Cummins 3941140 Rocker Lever Support

The Cummins 3941140 rocker lever support is a critical valve train component engineered to maintain precise rocker arm geometry and shaft alignment within the cylinder head. Manufactured via forging process from high-strength alloy steel, it provides the structural rigidity required for high-pressure common rail and mechanical injection Cummins diesel engines. This support bracket interfaces directly with the rocker arm shaft and cylinder head casting, facilitating controlled valve actuation timing. It is designed for service in Tier 3 emissions platforms including the 8.9 liter ISC, ISL, QSL, and QSC engine families, as well as 6.7 liter ISB and QSB series, 8.3 liter 6C and QSC variants, and legacy 14 liter N14 and NT855 platforms. The component features a corrosion-resistant surface finish to withstand thermal cycling and exposure to engine lubricants.