Shop 18 headlight adjust screw from 8 trusted brands including DT Spare Parts, HELLA, TOPRAN. Compare prices, check vehicle compatibility, and get free delivery on orders over £99.
The headlight adjustment screw or motor sets the vertical and horizontal beam angle. Manual adjusters use a screw and gear mechanism; electric versions integrate a small motor controlled by a dashboard switch or automatic levelling system. A faulty adjuster prevents correct beam aim and is an MOT failure.
Replacement is needed when the beam aim is impossible to set within tolerance or the adjuster physically fails. Beam aim is checked at every MOT.
Adjusters are specific to the headlight model. Some can be replaced separately; others require buying the complete headlight unit.
Adjusters are exposed to heat, vibration, and water. Plastic gears and electric motors are the typical failure points.
The beam-aim system involves several parts. Check the surrounding components when an adjuster fails.
Commonly searched OE numbers fitting Headlight Adjust Screw from the TecDoc catalogue.