Purpose and Function
Modern EFI fuel systems circulate as much as 200 litres per hour
(~ 3 litres / min ) of fuel at pressures between 2.5 - 3.5 bar ( 250 - 350 kpa )
Modern electric fuel pumps are “Positive Displacement” type pumps, this
means that the pump cannot produce pressure unless it is acting upon a
restriction. The only restriction in the system should be the fuel pressure reg-
ulator. The regulator controls the system pressure; the pressure ability or
flow volume capacity of the fuel pump will not alter the system pressure.
Due to the high pressure and volume requirements placed upon these
pumps, manufacturing tolerances are extremely fine. Motor speeds can be as
high as 10,000 RPM and the clearances within the pumping elements down
to microns. Cleanliness of the fuel system is vital, with an efficient high qual-
ity filter as an essential part of the fuel system.

Important Note.

• Bosch Fuel Pumps have their flow rates defined in N-Heptane as part of their engineering specification. N-Heptane is a pure
chemical and does not have the same viscosity and density as standard petrol. Hence the N-Heptane flow rate figures stated
should be used as a general guide for comparison purposes only.

• Bosch Fuel Pumps are designed for use with standard grade petrol. Subject to statutory warranties, Bosch does not warrant
the performance characteristics or specifications of these fuel pumps if they are used with Alcohol or Ethanol based fuels or
fuel additives that are corrosive.

Cap Nuts, Copper Washers and Banjo Bolts may be required for installation. These can be found in the "Technical Service Parts"
section of this catalogue. Replacement "Fuel Pump Check Valves" are also listed there if applicable.

(F) = Female fitting with internal check valve.

* Operating voltage = 12v, test pressures indicated are also suggested maximum operating pressures.
Flow specifications achieved after initial “running in” period of 20 minutes.


Bosch Universal Fuel Pump Specs TECHNICAL DATA

Part Number Flow Qty*  litres / hour Pressure Inlet Connection Outlet Connection Length (mm) Diameter (mm) Max Power Cons (Amps) Electrical Connection (- / +)
0 580 254 023 168 (5 Bar) open base M10 x 1.0 169 60 10 M5/M6
0 580 254 040 102 (6.5 Bar) open base M10 x 1.0 169 60 11 M5/M6
0 580 254 044 200 (5 Bar) M18 x1.5 M12 x 1.5 196 60 15.5 M5/M6
0 580 254 046 207 (3 Bar) M14 x 1.5 M12 x 1.5 (F) 169 60 10.5 M4/M5
0 580 254 053 175 (5 Bar) 12mm (3/8") M12 x 1.5 180 60 11.5 M4/M5
0 580 254 909 148 (5 Bar) 12mm (3/8") M12 x 1.5 180 60 10 M4/M5
0 580 254 910 130 (5 Bar) 15mm (1/2") M12 x 1.5 203 60 10 M4/M5
0 580 254 911 95 (4 Bar) 15mm (1/2") M12 x 1.5 199 52 5.2 M4/M5
0 580 254 975 165 (5 Bar) 15mm (1/2") M12 x 1.5 (F) 180 60 10 M4/M5
0 580 254 979 165 (5 Bar) M14 x 1.5 M12 x 1.5 (F) 168 60 10 M4/M5
0 580 254 984 165 (5 Bar) 12mm (3/8") M12 x 1.5 (F) 180 60 10 M4/M5
0 580 464 069 98 (4 Bar) 12mm (3/8") M12 x 1.5 186 60 7 M4/M5
0 580 464 070 130 (3 Bar) 12mm (3/8") 8mm (5/16") 175 52 6.5 M4/M5
B 261 205 413 200 (8 Bar) M18 x1.5 M12 x 1.5 196 60 15.5 M5/M6


A = Diameter C = Length
B = Inlet/Suction Connection Size D = Outlet/Pressure Connection Size



Notice to Purchaser / Installer

All Bosch fuel pumps are fully tested and sealed prior to delivery. They are manufactured to the latest design and quality control speci-
fications for their intended application.

Important Information

Always follow the vehicle manufacturers fitting / replacement instructions. Before fitting a fuel pump the following checks should be

• Ensure the entire fuel injection system is clean and free from contaminants.
• Ensure that the correct fuse is fitted. [ use manufacturers recommendation ]
• Inspect and fit a new fuel filter and in-tank strainer to the system. [ use only recommended parts ]
• Vehicles operating on dual fuel must have a quarter of a tank of petrol at all times.
• It is recommended that the vehicle be operated on petrol at least one day per week to keep the system operating correctly.
Failure to operate your vehicle in this way can degrade performance due to stale fuel and the formation of gums and varnish in
the fuel system.

Bosch warranty does not cover failure due to the ingress of foreign matter, incorrect application or insufficient fuel supply. All fuel
pumps returned under warranty will be inspected prior to claim settlement.

Before fitting new pump

Before fitting a replacement 12v fuel pump, please investigate the reason for the failure of the existing pump and rectify as neccessary.
Check the current draw of the fuel pump which should be less than 6.5 amps for EFI systems; for K and KE Jetronic systems 11
amps. Excessive current draw or noisy operation can indicate foreign material in the pump roller cell. Use only a fuse having the correct
rating as specified by the vehicle manufacturer.

After removing the old pump from the vehicle, empty the contents of the pump into a container. Examine the fuel for signs of foreign
material including rust, rubber, varnish, plastic etc. The complete system should be inspected and cleaned if neccessary; this includes
the fuel tank, fuel rail, pressure regulator, tank pickup unit and strainer.

When refitting the hoses to the pump and fuel filter, take care not to damage the hoses as small rubber particles can circulate through
the system and become jammed in the fuel pump, regulator or injector. Fit new fuel pump, check the current draw, check fuel rail pressure.

Bosch warranty does not cover failure that results from the ingress of foreign matter; incorrect application or damage resulting from
pumps operating with insufficient fuel in the tank as in LPG conversions.