can someone tell me the difference between a 2012 oem headlight on a is250. Vs. a 2012 ISF oem headlight? They look alike.

^ what he said. There is difference if non HID. ISF only came HID, base model halogen would have same HL as 2006-2010.

Should have revised HL with different color LED DRL and “eyelids” on lens. Also corrected the peeling internal paint issues. 2011 are slightly different than 2012-2013.