P/N#921-3312 
 
Left-side Headlight assembly 4X6 Dual sealed beam bulb
Fits Mack Superliner, RD 686, RWS 786 LST Mfg part # 25037397 
 
BULBS: HI-BEAM H4651 P/N#425-414651  and HI-LOW H4656 P/N#425-414656
DUAL SMALL RECT CHROME BEZEL-SHORT P/N#447-412315
72" CABLE For Hardwire
 
CONNECTORS Available for purchase PACCAR-KENWORTH WEATHER PACK KIT P/N#411-231117
CONNECTORS Available for purchase DAIMLER-FREIGHTLINER WEATHER PACK KIT P/N#411-321122
CONNECTORS Available for purchase GENERIC WEATHER PACK KIT P/N#446-131113
 
For RIGHT Side P/N#921-3316 - Click Here for Part