Atlantic Detroit Diesel Allison

Closed
300 Smith St
Middletown, CT 06457

Atlantic Detroit Diesel-Allison (ADDA) is a leading provider of diesel and alternative-fuel engines, transmissions, power-generation systems, and related components. With five locations across New Jersey, New York, Massachusetts, and Connecticut, ADDA serves a wide range of markets, including on-highway and off-highway vehicles, marine applications, and industrial machinery.

As a factory-authorized distributor for renowned brands such as Detroit, mtu, Mercedes-Benz, and Volvo Penta, ADDA is committed to delivering expert service and reliable products that ensure maximum efficiency for its customers. Whether for medium- and heavy-duty trucks, buses, or power-generation systems, ADDA is dedicated to supporting critical operations in both government and private sectors.

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