Upgrade your Chevy cooling system with this O ring style thermostat water neck, designed to suit late small block and big block Chevy V8 engines from 1966 to 1975. Made from chrome steel, it offers a durable finish with classic engine bay appeal, while the OEM neck angle helps ensure a proper fit and clean hose alignment.

This water neck includes a 1/2 inch NPT threaded port, making it ideal for adding a temperature sender or accessory fitting where needed. Supplied with the O ring gasket and mounting hardware, it is ready for installation and offers a reliable seal for consistent cooling system performance. It is a practical choice for restorations, street machines, and performance builds.

Features & Benefits

• Fits late small block and big block Chevy V8 engines from 1966 to 1975
• O ring style design helps provide a secure and dependable seal
• 1/2 inch NPT port allows easy fitment of a sender or accessory fitting
• Chrome steel construction delivers strength and a polished appearance
• OEM neck angle supports correct hose routing and engine bay clearance
• Includes O ring gasket and hardware for convenient installation