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DMAX of Moraine, Ohio, is a manufacturer of diesel engines for trucks. DMAX, originally announced in December 1998, is a 60-40 joint venture between and operated by General Motors and Isuzu. Diesel engine production started in July 2000. The company's Duramax V8 engine has been extremely successful for GM, raising that company's diesel pickup market share to 30% in 2002, up from approximately 5% in 1999.
The DMAX plant was built on a land grant site adjacent to a GM plant that made the 6.2/6.5 L Diesel V8. Production of that engine began in 1982.
The plant is planning to increase production from 580 engines a day, in 2017, to 700 engines a day.
- Circle L engine – 1.7 L I4 (produced at Isuzu Motors Polska)
- DMAX V6 engine – 3.0 L V6 (produced in Fujisawa, Kanagawa, Japan)
- Duramax V8 engine – 6.6 L V8 (produced at DMAX)
- "DMAX Marks 10-Year Manufacturing Milestone". GM. Retrieved 23 September 2017.
- "Corporate History". www.Isuzu.co.jp. Isuzu Motors. Retrieved 23 September 2017.
- "GM-Isuzu Duramax Diesel Joint Venture At Risk? (22 Dec 2009)". Pickuptrucks.com. Retrieved 23 September 2017.
- Navera, Tristan (11 Apr 2017). "GM, Isuzu hit the gas on expansion of engine production at joint factory". The Dayton Business Journal. Retrieved 23 September 2017.