When your truck's door lock cylinder goes bad, replace it with the TODCO 69011 Best Cylinder (less core). TODCO has been making truck doors and ramps since 1957, which is why we carry truck parts by TODCO for your commercial truck needs. Age and constant use of your door lock cylinder will eventually cause the alignment between the cylinder and the door lock mechanism on your truck to fail. That's when you need a replacement that will allow you to insert and turn the key to access your vehicle. We sell TODCO truck lock assemblies, too. Enjoy low prices on all TODCO truck parts to keep your truck and loading doors on your truck in good working order.