W470589003100
Piston Protrusion Bridge
Detroit Diesel

This piston protrusion measurement bridge is a precision instrument used to verify the correct height of pistons relative to the cylinder head surface. Accurate measurement is essential for ensuring proper piston-to-head clearance, which influences compression ratios and engine efficiency. Incorrect protrusion can lead to issues such as piston slap, head gasket failure, or reduced power output. The tool’s design allows for quick, repeatable measurements, aiding technicians in diagnosing and correcting assembly errors. Maintaining optimal piston protrusion contributes to engine longevity and performance consistency. This instrument is a vital part of any rebuild or maintenance process, helping to uphold strict factory specifications. Source One Parts Center supplies this measurement bridge to support high-quality engine work and reliable heavy-duty vehicle operation.