Motion has had numerous reports over the past few years of folks running factory LS heads and having issues where a pressurized cooling system, a backfire, or over boost has allowed the frost plugs to push out. This can create a dangerous scenario where water dumps out and gets on your tires.
The New Motion LS Frost Plug Brackets were made to retain these frost plugs in case of a scenario where they are possibly going to push out. While this does prevent engine damage vs. not having them, the goal is to retain the frost plugs to the best of their ability to hopefully keep water off of the race surface and off of your tires.
4 Brackets (one for each corner)
Want to learn more about why these are necessary or how they work? Watch this video!
So first time to the track and it blow the freezer plug out of the head. Found this product and it worked great. I was only able to use 3 of them because there is no room do to alt/ps bracket mounts to the head.
Great products at a great price!
They fit perfectly hardware included and they look good to thanks motion
I unfortunately had one of my expansion plugs pop out on my turbo 5.3... my holley monitors coolant pressure and it happened under 25 psi. Since installing this part I've had no more problems!