null

Our phones will be off Thursday, May 30 and Friday, May 31 while part of our team is at UCC and others attend off-site training.

We’re committed to continuing education and staying connected to the industry.
For support, please email support@merchant-automotive.com.

Cart

Merchant Automotive

About Merchant Automotive Duramax Engine Products

Merchant Automotive has become the largest Duramax parts supplier, manufacturer, and service center in the world. We are continuously innovating and working to make sure our customers are purchasing the best products and receiving the best service. Merchant Automotive offers a variety of Duramax engine parts including Allison transmission parts, filters, fluids, tools, cooling systems, performance parts, transfer cases, and much more for LLY, LB7, LBZ, LMM, LML, L5P, LGH, and LWN Duramax Engines.