Welcome to Best Reman Engines
We Ship Worldwide!
US Engine Production has been a trusted provider of new and remanufactured high quality engines at competitive prices for over 35 years. USEP produces over 5500 diesel and gas engines each year in our 180,000 sq. ft. production facility in Vassar, MI. We offer a flexible core return policy that allows up to 30 days to return your core, and we pay the return freight. Remanufactured vs. Used or Rebuilt
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USEP Remanufactured Engines meet or exceed the specifications of the original vehicle manufacturers, and are covered by our one-year, unlimited-mileage warranty. The result is an engine that is as close to brand new as possible, at a fraction of the cost. Learn more about us and our process

Shop By Vehicle

(Select your vehicle for the best product fit)









A Standard Best Reman® Long Block
GM Duramax

GM Best Reman Engine

LONG BLOCKS OR DROP IN SOLUTIONS IN STOCK, ON SALE AND WHOLESALE

LB7,LLY,LBZ,LMM,LMM,LGH

  • EXPERTLY RE-MANUFACTURED
  • IN STOCK, READY TO SHIP
  • FLEXIBLE CORE RETURN POLICY
  • FAST AND SECURE DELIVERY
  • BEST VALUE, BEST QUALITY
  • ONE YEAR MANUFACTURER WARRANTY
 
Prop 65 Warning
The State of California requires that this warning to be posted for California residents purchasing products.
WARNING: Products may contain one or more chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.