- lazy tongs
- lead deposit
- lead tolerance
- leading arm
- leading shoe
- level plug
- levering bar
- legroom
- let in
- level out
- license plate
- liftgate
- lifting screw
- light gasoline
- light lorry
- light motorcycle
- light petrol
- light truck
- light unit
- line pressure
- line spanner
- lining
- liquid gasket
- liquid paint
- live weight
- liquid pump
- load
- load floor
- lobe
- lock
- locking differential
- locomotive accumulator
- lining wear
- list price
- load rating
- load resistor
- lock cylinder
- lock groove
- locomotive
- longitudinal engine
- lorry
- lorry loader
- lorry pooling
- lorry wheel
- lower shaft
- lube job
- lubricating pressure
- lubrication pipe
- lubrication system
- long-haul
- longitudinal mounting
- low gear
- low spot
- low tension
- low rider
- lower tank
- lubricating oil
- lubrication film
- lubrication point
- lubrication pump
- lug
- lug nut
- luggage carrier
- luggage van
- lumbar support
- lumber truck
- macpherson suspension
- macromolecule
- magnetic clutch
- magneto file
- main shaft
- main terminal
- lysholm supercharger
- machine screw
- main beam
- major diameter
- magnetized
- main bearings
- man
- manifold heater
- manual gearbox
- mark
- marsh buggy
- maneto ignition
- manual transmission
- mating gears
- mating thread
- maximum torque
- Mcpherson strut
- marque
- mass tone
- master cylinder
- mechanical efficiency
- mechanical plating
- merging lane
- meshing drive
- metal cutter
- methanol
- microbus
- mild steel