Sensor Harnesses

Kustom Truck Parts provides high-quality OEM Caterpillar Engine Sensor Harnesses as precise, serial number-specific replacements for Caterpillar 3406E and C15 (including C16) engines. These harnesses restore full sensor connectivity when the original is damaged due to electrical issues, wear, age, or when sourcing a used/reseller engine without an included sensor harness—common scenarios in heavy-duty truck maintenance, rebuilds, or engine swaps.

Built to exact OEM specifications using durable, high-quality materials, each harness ensures reliable, accurate data transmission from the ECM to critical sensors, supporting optimal engine performance, fuel efficiency, diagnostics, and trouble-free operation in demanding applications. They feature plug-and-play design with necessary plugs, backshells, injector harness connectors, and branches to key sensors such as fuel temperature, intake manifold air temperature, boost pressure, engine oil pressure, atmospheric pressure, timing probe, primary/secondary engine speed/timing, and coolant temperature.

Restore reliability and enhance the performance on your Caterpillar 3406E or C15 engine with Kustom Truck Parts' precision-engineered OEM sensor harnesses—crafted for durability and seamless integration. Browse our Sensor Harnesses collection to find the perfect match for your engine configuration.