Keep warm coolant moving to the heater core with the Dayco heater hose 87813, a molded replacement that drops into the factory routing on the 2007-2012 Mazda CX-7 (L4-2.3L) and the 1999-2002 Mercury Cougar (V6-2.5L). This dual-type hose is pre-formed to follow the original path and carries engine coolant through the heater circuit so the system can warm the cabin.
Over time a heater hose can leak, weep coolant, or soften at the ends. If a failing hose in this position is the cause of a coolant drip, a sweet coolant smell, or weak cabin heat, this Dayco hvac heater hose replaces it. Diagnose the source of any coolant loss before replacing.
Interchange: 16311M · 19074 · 63512 · 11074
This part cross-references / interchanges with the following part numbers:
What vehicles does the Dayco heater hose 87813 fit?
It is a direct-fit replacement for the 2007-2012 Mazda CX-7 (L4-2.3L) and the 1999-2002 Mercury Cougar (V6-2.5L). Check the Buyer's Guide tab to confirm your vehicle.
What is a Dayco hvac heater hose?
It is the molded coolant hose that carries engine coolant through the heater circuit so the HVAC system can warm the cabin. This one is cataloged for the heater-to-pipe / heater-outlet position.
What are the inside diameters and length of this hose?
It has a .59-inch inside diameter at one end and a .69-inch inside diameter at the other, with a 27-inch centerline length.
How do I know if my heater hose needs replacing?
Signs include coolant leaks or drips, a sweet coolant smell, a low coolant level, or weak cabin heat. Diagnose the cause of any coolant loss before replacing the hose.
What part numbers does the Dayco 87813 interchange with?
It replaces the following interchange numbers: 16311M, 19074, 63512, and 11074.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
