The BBB Industries N13794 80 Amp Alternator is engineered to meet the electrical demands of select Toyota models including the 1999 2002 4Runner 2000 2002 Tacoma and 2000 2004 Tundra all equipped with the 3 4L V6 engine This alternator delivers a consistent 80 amp output ensuring reliable power for vehicle systems and accessories Designed as a direct replacement for the original equipment it features a conventional 4 groove pulley with a 2 3 16 diameter compatible with serpentine belt systems The internal fand air cooling method facilitate efficient heat dissipation enhancing the alternator s performance and longevity With a negative polarity and internal voltage regulator the N13794 aligns with the specifications of the original Nippondenso unit ensuring seamless integrationd optimal functionality This new alternator offers a dependable solution for maintaining the electrical system s integrity in these Toyota models contributing to the vehicle s overall reliability and performance