Become an expert on all things motoring! This dictionary of terms and phrases will help you understand exactly what things are, what gets done and why.

Definitions starting with L

  • Lift Supports

    Lift supports help you open and close heavy parts like your bonnet or boot by hydraulic lifts. These lifts can lose fluid and fail to operate properly, but can easily be replaced.

  • Light-Emitting Diode (LED)

    Light-Emitting Diodes provide better illumination, last longer, and use less energy than the incandescent lights found in older cars, but they are more expensive. LEDs can be used in the car interior, in the instruments in the dash, and in headlights. They are available in a variety of colours, allowing you to personalise your car.

  • Lock Cylinders

    Lock cylinders are part of the locking system of your car. The lock cylinder is where the key fits. You will have to replace the lock if the lock cylinder is damaged.

  • Lock Nut

    Lock nuts help keep your bolts in place so they don’t vibrate loose.

  • Lubricant

    Lubricant reduces friction between moving parts. Engine oil, grease, and hydraulic fluid are all lubricants necessary to keep the engine running efficiently and prevent parts from wearing out.

  • Lug Bolt

    Lug bolts are the bolts that attach the wheel hub or brake drum to the wheel.

  • Lug Nut

    A lug nut is a tapered nut that attaches threaded wheel studs connected to your car’s axle to the wheel.

  • Lug Wrench

    A lug wrench helps to remove lug nuts on your car wheels. Most cars have a lug wrench as part of the jacking kit located in the trunk near the spare tyre.


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