Bosch Fuel Pump Specs

Written by chelsea oliver
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Bosch Fuel Pump Specs
Bosch fuel pumps are suitable to serve as replacements in many vehicles. (yellow car, a honda Japanese sport car model image by alma_sacra from

Bosch manufactures and distributes a wide variety of auto parts. Alongside products such as filters, alternators, brakes, starters and spark plugs, the company offers a number of turbine fuel pumps. Bosch fuel pumps most often serve as replacements in automobiles and feature such elements as polymer-encased armature, non-return valves and noise suppression coils.

Bosch In Tank 040 Fuel Pump

Bosch intends the in tank fuel pump as a replacement and recommends it for automobiles that exceed OE specifications. Made in a universal style, it is suitable for use in vehicles with a horsepower of up to 700. It has an open base inlet connection, M10 by 1.0 outlet connection and a positive M6 by negative M5 electrical connection. The minimum current is 12 volts with an operating pressure of 94 PSI, and the minimum flow at the outlet is 80 GPH, or 300 LPH. It weighs in at 0.93 Kilogram and has a high temperature reduction of 8 GPH.

Bosch Inline 044 Fuel Pump

This fuel pump mounts outside of the gas tank of a vehicle, or inline, and is generally centred in the rear. It can be used at the same time as a Bosch 040 fuel pump and with vehicles of up to 600 to 700 horsepower. It operates on a 12-volt current with a minimum 72.5 PSI. The inlet connection is M18 by 1.5, the electrical connection is a positive M6 by negative M5 and the outlet connection is M12 by 1.5. It has a high temperature reduction of 8 GPH, a minimum flow at the outlet of 80 GPH and weighs 1,030 grams, or 103 Kilogram.

Bosch Inline 909 Fuel Pump

This Bosch fuel pumps mounts in vehicles in an identical fashion as the 044. It offers the same minimum current and operating pressure as the above in line model, but the minimum flow at the outlet is considerably less at 39 GPH, or 148 LPH. The inlet and electrical fuel pump connections are also different, with a 12mm inlet connection and a positive M5 by negative M4 electrical connection, while the outlet connection remains the same at M12 by 1.5.

Other Bosch Inline Fuel Pumps

Bosch manufactures several other inline fuel pumps. The 910, 979, 911 and 984 models all mount identically in automobiles and run on a 12-volt minimum current. All but the 911 model, which has an operating pressure of 58 PSI, have an operating pressure of 72.5 PSI, and the minimum flow varies from 25.1 GPH to 43.6 GPH. The 910 and 979 models have identical outlet and electrical connections at M12 by 1.5 and positive M5 by negative M4, while the inlet connection of the former is 15mm and of the latter is M14 by 1.5. Similarly, the 911 and 984 inline fuel pumps have identical electrical and outlet connections, while the inlet connections vary at 15mm by 1.5 and 12mm by 1.5 respectively.

Features and Benefits

Alongside the electrical and power specifications of specific models, all Bosch fuel pumps are made with certain core components. A noise suppression coil eliminates interference from radio frequencies, a non-return valve both reduces hot start problems and maintains the pressure of the system and a Bosch impeller ring allows for smooth fuel flow. Additionally, premium carbon brushes and spin-balanced, polymer-encased armature offers a longer service life and reduced vibration and noise.

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