Aftermarket EGR Coolers from Natrad HDS can Save your Engine

It’s important to know if your EGR cooler is working correctly as an undetected fault could lead to serious engine damage. This can result in a blown head gasket, corrosion of the intake manifold or damage to the turbocharger.

Natrad has a huge range of aftermarket EGR coolers ready to be fitted in your vehicle. Nip into one of our workshops today.

Warning signs of EGR cooler failure can be a gradual loss of coolant with no apparent leaks. Check for white smoke or steam at the exhaust. A sign of extreme high temperatures in the EGR cooler can be “puking” from the overflow reservoir. This is because coolant entering a very hot EGR cooler can boil inside the unit. The sudden expansion of gas creates pressure which will force liquid coolant into the overflow reservoir and leave air pockets in the engine block cooling channels which will prevent effective engine cooling.

Whenever a cooling issue is detected, it is important to have the entire cooling system checked for failures or restrictions. A problem component can produce issues with downstream parts, especially when coolant flow is restricted.

The EGR cooler can fail in 2 main ways -it can get blocked or it can develop a leak.

Blockages will restrict the exhaust flow and also raise the intake temperature because the EGR cooler works like a radiator in reverse with heat from the exhaust gas flow being transferred to the engine coolant. EGR coolers may use a “tube and shell” or a “stacked plate” configuration and may even have more than one coolant loop.

The coolant typically flows to the EGR cooler after it has previously passed through other heat exchangers such as the oil cooler. If these upstream devices are restricted, it can reduce coolant flow to the EGR cooler and cause problems. Blocked EGR coolers may be able to be cleaned and returned to service.

Leaking EGR coolers can be very serious if action is not taken quickly. This can introduce coolant into either the exhaust system or the intake system. Coolant entering the exhaust will be heated to become steam and be expelled. On its own this will not cause much damage. However, as the coolant level in the engine is reduced, the ability of the cooling system to operate effectively becomes compromised and overheating can occur.

Even more serious is when the coolant enters the engine intake, turbocharger and intercooler. This can cause corrosion and lead to premature failure of these major engine components.

Natrad HDS have quality aftermarket EGR coolers to suit a variety of truck models and popular engines including IVECO, DETROIT, CUMMINS, HINO, VOLVO & SCANIA.


As cooling system specialists, Natrad HDS can check your vehicle and identify the best solution for your application and provide the best national warranty support. Find your nearest Natrad HDS store here.