DC4Z-5J250-E | Genuine Kalmar Ottawa® DEF Sensor Head

Description: A DEF (Diesel Exhaust Fluid) Sensor Head Assembly DC4Z-5J250-E is a critical emissions control component in modern diesel engines equipped with Selective Catalytic Reduction (SCR) systems. It monitors and manages various aspects of the DEF tank and fluid, ensuring that the vehicle meets emissions regulations by properly injecting DEF into the exhaust stream. Part Number: DC4Z-5J250-E, DC4Z5J250E Condition: New Manufacture/Brand: Kalmar Ottawa Specifications For DC4Z-5J250-E: DEF Header Height (IN): 11 DEF Return Fitting Dia. (IN): 5/16 SAE J2044 Coolant Outlet Fitting Dia. (IN): 5/8 Hose Bead Tank Interface: 4.05 Dia. Bore Seal Electrical Connector: Deutsch DT4 (STD) Sensor Type: Digital (canbus) DEF Suction Fitting Dia. (IN): 3/8 SAE J2044 Coolant Inlet Fitting Dia. (IN): 5/8 Hose Bead In-Tank Filter: 40µ Fits DC4Z-5J250-E For various diesel engines, including those from Caterpillar (CAT) and Perkins Purpose of using DC4Z-5J250-E: Function Purpose Level Sensor Detects how much DEF is in the tank Quality Sensor Measures DEF concentration (should be 32.5% urea / 67.5% deionized water) Temperature Sensor Monitors DEF temperature to prevent freezing or overheating Heater Warms DEF in cold weather so it can flow to the injector Filter Prevents debris from entering the DEF injection system Electronic Interface Communicates with the Engine Control Module (ECM) via CAN bus Signs of a Bad DEF Sensor Head DC4Z-5J250-E: DEF level or quality fault codes "Incorrect DEF Quality" warning DEF tank shows full/empty incorrectly Engine derates or restricts speed Emissions system warnings About the Manufacturer – Kalmar Ottawa: Kalmar Ottawa is a leading manufacturer of terminal tractors (also known as yard trucks or spotter trucks), widely used in distribution centers, ports, rail terminals, and industrial facilities. Based in Ottawa, Kansas, the company is known for producing durable, efficient, and operator-friendly vehicles designed for moving trailers quickly and safely within confined yards. As a part of the global Kalmar brand, Kalmar Ottawa combines American-built reliability with advanced automation and emissions-compliant diesel or electric drivetrains.