodService

Calculate Major Fuel Economy Savings From Delco Remy Alternators

Remy International, Inc. has launched an online fuel economy calculator to help customers better understand the positive impact the Delco Remy high-efficiency alternators have on fuel consumption.

Remy International, Inc., manufacturer of Delco Remy heavy duty starters and alternators, as well as Remy light duty starters and alternators, has launched an online fuel economy calculator at to help customers better understand the positive impact the Delco Remy high-efficiency alternators have on fuel consumption.

Calculations show that a typical long haul fleet equipped with Delco Remy high-efficiency alternators with brushless durability, like the 36SI or 40SI,  can save as much as 28% in fuel costs compared to a standard brush-style competitive model.  

“Power is not free,” says Mike Bradfield, senior staff engineer. “The fuel usage related to alternators is meaningful and savings can be significant, particularly the more trucks you own or operate.”

Bradfield’s research — outlined in the Improving Alternator Efficiency Measurably Reduces Fuel white paper — was used to develop an online, hands-on calculator that measures potential fuel savings for truck/fleet owners and operators.  the white paper can also be accessed at

Users input basic information such as duty cycle, yearly miles, years of ownership, number of trucks in the fleet, and the price of fuel. With that data, the calculator estimates:

• Maximum efficiency on regular vs. high-efficiency models

• Yearly fuel costs

• Fuel costs over life of vehicle ownership

• Fuel costs for entire fleet over life of ownership

• Potential savings gained from high-efficiency models

“The more efficient the alternator, the less engine horsepower is required — and that translates into a fuel savings of hundreds of dollars per truck, per year,” Bradfield says. “Our goal is to give customers a tool that allows them to quantify savings and analyze the cost-benefit ratio for their particular situation.”

The impact of an alternator is not something that can be overlooked, particularly with fuel costs showing a continued upward trend. “Delco Remy high-efficiency alternators are a tangible way to positively impact a fleet’s bottom line,” states Bradfield.

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