Cummins stock gets S29 mining engine aimed at late 2027

Cummins Inc. unveiled its new S29 mining engine on November 10, 2026, at the Chongqing Cummins Engine Plant in China. The company presented the product as a new platform for large mining and industrial machines, adding a portfolio development story alongside the recent focus on quarterly profitability and the 2026 revenue outlook. The announcement was published in a Cummins investor release.

Engine targets heavy mining equipment

The clean-sheet 29-liter S29 is designed for 90- to 120-ton haul trucks and 150- to 220-ton excavators. Cummins also lists surface miners, bulldozers, wheel loaders and dewatering pumps as potential applications, broadening the addressable equipment range beyond the initial truck and excavator focus.

The engine is planned to deliver up to 1,300 horsepower at 2,100 revolutions per minute. Cummins says current development targets call for a best-point brake-specific fuel consumption of 180 grams per kilowatt-hour, a specification aimed at improving operating economics for mining customers. These figures remain development targets rather than reported production results.

Alternative fuels remain part of design

At launch, the S29 is planned to support diesel, unblended paraffinic fuels such as HVO and biodiesel blends up to B50. Cummins is also designing the platform to accommodate potential natural-gas, hydrogen or dual-fuel configurations. The company said the engine is intended for regions requiring China Stage III, equivalent to EPA Tier 2, as well as non-certified emissions configurations.

The planned operating envelope includes altitudes of up to 3,000 meters without derating and cold starts at temperatures as low as minus 25 degrees Celsius without auxiliary preheating. Those specifications target remote and demanding mining environments, where uptime and fuel efficiency can influence total ownership costs.

Commercial timing comes next

Cummins plans to make the S29 available globally in late 2027. The next visible product milestone is bauma CHINA in Shanghai from November 23 to 27, where customers can see the engine at the company's booth.

For investors, the announcement points to a longer-cycle opportunity in Power Systems rather than an immediate earnings contribution. The commercial case will depend on certification, customer adoption, production timing and the company's ability to convert the development targets into field performance. Cummins Vice President and Power Systems President Jenny Bush said the platform is intended to combine fuel economy, reliability and power density.

Cummins stock traded at 413.45 euros on Lang & Schwarz at 12:41 CET on Friday, November 13, 2026.

The broader US equity market remains the relevant market backdrop for Cummins investors; see Current S&P 500 market reports.

Further product execution, certification progress and the customer response at bauma CHINA are the next milestones. See More news and analyses on Cummins stock.