LT1 and LT4 Serpentine Systems now available!! Starting at 3199.00

Thermostat Housings

$79.00
Free Shipping!

Synister Products manufactures Thermostat Housings


We designed these to fit LS, SBC/BBC, and 348/409 Engines.

Our Thermostat Housings feature 360 Degree Adjustable rotation with excellent performance and reliability.  

They are made with the highest quality billet aircraft aluminum T6061-6511. 

We offer a variety of finishes to suit your needs.  Call 866-796-4787 for custom colors.  Please allow an additional two weeks delivery time for this option.


All of our products are 100% Made in America!