Carb Insert 1in Tall Open

The Carb Insert 1in Tall Open from WEHRS MACHINE is a precision aluminum carburetor spacer insert designed to optimize fuel-air mixture flow and engine performance in high-horsepower applications. This restrictor plate insert sits between the carburetor and intake manifold, leveraging the proven Wehrs Machine spacer system to enhance volumetric efficiency while maintaining consistent engine tuning across varying operating conditions.

Machined from aluminum and finished in natural condition, the 1-inch tall profile integrates seamlessly into intake manifold assemblies. The open design allows unrestricted airflow without additional baffling, making it ideal for naturally aspirated engines where maximum fuel vaporization and homogeneous charge distribution directly influence combustion efficiency and power output. Weighing just 0.46 pounds with compact dimensions (5 x 1.15 x 5.35 inches), this insert requires no special tools or complex installation procedures—a straightforward bolt-on component compatible with Wehrs spacer system configurations.

Engine builders, performance tuners, and street racers choose Wehrs carburetor spacers when targeting consistent horsepower gains in bracket racing, circle track, and road course environments. The 1-inch height allows tuners to fine-tune plenum temperature and mixture velocity without modifying the core induction system. Whether optimizing a fresh engine build or upgrading an existing carburetor setup, this restrictor plate insert provides a validated path to improved responsiveness and reliable power delivery.