BMW E36 Fog Light Duct for Cold Air Intake Left Right Set (Driver's Passenger Side) Replacement parts for the OEM E36 3-Series fog lights. These ducts can be routed to a cold air intake or used for additional brake cooling. The duct side has a 3" outer diameter (OD). Attaches via screws or adhesive. Please be advised that these are unfinished, unpainted parts and may show manufacturing marks. See photos for more details. For optimal results, it is recommended to sand, prime and paint these parts. Individual left and right side ducts as well as fog light blanks are also available! Replaces the following OEM part numbers 63178357389 63178357390 51118122449 51118122450 Will fit all 3-Series E36 BMWs from 1992 to 1998. 325i, 328i, 328is, 318i, 318is M3. Replica, 3D Printing ABS Parts that perfectly match the originals. Printed with high quality ABS that is heat and wear resistant. Please verify fitment prior to purchasing and ask any questions. We're happy to help! Older BMW parts are getting harder to find! Buy these and save! Made in the USA!