Details

• Brand:

  

  

• SKU:

  4C4Z-8592-AA

• Other Names:

  RH153

• Description:

  This genuine Ford connection hose links the engine oil cooler housing to the EGR cooler coolant inlet on the 6.0L Power Stroke Turbo Diesel V8, routing engine coolant into the EGR cooler shell so exhaust gas heat can be rejected during EGR operation. It fits 2003-2007 F-250, F-350, F-450, and F-550 Super Duty trucks, the 2003-2005 Excursion, and the 2004-2010 E-350 and E-450 Super Duty vans, all with the 6.0L diesel. Commonly nicknamed the little blue coolant hose by Power Stroke owners, this bonded rubber-to-fitting hose is a well-known wear item: the molded ends crack, weep, or pop loose from the fitting under boost and coolant pressure pulses, leading to steady coolant loss, low coolant warnings, and eventual overheating if left unaddressed. Because the hose sits low under the intake manifold near the EGR cooler and oil cooler housing, a slow leak here is often mistaken for a head gasket or EGR cooler failure until the hose itself is inspected closely. Replacement is routine during EGR cooler service, oil cooler service, and head gasket jobs, since the hose must be disconnected to access those components anyway, and technicians frequently install a fresh hose at the same time to avoid a comeback leak. Motorcraft offers a direct cross-reference for this position, and the genuine Ford hose matches the original routing, bend angles, and fitting profile so it seats correctly without stretching or kinking. This is not a generic radiator hose; it is a specific oil-cooler-to-EGR-cooler coolant connector positioned in the engine's high-heat area, so use the exact genuine part rather than substituting a universal-fit hose. Inspect the mating hose clamps and fitting O-rings when replacing this hose and renew any that show hardening or cracking to keep the cooling system sealed under normal operating pressure.

• Replaces:

  4C4Z9B321AA

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