Holley 4500 Series Carburetor Shear Plate - 2-1/8 Inch Bore. Carburetor plates with a built-in shear design help maximize performance on race engines with a large amount of cam overlap by creating a dam under the throttle plates, helping to build low pressure while improving the vacuum signal to the carburetor. The 1/2 Inch tall plates are machined from 6061-T6 aluminum and clear anodized to protect against corrosion.
Note: Standard gaskets will require trimming for proper installation.
