HJS Exhaust Gas Temperature (EGT) Sensor

HJS Exhaust Gas Temperature Sensors: Emission Expertise You Can Trust

HJS Emission Technology is a name synonymous with precision exhaust aftertreatment. Founded in 1976 and based in Menden, Germany, HJS has established itself internationally through the research, development, and production of exhaust gas aftertreatment systems for petrol and diesel applications. That deep engineering heritage flows directly into their Exhaust Gas Temperature (EGT) Sensors — components that sit at the heart of modern emissions control systems.

Why EGT Sensors Matter in Modern Vehicles

In modern internal combustion engines, knowledge of the exhaust gas temperature is necessary for the management and diagnosis of the exhaust gas aftertreatment system, as well as for the protection of components that may be sensitive to thermal overloads. For diesel vehicles in particular, the EGT sensor is responsible for reading the temperatures of aftertreatment system components such as the inlet DOC, inlet DPF, outlet DPF, inlet SCR, and outlet SCR, sending that information back to the ECM to maintain proper temperatures that control the aftertreatment system and reduce harmful emissions. When an EGT sensor fails or reads inaccurately, the consequences can range from a check engine light to a clogged DPF and compromised emissions compliance.

HJS EGT Sensors: Built Around the Particulate Filter

HJS's EGT sensor lineup is engineered specifically to support diesel particulate filter (DPF) and exhaust aftertreatment systems. Their sensors are positioned at the front of the exhaust system, located before the particulate filter — exactly where accurate temperature data is critical for triggering and managing DPF regeneration cycles. This positioning aligns directly with HJS's broader expertise: HJS specialises in systems for diesel engines, especially for reducing the emissions of soot particles (PM) and nitrogen oxides.

With a wide range of patents for DPF and SCRT (Selective Catalytic Reduction Technology) systems, HJS sets benchmarks globally. Their EGT sensors are designed as integral components within this ecosystem — not generic off-the-shelf parts, but purpose-engineered sensors calibrated to work seamlessly within complete exhaust aftertreatment architectures.

Quality Backed by a Solid Warranty

HJS warrants its products to be free from defects in materials or workmanship for a period of 24 months (24,000 miles). The warranty is granted to the end-user and applies to products purchased, installed, and used for the purposes for which they are originally designed, covering defects arising under normal use. This commitment to standing behind their products is consistent with a brand that has spent decades supplying both OEM and aftermarket customers across Europe and beyond.

These innovative environmental protection technologies can be used either as original equipment or for retrofitting in passenger cars, commercial vehicles, and a wide range of non-road mobile machinery and stationary applications. Whether you're doing a targeted sensor replacement or refreshing a complete DPF system, HJS EGT sensors deliver the accuracy and durability needed to keep your emissions system operating within spec. Browse the full selection of HJS Exhaust Gas Temperature Sensors to find the right fit for your application.