Carb Insert 2in Tall 1.00in Diameter

The Wehrs Machine Carb Insert 2in Tall 1.00in Diameter (part number WM302-1.0) is a precision carburetor restrictor plate spacer designed for small-block engine applications that require controlled fuel and air flow management. This product is ideal for engine builders and serious hobbyists who need to comply with intake restriction rules in various racing classes.

Manufactured from durable aluminum with a natural finish, this insert features a precisely machined 1.000-inch diameter bore and a 2-inch tall profile. The tight tolerances ensure consistent throttle response and repeatable air and fuel metering characteristics, which are critical for maintaining performance reliability in regulated racing environments.

This carburetor insert is particularly beneficial for applications in vintage drag racing, street stock categories, and sealed-engine competitions, where compliance with governing body specifications is mandatory. Its lightweight design at 0.89 lbs provides the necessary structural rigidity to maintain bore concentricity under varying engine loads and temperature cycles.