J-38609-A
Piston Groove Gauge
Detroit Diesel

This piston groove tool is specifically designed for measuring and creating accurate piston ring grooves in engine pistons, a critical step during piston installation or reconditioning. Properly machined grooves ensure optimal ring seating, which directly influences compression, oil control, and overall engine efficiency. The tool’s precise design allows for consistent, repeatable measurements, minimizing the risk of uneven wear or ring misalignment. Using this tool helps maintain the correct piston-to-wall clearance, preventing blow-by and reducing emissions. Its durable construction withstands heavy use in professional workshops, ensuring long-term accuracy. Accurate piston grooves contribute significantly to engine performance and durability. Source One Parts Center provides this specialized tool to support precise piston servicing and rebuilds in heavy-duty engines.