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Engine for your motorcycle

Engine for Top motorbike brands
  • High quality Engine for HONDA MOTORCYCLES
  • High quality Engine for SUZUKI MOTORCYCLES
  • High quality Engine for TRIUMPH MOTORCYCLES
  • High quality Engine for YAMAHA MOTORCYCLES
  • High quality Engine for BMW MOTORCYCLES
  • High quality Engine for KAWASAKI MOTORCYCLES
  • HARLEY-DAVIDSON MC
  • KTM MOTORCYCLES
  • VESPA MOTORCYCLES
  • DUCATI MOTORCYCLES
  • ROYAL ENFIELD MC
  • PEUGEOT MOTORCYCLES
  • KYMCO MOTORCYCLES
  • HUSQVARNA MOTORCYCLE
  • APRILIA MOTORCYCLES
  • MOTO GUZZI MC
  • SYM MOTORCYCLES
  • INDIAN MOTORCYCLES
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A motorcycle engine converts the energy of fuel combustion into a mechanical one. It is transmitted to the wheels and sets the bike in motion.

Main motorcycle engine components

  • Cylinder(s). The air-fuel mixture is compressed and burnt inside it.
  • Cylinder head. It protects parts of the valvetrain from dirt and shocks. Inlet and exhaust valves, as well as spark plugs, are installed in it.
  • Valves. They ensure the supply of air-fuel mixture to the cylinder(s) as well as the discharge of exhaust gases. They are centred with the help of valve guides.
  • Fuel pump. It is responsible for the continuous supply of fuel to a carburettor or injectors.
  • Rotating assembly. Its main components are:
    • Piston. Driven by the pressure formed by burning the fuel in an enclosed space, it moves inside the cylinder sleeve. From the piston, this movement is transferred to the connecting rod, and from there - to the crankshaft.
    • Piston rings. They prevent exhaust gases from getting inside the crankcase and reduce the consumption of engine oil. As a rule, they are sold as a set.
    • Crankshaft. The reciprocating motion of the pistons is transferred to it via the connecting rod. The crankshaft converts it into torque.
    • Crankshaft bearing. It supports the shaft and ensures its rotation with as little friction as possible.
  • Camshaft. It receives the torque from the crankshaft is responsible for opening and closing the valves in a specific sequence.
  • Crankcase. Joins all engine components together into a single unit, takes part in its cooling.
  • Crankcase breather filter. Prevents oil fumes from getting inside the combustion chamber.
  • Fuel injector. It supplies a particular amount of fuel and atomizes it.
  • Electronic devices. This category includes:
    • Sensors. These devices measure various parameters that affect the performance of the power unit. For example, on the basis of the data received from the throttle position sensor (potentiometer), the engine control unit calculates the required amount of fuel. Apart from that, motorcycles also have lambda sensors, sensors that measure and detect oil pressure and temperature, coolant temperature, ignition pulse, intake-air flow and temperature, knock, camshaft position and some other.
    • Engine control unit. Controls the performance of an engine due to the information supplied by the sensors.
  • Gaskets, seals and O-rings. Ensure that the following elements are air-tight:
    • fuel injector(s);
    • oil filter;
    • oil pan;
    • oil filler neck;
    • cylinder head and its cover;
    • crankshafts, camshafts and other components.

Malfunctions: their causes and symptoms

  • Mechanical damage. Faulty parts will produce extraneous sounds. Such malfunction may be caused by slipshod repairs, for instance.
  • Oxidation. It is accompanied by motorcycle engine malfunctions. Parts might become oxidized due to moisture exposure after washing the vehicle or riding it through puddles.
  • Thermal damage. In particular, gaskets and seals are subjected to it. In that case, it is difficult to start the vehicle. These malfunctions are usually caused by engine overheating due to high loads.

Tips on how to use and replace motorcycle engine components

  • Any kind of malfunction should be eliminated as soon as possible. Riding a bike with a faulty engine might result in an accident.
  • Most of the components do not have a specified service life. In order to extend it, it is necessary to control the lubricant level so as not to let the motorcycle engine overheat.
  • The assembly must be serviced in accordance with the manufacturer’s recommendations. If you don’t have the required skills, it is better to have professionals repair and replace the parts

AUTODOC: only high-quality motorcycle parts

If you need to buy motorcycle engine components urgently, take a look at our range of inexpensive but high-quality products. After placing your order online, you’ll receive your items within the shortest time possible.

