2004-2010 Genuine Original Factory Fit OEM Mercedes-Benz SLR-Class McLaren R199 Z199 722 Headlights Headlamp HID D2S Ballast (Xenon Light Control Unit / Module / Controller / ECU / Computer / Starter / Electronic Unit / Steuergerät /Inverter ) , D2S Philips Xenon Bulb ,Ignition , Lamp Retaining ring , Wires Cable Harness , Bulb Holder Ring , Projector Reflektor Bowls, Replacement Sale

Part will fit : Driver side / Passenger side / Left / Light / Front

Mercedes-Benz SLR-Class R199 , Z199 , C199 : 2-door coupé , 2-door roadster , 2-door speedster (Stirling Moss)

Engine 5.4 L (5,439 cc) supercharged M155 SLR V8
Power output 626 PS (460 kW; 617 hp)
780 N⋅m (575 lbf⋅ft);
650 PS (478 kW; 641 hp)
820 N⋅m (605 lbf⋅ft) (722 Edition/722 S/Stirling Moss)

722 Edition , Roadster , Roadster 722 S , 722 GT , Stirling Moss , McLaren Edition , SLR by MSO , HDK

7A1254.06

If your 2004-2010 Mercedes-Benz SLR-Class McLaren R199 Z199 C199 722GT HID Bi-Xenon Projector Headlight low beam or Headlamp projector housing high beam have problems, like light failed failure, flicker , bad , dipped beam very dim dimmer, dimming , got wet , getting dimmer, not working, flickering blinking , goes one and off , keeps going out , flashlight , beam pattern problems , making noise , not bright enough , not focused , stopped working , turning yellow and the dashboard displayer have warning light , error code , color inconsistency , color temperature , go up and down , moving up and donw , pointing down , overheating , distance control defective , leveling malfuncation ,turning pink , condensation , not turning off , gone ping , turned purple ,turned pink , trasig , not bright enough , flashing . warning light ,not working properly , adaptive function failure , keeps burning out , retrofitting challenges , have any other fault issues, troubleshooting , you only need to change or replace related original led xenon parts like: repair tips , transformer ballast, xenon bulb, control unit driver module , reflector , glare shield , waterproof , igniter , or wiring wire harness cable to repair and fix your xenon led headlamps is ok, no need to cost a lot of money to buy a whole brand new headlight assembly like the car dealer suggest.

Normally speaking, when your headlight have problem, check out the fuse first, if it’s ok, then replace the factory fit xenon control unit box ballast is ok, because from our many years experience, when the headlight not work, 90% of the problem is on the ballast.