Let's Fix Your Diesel Today!

Call Now  715-254-2307

Owner, Gary Nilsen, will answer your diesel parts question when you call.


Nilsen Corp/Black Cloud Diesel
Gary Nilsen Owner/President
PO Box 36
Amherst Junction, WI 


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.

Black Cloud Diesel is a small company in a small town in Central Wisconsin.  You will get personal service from each of us-customers are our priority, not just a number!  Click here to see what other customers are saying about us!

If you want to speak to someone about a part you need, or have any questions about ordering please call us at 800-USA(872)-1944 / 715-254-2307.

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.

If you order using a credit card, you will see NilsenCorp/Black Cloud Diesel on your statement.

If you receive a core refund by check, you will see NilsenCorp on the check.

If you need assistance with your order please give us a call at 800-872-1944 and we will be glad to help!

Our business hours are at least 9AM-5PM CST Monday-Friday, but someone is here more than that to help you!

Orders placed after 2pm CST may be processed the next business day. 


Phone: 715-254-2307


Gary Nilsen - Owner/President - Sales, Tech Support, Graphics

Marge  - Sales Office Manager

Deidre  - Accounts Payable

Web Design and Graphics by Morgan Brady

*Small town, USA!