2132-8600201
Alternator 28SI 12V 160A
Mack

This alternator from the 28SI family delivers a robust 160-amp, 12-volt output designed to meet the electrical demands of modern Mack trucks. It features a compact, ribbed case that promotes efficient heat dissipation and a sealed rear housing to guard against moisture and dust. The internal regulator maintains steady voltage across a wide engine speed range, ensuring consistent battery charging even with high amp draws from HVAC, lighting, telematics, and aftermarket equipment. The unit uses heavy-duty bearings and bushings rated for long service life in rugged fleet environments, reducing the risk of unexpected failure on the road. The fan and pulley system are engineered for reliable belt alignment, minimizing belt wear and guarding against slip. The connector harness is designed to be plug-and-play with common Mack mounting patterns, allowing straightforward installation during PM cycles or part replacements. Regular maintenance and correct torque on mounting bolts help maximize efficiency and lifespan. Source One Parts Center provides OE-accurate replacements that keep electrical systems running at peak performance.