The Future of Fuel Efficiency.

For nearly 75 years, Thermo King has delivered superior products and performance for its customers. And with Precedent, we’re taking that reputation to an entirely new level, from improved reliability standards to compliance choices that don’t compromise performance. It’s our very best — and it’s meant to help your business save more money across every mile.

Precedent began as a complete blank slate. Innovative strategies were brought to the table. Tried-and-true methods were held to higher standards. New technologies were considered; some didn’t make the cut. And in the end, we arrived at a platform that delivers double-digit fuel savings without the uncertainty of future compliance. Welcome to Precedent.

Thermo King’s breakthrough system delivers double-digit fuel savings, maximum reliability and compliance choices that don’t compromise performance.

Proven Diesel Direct Architecture
Drives optimum efficiencies and double-digit fuel savings while ensuring minimal energy loss when compared to an all-electrical solution.

Common Rail Fuel Injection
Meets all known emissions standards without the need for an expensive after-treatment system.

Advanced Condenser System
Unique microchannel condenser coils more than double the surface area to improve airflow and eliminate “dead spots” across the entire structure.

Comprehensive Support
Every Precedent unit is backed by the Thermo King Dealer Network with over 200 locations across North America.

PRECEDENT S-600 AND S-700

The Precedent S-Series features a >25 horsepower engine with emission control technologies that minimize fuel consumption and deliver lifelong emissions compliance.

Developed to achieve emissions compliance, the Precedent engine is notable for what it does not have: a Diesel Particulate Filter (DPF). Because of the way a transport refrigeration unit (TRU) runs, with its frequent stops/starts, light engine loads and low exhaust temperatures, using a DPF to achieve compliance is problematic. When we also considered the negative impact on engine life and fuel efficiency that a DPF brings, it was clear that a DPF had no place in the Precedent platform.

To control emissions, we chose proven technologies that are ideally suited to TRU operation. The high pressure common rail fuel delivery system controls particulate matter within the cylinder while improving efficiency and performance.

Our “EGR Light” system recirculates a small amount of exhaust back into the combustion chamber in certain load conditions to help control NOX emissions. A unique “fail closed” design assures continued peak engine performance if a failure occurs, ensuring load integrity is maintained. Additionally, the Diesel Oxidation Catalyst (DOC) provides maintenance-free performance for the life of the unit.