Shop 2005 Buick Century Engine Coolant Bypass Hose. 4.6 LITER. 4.6 LITER, W/O TRAILER PKG. 4.6 LITER, W LITER, PKG, TRAILER - OEM Buick Part # 12566109

By - Passenger Hose. Engine Coolant Bypass Hose.
Engine Coolant Bypass Hose.

Engine Coolant Bypass Hose

Fits SRX, STS, XLR

4.6 LITER. 4.6 LITER, W/O TRAILER PKG. 4.6 LITER, W/TRAILER PKG.
Cooling System Bypass Line - Repair or Replace
If your 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 part.