Mazda 3/5/6/CX-7 Oil Cooler LEAKS (REAL REASON!)

The Mazda 3, Mazda 5, Mazda 6 and Mazda CX-7 oil cooler seal has been known to leak. Here is why - and here are the part numbers needed to fix the problem: Seal: LF8X-14-702 Oil cooler WITH seal: LF6W-14-700A Oil cooler bolt: LF9V-14-789