Mopar Big Block Water Outlet Neck Upgrade Kit – For 318, 383, 340, 440 – 180°F Thermostat & Housing – Rick-O

If you're running a classic Mopar big block—think 318, 383, 340, or 440—and your cooling system could use some love, this upgrade kit from Rick-O is a smart move.

It's a water outlet neck and thermostat housing upgrade.

The kit includes a new housing and a 180-degree Fahrenheit thermostat.

Swapping to a 180-degree stat can help your engine run a little cooler and more consistently, especially if you've done other performance mods.

It's a direct replacement for the factory setup, giving you a clean, fresh start for your cooling system.

If your old housing is rusty or your thermostat is stuck, grab this kit.

It's a simple, affordable upgrade for your Mopar engine's longevity.

New and ready to install.