Plastic carburetor spacers reduce the fuel temperature inside the carburetor by insulating the carb from the hot intake manifold. This results in a denser air/fuel mixutre for more power. Four-hole design increases low-end torque compared to open style spacers.
- Fits 4150 and 4160 series Holley carbs
- 1-3/4" venturi bores
- Gaskets NOT included