Fuel Pressure Regulator Bus '75-'79 Bosch

Fuel Pressure Regulator Bosch long number 0 280 160 200. This part controls fuel pressure at a preset value. If your fuel pressure is too high or too low, or the system pressure will not hold after the engine is shut off, you may need to replace this part. Genuine Bosch. This part has recently (2020) increased in cost dramatically from the manufacturer.

#3 on diagram