Choose Options ECM Lock Box for Detroit Diesel Series-60 Engines Aftermarket MSRP: Now: $257.95 - $457.95 Was: ECM Lock Box for Detroit Diesel Series-60 Engines *ECM not included. Anti-Theft Security Armor for Truck Computers (ECM) Compatible with the Following Detroit Diesel Series-60 Engines: 14 L 12.7 L Prevents Access to the Locking Nut for your... MSRP: Now: $257.95 - $457.95 Was: Choose Options