Shop 1999 Buick Century Pipe Assembly - Thermostat Bypass. Cooling System Bypass Line - Repair or Coolant, Cooling, Faulty - OEM Buick Part # 12703819 (12643769, 12724548)

Engine Coolant Bypass PipeEngine Coolant Bypass Hose

Fits Sierra 2500 HD, Sierra 3500 HD, Silverado

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.