Description Genuine Jake Brake (Jacobs Vehicle Systems) solenoid, part number 01-024612. This is a 12VDC engine brake solenoid used on Detroit Diesel Series 60 engines (12.7L & 14.0L). Designed to control Jake Brake operation and restore proper engine braking performance. ?? Fitment Detroit Diesel Series 60 12.7L Detroit Diesel Series 60 14.0L? Not compatible with Caterpillar 3406B / 342C Jake housings??? Details Part Number: 01-024612 Voltage: 12VDC Condition: New Old Stock (NOS) – never installed Brand: Genuine Jake Brake / Jacobs Vehicle Systems Includes: Mounting screw package (as shown)? This is OEM Jake Brake hardware, not aftermarket-ensuring proper fit, function, and reliability. Item has been stored in a shop environment. Box may show dirt/shelf wear, but the solenoid itself is unused and in excellent condition.