Details

• Brand:

  

  

• SKU:

  W702527-S437

• Positions: Lower, Lower Upper
• Other Names:

  Upper Housing Bolt, Mount Bolt, Bolt

• Description:

  The W702527-S437 is a genuine Ford bolt built on the HB1 base, used to fasten the engine coolant thermostat housing to the engine. Dealer catalogs carry it under the dominant name Engine Coolant Thermostat Housing Bolt in the cooling-system thermostat section, in lower and lower-upper positions, with catalog notes citing 4.0L applications; it is the current service number, listed as a replacement for the earlier W702527-S301. Documented sample applications where this exact service number is cataloged include the Ford E-350, Explorer and Ranger and the Mercury Mountaineer; treat those as representative examples rather than a complete vehicle list, because Ford reuses one housing bolt across related engines and model years and does not publish a single finite fitment chart for it. A thermostat housing bolt clamps the housing and its gasket or seal to the engine so the coolant joint stays sealed and the thermostat is held square in its bore. When one is loose, stretched, corroded or missing, the housing can weep coolant, lose clamp load at the gasket, or let the thermostat seat unevenly. A buyer replacing a thermostat or housing gasket often replaces these bolts at the same time. Because the suffix code denotes a specific thread size, length, grade and finish, confirm fit for your exact vehicle by VIN before ordering rather than relying on the sample applications above.

• Replaces:

  w702527s301

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