Replacement 2-Pin Engine Coolant Level Sensor 3572012C1 57755615 for International Navistar Trucks Cummins

Product Overview The 3572012C1 / 57755615 / 5022-11366-06 High-Precision Engine Coolant Liquid Level Sensor is a premium commercial-grade vehicle fluid diagnostic component engineered as a high-precision direct aftermarket replacement for International Navistar heavy-duty line-haul semi-trucks, regional freight tractors, vocational severe-duty utility configurations, and Cummins-powered commercial chassis grids. Positioned securely into the side walls or base blocks of the radiator expansion surge tank, this essential 2-pin conductivity probe transmitter continuously measures anti-freeze absolute fluid density levels. It translates immediate fluid drops into clean, linear low-voltage electronic telemetry for the central Body Control Module (BCM) and dashboard display cluster. Maintaining an active, uncompromised sensory path through this loop is paramount for throwing instantaneous dashboard low-fluid hazard warnings, triggering electronic engine de-rates before critical thermal block warping occurs, and safeguarding fleet machinery from devastating structural cylinder head fractures. Technical Specifications Primary International Navistar OE Reference Numbers: 3572012C1, 2017936C1, 3572012-C1, 2017936-C1 Primary Fleet & Heavy Duty Industry Reference Numbers: Automann 577.55615, 57755615, 577-55615 Interchangeable Companion Factory System Crosses: 50221136601, 50221136606, 5022-11366-06, Dorman 904-7157 Component Type: Heavy-Duty Commercial Truck Radiator Expansion Surge Tank Coolant Fluid Absolute Level Sensor / Diagnostic Probe Transmitter Connection Interface: 2-Pin heavy-duty weather-sealed automotive electrical plug profile with premium internal corrosion-proof contact pins Material Engineering: Anti-scale engineered heavy-duty composite polymer body coupled with high-conductivity stainless steel or premium metallic probe needles Condition: 100% Brand New Premium Aftermarket Replacement Vehicle Fleet, Chassis Platform & Engine Family Cross Compatibility This heavy-duty American commercial-grade, anti-freeze hardened engine level diagnostic sensor features versatile retrocompatible and modern operational application maps across leading freight lines and vocational vehicle lines: Truck Manufacturer & Fleet Chassis Generation System Application & Operational Engine Fitment International Navistar Severe-Duty & Medium Fleets (Models 7400, 7600, 7300, 7500 WorkStar Series) Primary radiator surge plastic tank liquid level profiling and dashboard low-fluid warning wiring. Built to resist heavy mechanical engine block shaking and extreme structural frame stresses under aggressive dump truck, construction site, and vocational municipal cycles. International Navistar Highway & Freight Fleet Classes (ProStar, TranStar, DuraStar 4300/4400, 8500/8600 Series) Expansion tank coolant fluid volume check loops, syncing with central cockpit electronics networks across regional parcel delivery vans, box cargo trucks, and long-haul Class 8 logistics trailers. Cummins High-Displacement Industrial Diesel Architectures (ISX, ISM, ISC Series Electronic Truck Engines) Auxiliary cooling fluid safety network tracking and ECU loop interlock synchronization. Calibrated to withstand persistent exposure to high-temperature glycol surfactants, chemical scale inhibitors, and under-hood heat accumulation spikes. Performance Benefits Cure False Low-Coolant Flashings & Forced Torque De-Rates: Directly replaces oxide-blinded, calcium-crusted, or internally cracked legacy level sensors that trick the vehicle computer into displaying unwarranted low-fluid indicators or activating safety engine shut-down lines. Advanced Corrosion-Proof Needle Metallurgy: Designed with premium chemical-resistant probe contacts to completely avoid scale accumulation, oxidation crusting, and chemical decay from high-temperature anti-freeze surfactants. Heavy-Duty Mechanical Tank Thermal Hardening: Ruggedized solid-molded composite polymer shell survives intense under-hood engine vibrations and relentless pressure shifts inside modern heavy vehicle cooling cells. Weather-Tight Electronic Signal Protection: Molded 2-pin interface includes high-grade internal moisture defense blocks to seal out under-hood oil film accumulation, chemical road spray, atmospheric humidity, and intense high-pressure maintenance bay washes. Maintenance Tip: When installing the replacement International Navistar 3572012C1 / 57755615 coolant level sensor, ensure the heavy truck is parked securely on level ground in a service bay, the parking brake is set firmly, wheels are choked, and the engine has cooled down completely to avoid dangerous scalding hazards from pressurized hot fluid or steam blowouts. Back off the surge tank pressure cap slowly beforehand to bleed any residual pressure lines. Place a small fluid catch tray directly beneath the sensor block on the surge tank to capture any minor fluid weepage during legacy hardware removal. Thoroughly wipe the surrounding plastic tank port area to clear away thick mud crust, grease, or dirt. Depress the wire harness tab carefully to avoid snapping weathered plastic, and unthread the old faulty probe. Inspect the tank port receiver threads cleanly. Hand-thread the new replacement sensor straight into position first to guarantee absolute thread alignment, torque firmly to factory heavy truck specifications using a line wrench strictly on the sensor hex flats (never apply torque via the plastic 2-pin plug head), fill up fluid levels, start the engine to run diagnostic checks, verify cockpit indicator continuity, and check thoroughly for zero thread weeping.