Bosch 1986A00917 is a 24-volt, 80-amp automotive alternator designed for Volvo heavy-duty trucks. It uses an 8-groove belt pulley with a 63 mm pulley diameter and clockwise rotation, commonly installed on Volvo FH and FM12/D12C variants. Associated Volvo original equipment numbers include 11170134, 11170321, 20409228, 20409240, 20849349, and 21429783. Bosch cross-references for this unit include 0124555009, 0124555020, 0124555027, 0124555028, 0124655008, 0986046290, 1986A00535, and F042301130.
