Cummins Inc. (NYSE: CMI) announced today that the QSK Series engines for land-based drilling will meet the U.S. Environmental Protection Agency (EPA) Tier 4 Final regulation using next-generation Selective Catalytic Reduction (SCR) aftertreatment. The Cummins Tier 4 Final drilling solution will meet or exceed the same uptime, reliability and durability that customers are currently experiencing with Tier 2 product.

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