Stanadyne to Showcase Production-Ready Propane Direct-Injection Technology at ACT Expo 2026

New 200-bar fuel system for GM 6.6L engines offers fleets a high-performance, low-carbon path to 2027 emissions compliance with propane autogas.

LAS VEGAS (May 4, 2026) - Stanadyne, a global leader in fuel delivery systems, in collaboration with the Propane Education & Research Council (PERC) and Katech, today announced the transition of its innovative Propane Direct-Injection (DI) technology from prototype to a production-ready solution.

The system, which will be featured in a 2024 Chevrolet Silverado 2500HD at ACT Expo (booth #2231), is targeted for commercial availability in Q4 2027.

Advanced Performance and Efficiency

The Stanadyne DI system utilizes a high-pressure fuel pump and advanced injectors to deliver propane autogas as a liquid at pressures up to 200 bar directly into the combustion chamber.

Integrated into the GM 6.6L V8 engine, the system produces 401 horsepower and 464 lb-ft of torque, maintaining a robust towing capacity of up to 17,370 pounds - setting a new benchmark for performance in the medium-duty sector.

"Our technology has moved beyond the prototype stage to a production-ready solution that demonstrates strong potential for scalable commercialization," said Srinu Gunturu, Global Chief Engineer at Stanadyne. "This system makes clean propulsion practical for medium- and heavy-duty applications as an integral part of a diverse energy strategy."

The Propane Autogas Advantage

Propane autogas is a ready-now energy solution that continues to demonstrate its advantage for fleets seeking to reduce emissions without compromising operational reliability. Key benefits include:

• Immediate Criteria Pollutant Reduction: Propane autogas can reduce NOx emissions by up to 96% compared to diesel in medium-duty engine applications, without disrupting operations.
• Renewable Compatibility: The technology is 100% compatible with renewable propane autogas, a drop-in energy source that works with existing vehicles and infrastructure and has a lower carbon intensity than many other alternatives.
• Lower Total Cost of Ownership: Operators can realize energy source expenses up to 50% lower than diesel and 40% lower than gasoline with propane autogas.
• Domestic Reliability: Because propane autogas is domestically produced, fleets are protected from global market volatility.
• Reliable and Ready Now: Propane autogas is portable, stored on-site, and stable over very long periods, allowing fleets to maintain operations during outages or peak demand.

"The Stanadyne Propane Direct-Injection (DI) technology approaching commercial readiness is great news for fleets where high uptime and cost-control are crucial to operations," said Joel Stutheit, senior manager, autogas business development at PERC. "This opens the door for even more operators to benefit from the low cost and near-zero emissions advantage of propane autogas, joining the over 25 million propane autogas vehicles already in daily service worldwide."

At booth #2231, PERC will showcase propane autogas solutions across on-road transportation and material handling applications, including NEXIO's 7.2L supercharged V8 engine, EnviroCharge Mobile EV Charging, and NextGen Smart Dispenser from Gas Equipment Company.

For more information, visit Propane.com.

To learn more about Stanadyne's fuel systems, visit Stanadyne.com.

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About PERC: The Propane Education & Research Council is a nonprofit that provides leading propane safety and training programs and invests in research and development of new propane-powered technologies. PERC is operated and funded by the propane industry. For more information, visit Propane.com.

About Stanadyne: Stanadyne is a global leader in the design and manufacture of advanced fuel delivery systems for diesel, gasoline, and alternative fuel engines, supporting OEM and aftermarket customers worldwide.