Cummins ISX12, ISX15, X15 - Control valve set for injector

Because every drop of fuel counts, this Control Valve Kit is essential when you notice increased injector return flow, rough idle, or a drop in engine responsiveness under load. Excessive return means the injector is spilling more fuel than it sprays, signaling that the control valve is worn or stuck open. This leads to poor fuel economy, misfires, and inconsistent engine performance. Installing this kit restores precise fuel control, ensuring efficient combustion, smooth throttle response, and dependable haul when it matters most.

Applications:
This kit is compatible with Cummins ISX12, ISX15, and X15 diesel engines, widely used in U.S. heavy-duty trucks, vocational applications, and construction machinery. It's perfectly suited for preventive maintenance or full injector rebuilds, especially in engines displaying signs of increased fuel return and reduced injection precision.

OEM Numbers and Replacements:
This kit matches Cummins OEM control val­ve references including 6561869, which covers older part numbers 2836554 and 3770742. It is also compatible with control valve replacements referenced as 4036195, 4037440, 4039813, 4040589, and 4046304.

Kit Includes:
One control valve assembly and associated seals designed specifically for Cummins ISX injector models (ISX12, ISX15, or X15), engineered to restore proper injector flow control and enhance long-term engine performance.