Our Values
Diesel Emissions Service (DES) began its operations in 2006 as the emissions division of parent company North State Truck Equipment, Inc., which has been serving the heavy-duty truck market since 1978. DES was established to help California businesses meet and exceed the strict CARB and EPA emissions regulations placed on diesel trucks. Since 2006, DES has sold and/or installed over 15,000 emission control devices and is now an industry leader in diesel emissions on the west coast, and throughout the U.S. and Canada.
DES manufactures DPF (diesel particulate filter) equipment and accessories, we sell and distribute other popular industry DPFs and accessories, and we clean, service, and retrofit DPF filters. In 2014, DES began manufacturing DPF cleaning equipment under the Filtertherm® brand as an industry response to outdated cleaning technology. In 2016, DES launched its Redline Emissions Products® brand to cover the DPF equipment needs for the light, medium, and heavy-duty diesel markets. We offer DPFs, gaskets, clamps, weld bungs, CACs (charge air coolers), sensors, brackets, guards, and custom mounting kits. We have our own AMADA stamping press with a complete fabrication facility, and we have a UL-certified electrical control panel shop.
DES has one of the largest replacement OEM filter inventories in North America and has begun distributing in both Canada and Australia. We have locations across the west coast and we are growing our nationwide Redline Dealer Network for aftertreatment parts and cleaning equipment.
Leadership Team
Steve Hoke grew up working in his family’s repair business since his teens. Steve has been involved in the diesel engine rebuilding industry since early 2000. In 2006, with a vision to help California businesses implement CARB-regulated diesel upgrades, Steve started a subsidiary called Diesel Emissions Service (DES) – specializing in the sales and service of diesel particulate filters on pre-2007 diesel engines. Since the start of this division, DES has become an industry leader, bringing aftermarket technologies and innovations to the market.
Steve then set his sights on developing the industry’s first DPF oven that was more than just a modified kiln. The Filtertherm® was created in 2014 and has since expanded to offer a full line of DPF cleaning equipment. Extending his reach further into the market, Steve established Redline Emissions Products® in 2016, which offers one of the largest replacement OEM diesel particulate filter inventories in North America.
Steve, as President and CEO, continues to lead the company on a path of growth that establishes DES as the premier source for parts and service in the diesel emissions industry.
Casey Hoke has been a part of the family business his entire life. Learning early on the value of hard work and cooperation modeled by his parents, and grand parents as they built the business into what it is today. Over the years he has worked in several departments including shipping, parts sales, inventory management, and operations. The experience gained from engaging in the many different aspects here at DES has provided Casey with understanding of how our operations work, and a vision for what can be done to improve them.
Casey has a degree in Business Administration and uses this along with his 7 years at DES to help provide insight and big picture ideas for the progression of our business. In an industry that is always evolving, it is vital to stay ahead of the curve, which is an important goal of our company and brands.
Casey is currently the Vice President of DES.
