The baffle plate is often rusted out and should be replaced whenever rebuilding the water pump. There were two different sizes of baffle plates. This plate is the smaller one and has an outside diameter (OD) of 3.2475". AF-188L has an OD of 3.31". Both plates have an inside diameter of 1.750". Compare to your original baffle plate or water pump housing. The plate must fit tightly into the recess in the pump housing.
This part fits most 1926 1927 1928 Chevrolet Cars and Trucks.; exceptions may apply. Please read the complete description to see if this part fits your specific vehicle and application.
This product can expose you to a chemical, which is known to the State of California to cause cancer or reproductive harm.
For more information go to www.P65Warnings.ca.gov