Piston Selection
WARNING: This page is about a different car, the 2023 Ford Bronco Sport. However, it is still accessible from the selected car via links, so may be relevant.
For information on Ford Color Coded Illustrations refer to OEM COLOR CODING
Check
NOTE:
Refer to the appropriate Engine article for the specifications.
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NOTE: The cylinder bore must be within the specifications for taper and out-of-round before fitting a piston.
- Measure the cylinder bore in 2 directions.
- Select a piston size based on the cylinder bore.
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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.