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Compare coolant components listed for 1999–2001 Mustang Cobra projects, including thermostat manifolds, water pump return fittings and heater core adapters.
Review the high-flow thermostat manifold, -08AN water pump return nipple and low-profile -10AN heater core adapter. Confirm the actual connection sizes, engine arrangement and available clearance; appearing in the same collection does not make these fittings interchangeable.
