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MPVI4 Tuning InterfaceIndustry-leading hardware for advanced Duramax ECM tuning and diagnostics
6L L5P Duramax (E42 ECM) now using HP Tuners’ VCM Suite
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✅Full Install Instructions
If you Select 4" or 5" modification will be required
Billet Rocker Arm Valve Bridge Kit | 1998.5 - 2024 Cummins Cummins Hard Parts MPVI4 Tuning InterfaceIndustry-leading hardware forUpgrade the Rocker Arm Valve Bridges in your Cummins with the Performance Diesel Worx Billet Rocker Arm Valve Bridge Set. From the factory, OE rocker arm bridges are only designed to operate under stock output levels. The added stress and load from a modified engine can quickly exceed what the stock rocker arm bridges can handle. The Performance Diesel Worx Billet Rocker Arm Bridge Set is precision CNC machined from billet 4140 chromoly for