Engine Coolant Inlet Pipe for Water Pump
This coolant inlet pipe is a key link between the radiator hose circuit and the water pump. It’s needed to feed the pump with a steady supply of coolant so the engine can hold correct operating temperature in traffic, on highways, and under load.
How It Works
The pipe forms a sealed passage for coolant flow into the water pump. With proper O-ring/gasket sealing and correct alignment, coolant moves smoothly without air leaks. A strong metal body helps resist heat cycles, vibration, and corrosion from long-life antifreeze.
What Happens If It’s Broken
Cracks, rust pinholes, or warped sealing surfaces can cause coolant leaks, air entering the system, and weak circulation. Symptoms often include coolant smell, wet marks near the pump area, overheating, heater blowing cold, and repeated low coolant warnings. If ignored, overheating may lead to head gasket damage and expensive engine repairs ⚠️
Technician Tips
- Replace seals/O-rings during installation to prevent repeat leaks.
- Bleed air from the cooling system after fitting.
- Check hose clamps and coolant condition at the same time.
✅ Compatible Models
- Outlander
- Lancer
- Outlander Sport
- ASX
- RVR
- Lancer Sportback
- Delica D:5
- Delica D:5/Space Wagon
- Galant Fortis/Lancer Evolution
- Galant Fortis Sportback
