The M50166 Counterbore Shim Cutting Tool is a precision machining tool designed specifically for Detroit Diesel 15 & 16 series engines (DD15 / DD16). It’s used to restore or cut the upper deck or liner counterbore ledge so that liner shims can be installed properly. This complete tool includes the cutter plate and cutting bit.
Over time or due to wear, the counterbore that supports the liner flange may become worn, corroded, or damaged. The M50166 ensures that the surface is brought back to specification, allowing for consistent liner protrusion and proper sealing with liner shims.
This tool is essential for diesel engine rebuilders and machine shops that work on Detroit Diesel DD series engines, providing reliable accuracy and service repeatability.
Key Features & Benefits
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Purpose-built for Detroit Diesel DD15 / DD16 engine counterbore repair
-
Includes the cutter plate and cutting bit for full operation
-
Restores the upper counterbore ledge to run true and flat, enabling proper liner shim usage
-
Helps maintain correct liner protrusion and sealing geometry
-
Reduces risk of engine leaks or liner misalignment, and avoids discarding blocks due to damaged deck surfaces
Replacement Cutter M50167-3
Heavy item not elgible for free freight.
The M50166 Counterbore Shim Cutting Tool is a precision machining tool designed specifically for Detroit Diesel 15 & 16 series engines (DD15 / DD16). It’s used to restore or cut the upper deck or liner counterbore ledge so that liner shims can be installed properly. This complete tool includes the cutter plate and cutting bit.
Over time or due to wear, the counterbore that supports the liner flange may become worn, corroded, or damaged. The M50166 ensures that the surface is brought back to specification, allowing for consistent liner protrusion and proper sealing with liner shims.
This tool is essential for diesel engine rebuilders and machine shops that work on Detroit Diesel DD series engines, providing reliable accuracy and service repeatability.
Key Features & Benefits
-
Purpose-built for Detroit Diesel DD15 / DD16 engine counterbore repair
-
Includes the cutter plate and cutting bit for full operation
-
Restores the upper counterbore ledge to run true and flat, enabling proper liner shim usage
-
Helps maintain correct liner protrusion and sealing geometry
-
Reduces risk of engine leaks or liner misalignment, and avoids discarding blocks due to damaged deck surfaces
Replacement Cutter M50167-3
