1997-2000 BMW 5 Series 2.8 Radiator

Also known as

Rad

Engine Radiator

Coolant Radiator

Cooling Radiator

Heat Exchanger

What this part does

The Radiator sits at the very front of the engine bay, mounted just behind the grille and air conditioning condenser. It acts as the primary heat exchanger for the engine cooling system by cycling hot coolant through a network of finned aluminum tubes, allowing incoming ambient air to strip away the heat before the fluid returns to the engine block. When the Radiator fails, typically due to hairline cracks in the plastic end tanks or physical damage to the core, it causes rapid coolant loss. This leads to immediate engine overheating, which can warp the aluminum cylinder head or blow the head gasket on these inline-six engines if not addressed instantly.

Fits these vehicles

OEM and interchange numbers

17111436060

17111740696

17111702046

1436060

1740696

Before you order

Inspect the upper radiator neck on your old unit before ordering, as this is the most common failure point on the BMW E39 chassis. Be aware that the cooling system must be thoroughly bled of all air pockets during installation to prevent localized overheating. It is highly recommended to replace the plastic expansion tank, thermostat, and radiator hoses at the same time, as they share the same lifespan and thermal stress cycles as the main heat exchanger.