Manufacturer: HELLA. Interchange Part Numbers: 0 320 146 101--BOSCH, 0 986 320 301--BOSCH, TYPE A 270 DEG, 24V LOW; STEEL--FD4, 3BA 002 768-382--HELLA, 36--B, 20024--E1. Signal: Low Tone. Sealey Air Compressor 270L Belt Drive.
eBay