want free jegs gear?

Comment on any of our posts with your expertise and we'll send you a bag of JEGS schwag.

Learn More >

Installation Instructions for 555-51105

Water Restrictor Kit

Designed to restrict the flow of coolant for optimal temperature control and maximum power in RaceOnly Applications. This is achieved by selecting the disc that permits the water/coolant to remain in the block just long enough to absorb the heat and to remain in the radiator just long enough to dissipate the heat before it returns to the block. Used by professional engine builders. Color coded for easy identification. Includes a 5/8” (Gold), 3/4” (Blue) and 1” (Red) I.D. disc. Fits most AMC, Ford & GM V6,V8 engines with a 2-1/8” O.D. thermostat.

Customer q:



No items found.

car specs

social media

exterior modifications
interior modifications
Posted on
May 10, 2018
Instruction Guides

Psst! Want a chance to win FREE SCHWAG? Comment on this post and click here for details on the JEGS Comment Contest >

You Might Also Like

Follow us on Instagram to get notified about new products and discounts

Follow Us