Delco Remy 20SI Brushless Alternator 3016627 for Cummins, 24V 35A

The Delco Remy 20SI Brushless Alternator (model 3016627) is a heavy-duty, high-reliability charging system designed for Cummins engines and other industrial applications, such as trucks, buses, marine, and off-highway equipment. This 24-volt, 35-amp unit features a brushless design, which eliminates the need for brush maintenance, reducing downtime and extending service life compared to brushed alternators. It includes a 5-groove serpentine pulley for efficient belt drive integration and regulated output of 26.4V for stable battery charging. Key benefits include robust construction for harsh environments, high efficiency at low RPMs, and compatibility with Cummins engines (cross-referenced as Cummins part 3016627). Advantages over similar products like basic automotive alternators include superior durability in vibration-heavy settings, better heat dissipation, and lower failure rates. Drawbacks may include higher initial cost and specificity to 24V systems, limiting versatility. Ideal for fleet maintenance, power generation backups, and industrial machinery where reliable electrical output is critical. This unit appears unused and in original packaging, making it suitable for immediate installation.