Techsalesllc specializes in heavy duty semi-truck diagnostic tools and off-road diesel engines. All of our items ship from our warehouse in Los Angeles directly to your doorstep. Our selection consists of products for your heavy duty diesel engines, and will allow you to skip the dealer and do the work yourself. While you are on the road or just at home, our diesel diagnostic scanner tools and laptops for your semi trucks or off road diesel engines will save you time and money starting from the first use.