One of the first companies of it's kind in the market, Black Cloud Diesel Performance (tm) has been doing business under it's original & only owner, Gary Nilsen, since it's inception back in 2004! Black Cloud Diesel Performance is located in Amherst Junction, Wisconsin. Black Cloud Diesel is a small company in a small town in Central Wisconsin. You will get personal service and technical application and sales assistance from each of us-customers are our priority, not just a number! BLACK CLOUD DIESEL is a quality company committed to providing excellent customer service, while offering you the highest quality Diesel Performance Parts and Diesel Truck Upgrades that protect the longevity of your truck engine, provide heavy duty performance, replacement parts and products that are more efficient for better Fuel Economy and Power. If there's been a problem with your order, CONTACT US BEFORE RETURNING PARTS FOR CORRECT RETURN ADDRESS AND RETURN NUMBER. If you send a return to the office address, you will be charged what it costs us, to ship your core from our office to the manufacturer.