The Edelbrock Heat Insulator Gasket is designed to prevent fuel percolation in Performer Series and Thunder Series AVS carburetors exposed to extreme underwood temperatures. This is a 4-barrel gasket, which is made up of a nitrile rubber composite. It has a 2-hole divided center and is 0. 320 inch in thickness. This gasket comes with extended carburetor studs.
- Designed to prevent fuel percolation
- Thickness is 0. 320″
- 4-barrel gasket
- 2-hole divided center
- Comes with extended carburetor studs





MikeB –
I’ve used this with Edelbrock carbs for years to help keep fuel from evaporating on hot days when hot engines sit for 30 minutes or more. Only issue I’ve had is they tend to stick to the manifold, so can’t always be re-used. This time I smeared some grease on both sides, so we’ll see what happens next time I pull the carb.
Tim O. –
I read about the need to block heat so the fuel wouldn’t preboil. That makes sense to me and I will take some added protection.My reason for buying this was to raise the carb up a bit so the fuel line wasn’t right above or slightly touching the intake manifold. Worked perfectly
soybean –
New carb would get hot and have trouble starting up after a hot 30 min trip during the summer. Installed the bad boy and no problems since.
Jesse A –
I changed my intake and carburetor only to have issues firing up the truck on a warm start. I installed this gasket and its helped but hasn’t fully cured my warm start issues.My truck fires up excellently on a cold start and this gasket has helped on warm starts but hasn’t fully cured my issue. I’ve researched that installing an electric fuel pump might be the final cure as the gas in my carburetor is evaporating with the heat of the new intake — having to engage the mechanical fuel pump by pumping the gas several times on my warm starts to cycle fuel through the system.This is not the gaskets fault or error – just some fine tuning to my particular engine set-up.
Ron –
Edelbrock 9266 Heat Insulator GasketI was having problems with my 1967 Chevelle running rough and/or “stumbling” while accelerating until I added this gasket. I agree with the on line advice other car people have given that this is a VERY NECESSARY accessory for an Edelbrock carburetor. It is worth every penny. If you are running an Edelbrock carburetor or thinking of running one, buy this gasket for your installation. It keeps the carb cooler and helps avoid the gas boiling when you shut down an engine that is at operating temperature. IT IS WELL WORTH THE MONEY!
david downes –
Used to insulate 600 cfm edlebrock from cast steel manifold along with 1 standard gasket next to manifold to protect the 5/16″ thick gasket for reuse. Helped with the hot crank fluding issues.Note: had to drill narrow pattern holes to work with 600 – 650 cfm carb.
MeanGreen –
Didn’t affect temperature of card at all. Not worth the little time to take carb off to put this on. Disappointed
Ally –
I have used several of these. I coat one side with pam spray and they are almost infinitely reusable. They also will cover the spread bore manifold with a square bore carb without the adapters love that!!