Genuine Land Rover LR186859 Engine Coolant Outlet Flange Thermostat to Top Hose Pipe

The Genuine Land Rover LR186859 is an OEM Engine Coolant Outlet Flange — also commonly referred to as a coolant pipe, thermostat water connector, or top hose crossover — designed to route coolant from the thermostat to the upper coolant hose on Land Rover 3.0L and 5.0L engines. This is a factory-direct replacement part manufactured to the exact specifications of the original equipment.

This aluminum coolant outlet flange addresses a well-documented failure point found in earlier plastic coolant pipe designs. Engineered from high-grade aluminum, this OEM component is built to withstand the elevated heat and pressure demands of supercharged and naturally aspirated engines, delivering a significantly more durable solution than previous-generation plastic pipes.

Key Features:

• Genuine OEM Land Rover part — not aftermarket or remanufactured
• High-grade aluminum construction for superior heat and pressure resistance
• Serves as the upper coolant outlet flange (thermostat to top coolant hose)
• Factory-engineered fit for precise, leak-free installation
• Includes gasket as part of the assembly
• Compatible with 3.0L and 5.0L engine applications

Cross-Reference Part Numbers: LR090630, LR092992, 9W838A504HA

This Genuine Land Rover coolant pipe is the correct OEM solution for restoring proper engine cooling system integrity. It is sold as an individual upper pipe; the companion lower coolant tube (heater outlets to block) is available separately under part number LR186917.