Caterpillar Engine Harness Repair Kits

Failed ECM connectors on Caterpillar 3406E, C10, C12, C15, and C15 ACERT engines cause intermittent sensor readings, data communication errors, and unexpected shutdowns. A complete harness replacement is time-consuming and expensive when only one connector has failed.

Kustom Truck Parts stocks Caterpillar engine harness repair kits designed to isolate the damaged connector and restore the electrical connection with OEM-quality plugs and pre-terminated wires. Each kit is matched to the specific ECM connector on your Caterpillar engine platform, so there is no guesswork during installation.

These kits serve both OEM maintenance and engine conversion applications across Peterbilt and Kenworth chassis. Browse below by engine family, or contact our team with your engine serial number for connector identification.