Mastodon Small Block Ford 289 – 351W Thermostat Housing Water Neck

Thermostat housing / water neck for Small Block Ford — fits 289, 302, and 351W. Direct replacement for the factory or worn aftermarket thermostat housing, machined to accept the standard SBF thermostat with proper gasket sealing.

Sized for the Ford Windsor cooling system layout — the inlet/outlet geometry routes cleanly to standard Ford radiator hoses.

Specifications:

• Application: Small Block Ford 221 / 289 / 302 / 351W
• Type: Thermostat housing / water neck (combined)
• Hose connection: Standard SBF radiator hose size
• Includes: Housing (use existing thermostat and gasket, or order separately)