The Bosch Diesel Exhaust Fluid (DEF) Heater, part number F01C600336 is engineered to ensure optimal performance of the DEF system in 2010-2011 Chevrolet Express and GMC Savana 2500, 3500, and 4500 models. This heater maintains the DEF at the ideal temperature, preventing freezing and ensuring efficient operation of the Selective Catalytic Reduction (SCR) system, which is crucial for reducing nitrogen oxide (NOx) emissions. By keeping the DEF at the proper temperature, the heater ensures that the SCR system operates effectively, thereby maintaining compliance with emission standards and supporting the vehicle's overall performance. Bosch, a leading Original Equipment (OE) supplier of diesel fuel systems, manufactures this heater to meet exacting OE test specifications, ensuring it delivers the same performance and reliability as the original part. The heater is designed for easy installation, making it a convenient replacement for the original component. Its robust construction and high-quality materials ensure durability and a long service life, even under demanding operating conditions. By choosing the Bosch DEF Heater, fleet operators can ensure their vehicles' emission systems function optimally, contributing to reduced downtime and maintenance costs. This component is compatible with the following vehicle models: 2010-2011 Chevrolet Express 4500 (4 X 2), 2010-2011 Chevrolet Express 3500 (RWD), 2010-2011 Chevrolet Express 2500 (RWD), 2010-2011 GMC Savana 4500 (4 X 2), 2010-2011 GMC Savana 3500 (RWD), and 2010-2011 GMC Savana 2500 (RWD).