To download a PDF of this newsletter, click here.

In This Issue

55SI Alternator: Powerful - and then Some

New Cross-Reference Capabilities

Sales and Support: A Distinct Advantage

Charging System Troubleshooting

Photo Contest

55SI Alternator: Powerful - and then Some

When you need the most power possible, nothing but the Delco Remy 55SI alternator will do. The 55SI, another durable Delco Remy brushless heavy duty alternator, is the highest output machine on the market.

Designed for vehicles with significant electrical loads, the 55SI is available in both 12 and 24 volts and used on a number of applications where maximum alternator performance is required. Its compact size – nearly half the size and weight of the competition – supports all current commercial applications with the alternator engine pad mount design.

But it’s no lightweight, mind you. With the highest amp per pound performance rating in the market, the 55SI is at the top of its class.

“The 55SI is the highest output Delco Remy alternator—not to mention the highest output machine in its class,” says Tim Barnes, Delco Remy Product Manager. “No other alternator can provide this combination of performance, a brushless design and an efficiency rating of over 80% in this frame size.”

The 12-volt model is commonly used by municipalities for utility/work trucks to power inverters and plug-in power tools, lights and other electrical equipment. This 12-volt model also supports the fire and rescue truck market with the output they need and in a package they want. One 55SI can replace a dual alternator system, therefore freeing up space under the hood for other accessories. It’s also ideal for highway trucks equipped with multiple battery auxiliary power units (APU).

The 24-volt model meets the high electrical load demand of  wheel loaders, graders, mining equipment and other off-highway vehicles.

Now and in the future

One of the most attractive features of the 55SI is its future-readiness.

“Highway trucks are becoming more sophisticated each year. Today’s battery APUs and all the additional truck electrical loads are growing—and the 55SI is ready,” explains Barnes. “The 55SI is already there. As the electrical needs of long-haul trucks continue to grow, the 55SI will remain a viable option. It was purposely designed to handle today’s electrical needs as well as what’s to come in the next several years, all with the brushless durability trucking fleets require.”

Main Menu


New Cross-Reference Search Capabilities

Click here to use our newly-updated cross-reference tool.



Key benefits of the enhanced site:

• New filter options and advanced search capabilities

• Catalog with variety of replacement model options, including upgrades

• Special service notes to ensure product installation ease

• Links to product literature, service parts lists and installation instructions







Main Menu


Sales and Support: A Distinct Advantage

When our customers choose Delco Remy products, they get much more than just a powerful starter or alternator. One of our hallmark advantages is the comprehensive service we provide. That's why our team of regional sales and service managers crisscrosses the United States and Canada meeting with aftermarket dealers and distributors. (Click here for enlarged Regional Manager Territories map.)

On average, our team members are on the road more than 200 days a year. Why? Because we still believe there’s no substitute for personal contact. When we visit our aftermarket network, we’re able to ask about your needs and then work to resolve your issues and help you proactively prepare for future projects.

Other ways we support aftermarket customers

• All Makes Program: With our All Makes Program, our new rotatable flange design covers virtually all makes. That means with just a few part numbers, you can provide your heavy duty customers with a solution that’s guaranteed to provide both the output and reliability they need.

• Tech Helpline: When you have a technical question, you want to speak directly to the person who can answer it. Our experienced technicians are available Monday through Friday, from 8 a.m. to 5 p.m., EST at 1-800-372-0222.

• Direct Extended Warranty Reimbursement: Dealers and distributers can contact us directly for reimbursement. We see no value in making our dealers and distributers work back through the original equipment manufacturer to get reimbursed from the supplier. That only costs extra time and money.

Main Menu


Charging System Troubleshooting Decision Tree

Having trouble holding a charge? Check out our decision tree below to pinpoint your problems and get back on the road fast. Click here for a detailed charging troubleshooting PDF.



Main Menu


Photo Contest



Click here to download print your own Delco Remy sign.

Main menu