Walbro 400 lph Competition In Tank Fuel Pump Kit (GST400-012)

This Walbro in-tank fuel pump kit is the GST400-012 Competition model, with a GST400 pump. It runs on 12 V DC and is compatible with pulse width modulation.

Maximum flow is 510 L/h; flow is 390 L/h at 3 bar (44 psi) and 285 L/h at 5 bar (73 psi). Maximum pressure is 7.5 bar. The inlet fitting is 11 mm and the outlet fitting is 9 mm. The pump measures 122 mm long, with a diameter of 50 / 39 mm. It is for petrol up to E10. Flow figures come from the seller's own flow test and are not factory figures.

Listed applications include BMW 5 (E39): 520 i (01.96–09.00 and 09.00–06.03), 523 i (11.95–09.00), 525 i (09.00–06.03), 528 i (11.95–09.00), 530 i (09.00–06.03), 535 i (04.96–03.99 and 04.99–06.03) and 540 i (04.96–06.03). BMW 5 Touring (E39) applications are 520 i (04.99–05.04, 01.97–09.00 and 09.00–05.04), 523 i (01.97–09.00), 525 i (09.00–05.04), 528 i (01.97–09.00), 530 i (09.00–05.04) and 540 i (01.97–05.04). BMW M5 E39 (99–03) is also listed.

Installation requires modifications to the wiring, fuel lines and fuel module; professional installation is recommended. The carrier shown is not part of the kit.