EGR & Cooling for the Ford Power Stroke

EGR coolers, EGR delete and upgrade kits, radiators, oil coolers, water pumps, and thermostats that fix the Power Stroke's known cooling weak points.

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Cooling is the Power Stroke's most consequential system, because on the 6.0 and 6.4 the cooling and EGR components fail as a chain rather than one at a time. A plugged oil cooler starves the EGR cooler, the EGR cooler ruptures, and the head gaskets pay for it — which is why owners fix this whole area at once.

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EGR & Cooling for the Power Stroke: what to know before you buy

The diagnostic that matters on a 6.0 is the delta between engine oil temperature and engine coolant temperature under load: a healthy oil cooler keeps them close, and a widening gap means the cooler is plugging. Catching it there is what prevents the rest of the chain.

New coolers, thermostats, coolant filtration kits, and gaskets are Amazon Automotive parts; complete radiators, EGR coolers, and OEM assemblies for older trucks are frequently better sourced used or OEM on eBay Motors.

Fitment by engine

Engine	What's different
7.3L (1994.5–2003)	No EGR system on these trucks, which removes an entire failure category. Cooling work here is the conventional stuff: radiator, thermostat, water pump, hoses, and keeping the coolant chemistry correct.
6.0L (2003–2007)	The engine oil cooler plugs with casting sand and coolant debris, which starves the EGR cooler and cooks it. Coolant filtration, a fresh oil cooler, and a properly-serviced cooling system are the standard defense — usually done alongside head studs if the heads are already off.
6.4L (2008–2010)	Radiators and EGR coolers are both known weak points, and the truck's high heat load makes cooling-system condition a reliability issue rather than a maintenance footnote.
6.7L (2011+)	EGR coolers and the secondary cooling circuit are the service items. Coolant condition and correct fill/bleed procedure matter more than most owners expect on this engine.

Before you buy

On a 6.0, compare oil temperature to coolant temperature under load before buying anything — that gap is the oil cooler's report card.
Replace the oil cooler and EGR cooler as a set on a 6.0; doing one and leaving the other rarely ends well.
Add coolant filtration if you're keeping a 6.0 long-term — it's the cheapest protection in this category.
Use the correct coolant specification and follow the bleed procedure; trapped air causes symptoms that look like component failure.
If the heads are coming off anyway, price head studs and gaskets in the same job.

Go deeper

Related categories

Parts and systems that work together on a Power Stroke.

EGR & Cooling: common questions

Why do 6.0 Power Stroke EGR coolers keep failing?

Usually because the engine oil cooler ahead of them is plugging. The oil cooler and EGR cooler share the cooling circuit; when the oil cooler restricts flow, the EGR cooler runs hot and eventually ruptures. Replacing the EGR cooler without addressing the oil cooler and coolant cleanliness is why owners do the job twice.

Does the 7.3 Power Stroke have an EGR cooler?

No. The 7.3L predates EGR on these trucks, so the whole EGR-cooler failure chain that defines the 6.0 and 6.4 simply doesn't exist. Cooling work on a 7.3 is conventional radiator, thermostat, water pump, and coolant maintenance.

Is a coolant filter kit worth it on a 6.0?

For a truck you intend to keep, yes — it's inexpensive insurance that captures the casting debris and scale that plug oil and EGR coolers in the first place. It doesn't undo existing damage, so pair it with fresh coolant and a healthy oil cooler.