The DDC6030B is a precision .030 inch brass liner shim engineered for heavy duty engine block repair on Paccar MX-13, Detroit Diesel Series 60, DD15, and DD16 platforms. This liner shim is intended for use after counterboring operations when the original counterbore ledge has been machined or damaged. By inserting this shim, you restore the correct liner protrusion and maintain stability in the liner’s support surface.
As blocks age or undergo corrective machining, the counterbore support surface can become uneven, worn, or cut too deep. The DDC6030B provides a precise, conductive brass shim to fill the material deficit and reestablish proper contact between the liner flange and the counterbore ledge, which is critical to sealing integrity and combustion chamber geometry.
Because uniformity and concentricity across all cylinder bores is essential, using matching thickness shims—such as .030″ DDC6030B—helps maintain consistent liner heights across the engine. This .030″ option is one of several thicknesses offered (e.g. .010″, .020″, .060") to suit various depth adjustments.
Key Features & Benefits
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Thickness: .030 inch brass liner shim for fine adjustment and restoration
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Compatibility: Paccar MX-13, Detroit 60 Series, DD15 and DD16 engine blocks
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Restores proper liner protrusion after machining operations
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Ensures sealing integrity by reestablishing correct liner height
