Pontiac V8 Chrome Zinc Straight Up O-Ring Style Water Neck

• Straight-up chrome zinc outlet routes the upper radiator hose cleanly

• O-ring seal and mounting hardware included for straightforward installation

• Fits Pontiac V8 engines across the full range — 326 through 455 CID

• Zinc construction with chrome finish handles coolant system heat and pressure

This straight-up water neck creates the coolant outlet connection between the thermostat housing and upper radiator hose on Pontiac V8 engines, with a chrome finish over zinc construction built to handle coolant system heat and pressure. An O-ring seal is included, along with mounting hardware, for a complete installation.

This water neck is built for the full Pontiac V8 engine family — 326, 347, 350, 370, 389, 400, 421, 428, and 455 CID. Pontiac V8s share a common thermostat housing design across this displacement range, but confirm your specific engine's housing bolt pattern before ordering, since production changes occurred over the engine family's long run.

This outlet is straight-up and does not swivel; hose alignment is fixed at installation.

Engine Applications
Fits Pontiac V8 engines from 326 through 455 CID, covering the full range of displacements used across GTO, Firebird, Trans Am, and other classic Pontiac performance and muscle car applications. Commonly used in restorations, street rods, and custom cooling system builds using a matching thermostat housing bolt pattern.

Installation
Confirm your thermostat housing bolt pattern matches before installing, since Pontiac V8 production spanned several decades and displacement increases. The included O-ring seals against the housing face; because this outlet is fixed rather than swiveling, hose alignment is set by the neck's straight-up angle rather than by rotating it after mounting.

What engines does this water neck fit?
This water neck fits Pontiac V8 engines from 326 through 455 CID, including 326, 347, 350, 370, 389, 400, 421, 428, and 455 CID applications.

Does this water neck swivel?
No — this water neck has a fixed, straight-up outlet and does not swivel. Radiator-hose routing is determined by the outlet position once installed.

Does this include a gasket or O-ring?
This water neck includes an O-ring seal.

Will this fit my GTO, Firebird, or Trans Am?
Yes, on Pontiac-powered applications using a compatible 326–455 CID Pontiac V8 and matching thermostat housing configuration. Verify your specific engine before ordering, especially if the vehicle has been engine-swapped.

Is this suitable for a classic Pontiac restoration?
Yes — the chrome-over-zinc finish and straight-up outlet design provide a traditional appearance suited to classic Pontiac and restoration-style engine bays.