This is a protective Lockout Solenoid cover for Titan Model 10 Surge Brake Actuators. This product does not include mounting bolts, as they will typically already be on your Actuator. Your can remove them, and mount this cover in place to protect your lockout solenoid from future damage, re using the bolts. This is a Zinc Plated Cover, for added corrosion protection. Having this cover can save you both time and money in the long run. A Broken Solenoid will prevent your trailers brakes from working, costing money and time before you can make the repairs to get your trailer in working condition again.  Titan Part number 4836100183.