Best-selling motorcycle spare parts and consumables

We recommend our bestsellers in the category of Engine. The following motorcycle replacement parts were most frequently ordered by our customers.
  • BOSCH 0 258 986 602 Lambda Sensor Lambda Sensor 0 258 986 602 at a discount — buy now!
    BOSCH Lambda Sensor Article number: 0 258 986 602 Use number: 15733
    Product info:
    • Number of circuits: 4
    • Recommended replace interval [km]: 160000
    • Connector / Clamp: Connector may need adjustment
    • Item number0 258 986 602
    • Our price39,14 £
    • Condition  New
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    £ 55,91**
    -30%

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    £ 39,14

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  • BOSCH 1 280 210 752 Seal Ring, injector Seal Ring, injector 1 280 210 752 at a discount — buy now!
    BOSCH Seal Ring, injector Article number: 1 280 210 752
    Product info:
    • Item number1 280 210 752
    • Our price1,27 £
    • Condition  New
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    £ 1,82**
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    £ 1,27

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  • FA1 968.330.100 Seal, oil drain plug Copper Seal, oil drain plug 968.330.100 at a discount — buy now!
    FA1 Seal, oil drain plug Article number: 968.330.100
    Product info:
    • Material: Copper
    • Inner diameter [mm]: 16
    • Thickness [mm]: 2
    • Shape: C-Shape
    • Diameter [mm]: 22
    • Item number968.330.100
    • Our price0,25 £
    • Condition  New
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    £ 0,35**
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    £ 0,25

    incl. 20% VAT, excl. delivery costs,

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  • STARK SKLS-0140232 Lambda Sensor Lambda Sensor SKLS-0140232 at a discount — buy now!
    STARK Lambda Sensor Article number: SKLS-0140232
    Product info:
    • Lambda Sensor: Heated
    • Conductor Number: 4
    • Connector / Clamp: Connector may need adjustment
    • Item numberSKLS-0140232
    • Our price28,91 £
    • Condition  New
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    £ 41,30**
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    £ 28,91

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  • BOSCH Lambda Sensor Article number: 0 258 986 505 Use number: 15738
    Product info:
    • Number of circuits: 4
    • Recommended replace interval [km]: 160000
    • Connector / Clamp: Connector may need adjustment
    • Item number0 258 986 505
    • Our price38,88 £
    • Condition  New
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    £ 55,54**
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    £ 38,88

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  • ELRING 247.405 Seal, oil drain plug Aluminium Seal, oil drain plug 247.405 at a discount — buy now!
    ELRING Seal, oil drain plug Article number: 247.405
    Product info:
    • Material: Aluminium
    • Inner diameter [mm]: 18
    • Thickness [mm]: 1,5
    • Shape: A-shape
    • DIN / ISO: 7603
    • Diameter [mm]: 22
    • Item number247.405
    • Our price0,17 £
    • Condition  New
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    £ 0,24**
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    £ 0,17

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  • STARK SKLS-0140089 Lambda Sensor Lambda Sensor SKLS-0140089 at a discount — buy now!
    STARK Lambda Sensor Article number: SKLS-0140089
    Product info:
    • Lambda Sensor: Heated
    • Number of Poles: 4
    • Connector / Clamp: Connector may need adjustment
    • Item numberSKLS-0140089
    • Our price31,92 £
    • Condition  New
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    £ 45,60**
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    £ 31,92

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  • LEMA 23505.09 Seal, crankcase breather Seal, crankcase breather 23505.09 at a discount — buy now!
    LEMA Seal, crankcase breather Article number: 23505.09
    Product info:
    • Weight [g]: 6
    • Item number23505.09
    • Our price12,59 £
    • Condition  New
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    £ 17,99**
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    £ 12,59

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  • FAST FT94716 Seal, oil filler cap Seal, oil filler cap FT94716 at a discount — buy now!
    FAST Seal, oil filler cap Article number: FT94716
    Product info:
    • Thickness [mm]: 2
    • Shape: C-Shape
    • Material: Copper
    • Inner diameter [mm]: 16
    • Diameter [mm]: 22
    • Item numberFT94716
    • Our price0,36 £
    • Condition  New
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    £ 0,52**
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    £ 0,36

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  • BOSCH 0 258 003 475 Lambda Sensor Lambda Sensor 0 258 003 475 at a discount — buy now!
    BOSCH Lambda Sensor Article number: 0 258 003 475 Use number: 0258986505
    Product info:
    • Overall Length [mm]: 580
    • Number of circuits: 4
    • Recommended replace interval [km]: 160000
    • Item number0 258 003 475
    • Our price57,23 £
    • Condition  New
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    £ 81,75**
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    £ 57,23

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