Piston Selection

WARNING: This page is about a different car, the 2015 Ford Special Service Police Sedan and 2015 Ford Police Interceptor Sedan. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The cylinder bore must be within the specifications for taper and out-of-round before fitting a piston.

1.

Select a piston size based on the cylinder bore.

Courtesy of FORD MOTOR COMPANY

2.

NOTE: For precision fit, new pistons are divided into 3 categories within each size range based on their relative position within the range. A paint spot or specific size grade on a new piston indicates the position within the size range.

Choose the piston with the correct paint color or specific size grade.
- Refer to the appropriate engine article for the procedure.

Courtesy of FORD MOTOR COMPANY