do you mean oem like dealer part, or do you mean oreilys. against say using an aftermarket raiator that is bigger, im confused. if you are wonderin what is better i use oreily radiators in all my customers cars and ive never had any complaints. or comebacks:runaway: :runaway: :headbang: :headbang: :headbang: :headbang: :headbang: :headbang: :headbang: :headbang: :headbang: :headbang: