Engine Coolant Inlet Pipe for Water Manifold ??

This coolant inlet pipe is a key link between the engine water manifold and the cooling hoses. It is needed to guide coolant into the engine’s internal passages so heat can be carried away to the radiator. A healthy cooling circuit keeps combustion temperatures stable, protects head gasket sealing, and helps the heater work correctly.

How It Works ✅

Coolant flows through the pipe under pressure from the water pump. The pipe’s shaped bends keep clearance around the intake area while maintaining steady flow. Sealing surfaces and hose connections prevent air from entering the system, which is critical for proper circulation and avoiding hot spots.

Why Replacement Matters ⚠️

If this pipe cracks, corrodes, or the sealing edge gets pitted, you can get coolant leaks, a sweet smell, low coolant warnings, or overheating in traffic. A broken unit may cause air pockets, weak cabin heat, temperature spikes, and in worst cases warped components from repeated overheating. Replace at the first sign of seepage or crusty residue.

Compatible Models

• Qx50/Ex
• G37 Sedan
• Qx70/Fx
• Q70/M
• Q40/G Sedan
• Q50
• Q70/M Hybrid
• Q60/G Coupe
• Q60/G Convertible
• Q70(201802-)Lam
• M