Quick Fuel Technology Quick Cool Insulator is built with poly-core material sandwiched between two layers of aluminum to reduce heat, providing cooler fuel for improved performance and throttle response. It is designed for 4150-style flanges and fits Street Demon, Holley, and QFT carburetors.
- Poly-core material between two aluminum layers
- Reduces heat transfer to the carburetor
- Designed for 4150-style flanges
- Fits Street Demon, Holley, and QFT carburetors
- Part number: 300-4013QFT
FAQ
What flange does this insulator fit?
It is designed for 4150-style flanges.
Which carburetors is it compatible with?
It fits Street Demon, Holley, and QFT carburetors.
How does it work?
Poly-core material between two aluminum layers reduces heat transfer for cooler fuel and better throttle response.

