Includes new thermostat for improved engine temperature control
Comes with a high-quality gasket for secure installation
Supplied with both 16mm and 19mm restrictor plates for flexible tuning
Direct-fit design simplifies installation for Gen 3 Hemi vehicles
Aftermarket kit offers a cost-effective alternative to OEM parts
Summarized by Shop
This is a fix for the problematic thermostats that often fail shortly after install.
We supply a Mahle gasket, and a two plates, a 16mm and 19mm restrictor. Not recommended for cold climate vehicles.
Kit Contents
1 thermostat, 1 gasket, 2 restrictor plates (16mm and 19mm)
Material
Plastic, Rubber
Color
Multicolor, Purple, Red
Pattern
Solid
Condition
New
Manufacturer Type
Aftermarket
Summarized by Shop
5.0
4 ratings
5
4
3
2
1
I kept having 180 degree thermostat issues
Kept having 180 degree thermostat issues. FRP Recommended I try the thermostat bypass plate kit. it’s working great. No more thermostat issues!
A
Adepace · June 25, 2026
Temps are more consistent than a themostat,also bleeding off air in system was faster. 16mm coolant temps stay around 175. Simple and fail proof
D
David · May 7, 2026
Always great to do business with FRP. Great products , quick shipping, no issues.