DuraWRX DEF Header Analog Hose-Bead for Freightliner/Cummins 6-Gallon Tank, 18" Height from DuraWRX is a direct-fit in-tank assembly engineered to restore reliable Diesel Exhaust Fluid (DEF) management for affected Freightliner applications with Cummins engines and 6-gallon DEF tanks. This header integrates an analog level sensor and associated fittings in a hose-bead style tank interface to replace worn or failed in-tank assemblies that cause inaccurate level readings, failed dosing, and emissions system faulting. The assembly includes a 70μ in-tank filter to protect downstream dosing components, SAE J2044-compliant suction and return fitting diameters (suction: 5/16", return: 3/8"), and coolant inlet/outlet interfaces sized at 3/8" to match factory fluid routing practices. Electrical connection is via an AMP 282106-1 four-pin connector used on the original equipment harness. In practical fleet operations this header addresses the operational problem of incorrect or intermittent DEF level information reaching the engine control module, a common root cause of immobilizing emissions faults and unwanted downtime. Replacing a degraded header with this DuraWRX assembly restores accurate level and temperature feedback to the control system, re-enables proper DEF dosing, and returns the vehicle to normal emissions operation without modification to tank or harness. The hose-bead tank interface and OEM-style fittings minimize installation complexity and reduce pull-and-replace labor time compared with non direct-fit repairs. The built-in particulate filtration helps reduce premature wear of pumps and valves, supporting longer service intervals for the dosing system. For fleets requiring dependable returns-to-service and consistent DEF system function on Freightliner chassis equipped with Cummins engines, this DuraWRX header provides a field-proven, OE pattern replacement option designed to meet the original fit and sensor type expectations.