Buy OEM Mazda Part # L3G615260A (L3G6-15-260A, ). Engine Coolant Bypass Hose. 2.5 LITER. 2.5 LITER, 2011-13. 2.5 LITER, to engine. W/O MAZDASPEED, 2.3L. Cooling System Bypass Line -

Hose. Bypass. Coolant.
Engine Coolant Bypass Hose. BYPAS. By - Passenger. Engine. Inlet tube.

Fits 5, CX-7, Mazda 3, Mazda 5, Mazda 6

2.5 LITER. 2.5 LITER, 2011-13. 2.5 LITER, to engine. W/O MAZDASPEED, 2.3L.
Cooling System Bypass Line - Repair or Replace
If your Mazda has been either leaking coolant or overheating, you could have a faulty cooling system bypass line. Let our technicians help trace the problem and replace the faulty coolant hose with a genuine Mazda part.