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Fuel supply system car spares

Fuel supply system car spares for Top Car brand

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Fuel supply system car parts - all important information about operating method, mounting, diagnostics and service life

A vehicle’s fuel system is designed to store and filter fuel, as well as supply it to the engine cylinders. Engine stability and performance depend on it.

Design of the fuel system

The fuel systems of various vehicles may differ. The main differences lie in the way the fuel is injected. Nevertheless, every vehicle has a tank to store fuel, a filter to purify it, a pump to supply it to the engine, delivery and return pipelines, and sensors which monitor, among other things, fuel level and other parameters.

Petrol vehicles may have the following types of fuel injection:

  • Single-point fuel injection (SPI). A single injector supplies fuel into the inlet manifold. This is where the air-fuel mixture is formed.
  • Multipoint fuel injection (MPI). There is an injector for each cylinder in the system. The fuel supply line is divided with the help of a special fuel distributor.
  • Direct fuel injection. This includes a high-pressure line with another pump and a fuel rail. Fuel is supplied directly to the combustion chambers under high pressure.
  • Combined fuel injection. Such fuel systems are equipped with high and low pressure fuel rails. High-pressure fuel injectors are installed into combustion chambers, while the low-pressure ones are built into the inlet manifold. The control unit selects the method of fuel supply depending on the engine operating mode.

The following types of injection systems are common in diesel vehicles:

  • High pressure fuel pump. Fuel is supplied to the injectors via high pressure pump.
  • Unit injectors. They ensure a layered injection of the fuel right into the combustion chambers. These components are driven by the camshaft.
  • Common Rail. This encompasses a rail and a high-pressure fuel pump. The injectors are installed in the combustion chambers and are connected with the rail via a high-pressure pipeline.

Maintenance tips

  • Refuel your vehicle at reliable filling stations. This will help you avoid corrosion and deposits in the fuel system, as well as to avoid the contamination of its components.
  • Replace fuel filters on time. If the throughput capacity of a filter is restricted, all components of the fuel system are exposed to severe strain.
  • Keep your fuel tank at least half full, especially during cold weather. Otherwise, the condensation may cause difficulties with starting the engine. Sometimes tanks begin to rust.
  • Every six months, add a special additive to the fuel tank to remove moisture. This is an excellent preventive measure which will help to extend the service life of the system’s components.
  • Regularly clean the injectors. In some cases, you can use a special additive for that purpose. However, it is much more effective to have them cleaned at a car repair shop.

Signs of malfunction

Difficulties when starting engine or reduced engine power can be caused by a diminished performance of the fuel pump. Engine malfunctions in every mode is a sign of a clogged filter. The same symptoms can be observed when the return pipeline is deformed, but in this case, the problem is accompanied by increased fuel consumption. The smell of petrol, coloured puddles beneath your car after parking, and significantly increased fuel consumption are symptoms of a leaky fuel system. Clogged injectors may result in engine misfiring, unusual sounds, and jerky movements while driving.

Causes of malfunction

These problems mostly occur due to fuel that is low in quality or contaminated. It contains particles which clog the filter and other system components. As a result, the pump can break down. Water is also harmful, especially, for diesel engines: The components of the fuel system are made of materials prone to corrosion. This may cause moving parts to jam. Furthermore, the throughput capacity of the injectors and pressure regulator is impaired.

Autodoc.co.uk: Only high-quality automotive products

You can always buy high-quality fuel system components for your vehicle in our online shop. They are offered at affordable prices. Additionally, you have an opportunity to save on delivery.

