This is the "Bosch 044" external in-line fuel pump that is very popular in the aftermarket fuel systems world.
Bosch 044 Fuel Pump Specs:Bosch Part Number: 0 580 254 044Operating Pressure: 72.5 PSI (5 Bar)Minimum Flow @ Outlet: 80 GPH (300 LPH)Fuel Pump Location: In-LineHigh Temperature Reduction: 8 GPH (30 LPH)Weight: 1030 Grams (2.27 Pounds)
Fuel Pump Connections:Inlet: M18 x 1.5Outlet: M12 x 1.5Minimum Current: 12 VoltsElectrical: Positive M6 / Negative M5