2016-2019 BMW 7 Series 4.4L Radiator 17118620207

Also known as

Engine Coolant Radiator

Main Radiator

Rad Assembly

Primary Heat Exchanger

Coolant Radiator

Front Cooling Module

What this part does

The radiator operates as the primary heat dissipation component within the vehicle's pressurized liquid cooling system. Positioned vertically behind the front grille assembly and radiator support, it receives superheated coolant exiting the engine block. As this fluid travels through the core's network of flat aluminum tubes, heat transfers to the corrugated cooling fins and is carried away by ambient airflow drawn through by the electric auxiliary fan. When this component degrades, the crimped seals between the aluminum core and the plastic end tanks typically separate, resulting in visible coolant pooling, a distinctive sweet smell under the hood, persistent low coolant dashboard warnings, and critical engine overheating under load.

Fits these vehicles

OEM and interchange numbers

17118620207

17-11-8-620-207

Before you order

BMW utilizes multiple variations of cooling modules for the G11 and G12 chassis depending on whether the vehicle is equipped with the M Sport package, high-speed synchronization, or specific payload capacities. You must match the OEM number exactly to ensure the mounting tabs for the fan shroud and auxiliary coolers align correctly.

It is highly recommended to replace the upper and lower radiator hoses simultaneously, as the internal O-rings and plastic quick-connect collars degrade from heat cycling and rarely seal properly when transferred to a replacement unit. Following installation, the N63 V8 cooling circuit must be bled using the automated electronic water pump bleed sequence to prevent localized hot spots and air pockets in the cylinder heads.