Top 10 of best sellers from the Fuel supply system section

Recommended spare parts from the Fuel supply system section. These are the sales hits. Buy our best sellling items or discover a vast selection of other attractive offers.
-26%
Buy Lambda Sensor BOSCH 0 258 017 025 - Fuel supply system parts online
Lambda Sensor
Article number: 0 258 017 025
£ 93,75
incl. 20% VAT , excl. delivery costs,
  • Overall Length [mm]: 1000
  • Number of circuits: 5
  • Recommended replace interval [km]: 250000
  • BOSCH  Lambda Sensor
  • Item number  0 258 017 025
  • Manufacturer's suggested retail price   £ 126,69
  • Our price   £ 93,75
  • Condition  New
Details
-26%
Buy Lambda Sensor DENSO DOX-0109 - Fuel supply system parts online
Lambda Sensor
Article number: DOX-0109
£ 38,01
incl. 20% VAT , excl. delivery costs,
  • Thread Size: M18x1.5
  • Cable Length [mm]: 750
  • Number of Poles: 4
  • Product line: Universal fit
  • Quality: OE
  • Weight [g]: 103
  • DENSO  Lambda Sensor
  • Item number  DOX-0109
  • Manufacturer's suggested retail price   £ 51,37
  • Our price   £ 38,01
  • Condition  New
Details
-26%
Buy Injector Nozzle VDO A2C59511612 - Fuel supply system parts online
Injector Nozzle
Article number: A2C59511612
£ 320,75
incl. 20% VAT , free delivery
  • Part number of recommended accessories: X11-800-002-004Z, X11-800-001-001Z
  • Observe the vehicle manufacturer specifications
  • Supplementary Article / Supplementary Info: with seal
  • Fuel Type: Diesel
  • Always compare old and new part (in particular OE No.)
  • VDO  Injector Nozzle
  • Item number  A2C59511612
  • Manufacturer's suggested retail price   £ 433,44
  • Our price   £ 320,75
  • Condition  New
Details
-26%
Buy Injector BOSCH 0 280 155 968 - Fuel supply system parts online
Injector
Article number: 0 280 155 968
£ 41,85
incl. 20% VAT , excl. delivery costs,
  • Fuel Mixture Formation: Petrol Injection
  • Static flow rate at 3 bar, medium N-Heptane [g / min]: 310
  • Resistor [Ohm]: 12
  • BOSCH  Injector
  • Item number  0 280 155 968
  • Manufacturer's suggested retail price   £ 56,56
  • Our price   £ 41,85
  • Condition  New
Details
-26%
Fuel filter MANN-FILTER WK 842 - Fuel supply system spare parts order
Fuel filter
Article number: WK 842
£ 12,31
incl. 20% VAT , excl. delivery costs,
  • Filter type: Spin-on Filter
  • Height [mm]: 156
  • Diameter [mm]: 81
  • Outer diameter 2 [mm]: 70
  • Thread Size Exit: M 16 X 1.5
  • Inner diameter 2 [mm]: 61
  • MANN-FILTER  Fuel filter
  • Item number  WK 842
  • Manufacturer's suggested retail price   £ 16,63
  • Our price   £ 12,31
  • Condition  New
Details
-26%
Lambda Sensor BOSCH 0 258 006 924 - Fuel supply system spare parts order
Lambda Sensor
Article number: 0 258 006 924
£ 71,41
incl. 20% VAT , excl. delivery costs,
  • Overall Length [mm]: 325
  • Number of circuits: 4
  • Recommended replace interval [km]: 250000
  • BOSCH  Lambda Sensor
  • Item number  0 258 006 924
  • Manufacturer's suggested retail price   £ 96,50
  • Our price   £ 71,41
  • Condition  New
Details
-26%
Nozzle and Holder Assembly DELPHI 28237259 - Fuel supply system spare parts order
Nozzle and Holder Assembly
Article number: 28237259
£ 257,18
incl. 20% VAT , free delivery
  • DELPHI  Nozzle and Holder Assembly
  • Item number  28237259
  • Manufacturer's suggested retail price   £ 347,54
  • Our price   £ 257,18
  • Condition  New
Details
-26%
Sealing Cap, fuel tank FEBI BILSTEIN 45550 - Fuel supply system spare parts order
Sealing Cap, fuel tank
Article number: 45550
£ 12,40
incl. 20% VAT , excl. delivery costs,
  • for OE number: 16 11 7 222 330
  • Material: Plastic
  • Colour: Black
  • Weight [kg]: 0,06
  • FEBI BILSTEIN  Sealing Cap, fuel tank
  • Item number  45550
  • Manufacturer's suggested retail price   £ 16,75
  • Our price   £ 12,40
  • Condition  New
Details
-26%
Fuel supply system parts - Injector Nozzle VDO 5WS40148-Z
Injector Nozzle
Article number: 5WS40148-Z
£ 291,42
incl. 20% VAT , free delivery
  • Part number of recommended accessories: X11-800-002-004Z, X11-800-001-001Z
  • Observe the vehicle manufacturer specifications
  • Supplementary Article / Supplementary Info: with seal
  • Fuel Type: Diesel
  • Always compare old and new part (in particular OE No.)
  • VDO  Injector Nozzle
  • Item number  5WS40148-Z
  • Manufacturer's suggested retail price   £ 393,81
  • Our price   £ 291,42
  • Condition  New
Details
-26%
Fuel supply system parts - Lambda Sensor DENSO DOX-0261
Lambda Sensor
Article number: DOX-0261
£ 99,45
incl. 20% VAT , excl. delivery costs,
  • Thread Size: M18x1.5
  • Cable Length [mm]: 510
  • Number of Poles: 4
  • Product line: Direct Fit
  • Quality: OE
  • Weight [g]: 100
  • Manufacturer Restriction: DENSO
  • DENSO  Lambda Sensor
  • Item number  DOX-0261
  • Manufacturer's suggested retail price   £ 134,39
  • Our price   £ 99,45
  • Condition  New
Details