Heavy Duty Truck Air Bellow Suspension Pressure Sensor Replacement for MAN TGA TGS TGX Iveco | WABCO OEM 4410441040 81274210268 M16x1.5

Product Overview The 4410441040 / 81274210268 / 504255336 Air Bellow and Suspension Pressure Sensor is an industrial-grade pneumatic management component engineered as a premium aftermarket replacement for MAN and Iveco heavy-duty commercial trucks and Electronically Controlled Air Suspension (ECAS) infrastructures. Featuring a standard M16x1.5 thread dimension and a compact 48mm length profile, this sensor screws directly into the chassis air bellows supply line or valve block manifold. By outputting dynamic, highly precise electrical telemetry to the ECAS microprocessor, it ensures microsecond adjustments to chassis levelling, maintains consistent riding height under variable freight loads, and optimizes multi-axle suspension damping performance. Technical Specifications Primary WABCO Cross-Reference Codes: 4410441040, 441 044 104 0, 4410441020, 441 044 102 0 MAN Factory OE Reference Codes: 81274210268, 81.27421-0268, 81274210163, 81.27421-0163, 81274210244, 81.27421-0244 Iveco Fleet OE Reference Codes: 504255336, 98472891 Alternative Market Code: 5058105400N Fitting Thread Geometry: M16 x 1.5 Pitch (Length: 48 mm) Component Type: Inductive/Piezoresistive Fluid Air Suspension Bellow Pressure Switch Sender Condition: Brand New Premium Aftermarket Replacement Vehicle & System Compatibility Matrix This replacement air shock logging probe features original equipment pneumatic calibration parameters and terminal pinning styles, enabling perfect drop-in setups across major European commercial logistics networks: Truck Family & Chassis Series Suspension Lineup & System Application Profiles MAN TG-A / TG-X / TG-S Series Fits premium long-haul highway tractors and heavy multi-axle freight carriers utilizing factory WABCO ECAS intelligent chassis-leveling loops. MAN F2000 / Evolution Fleet Widespread replacement use across legacy heavy transport rigid cargo chassis equipped with pneumatic air springs. Iveco Stralis / EuroStar Series Direct cross-reference fitment for heavy-duty international distribution rigs requiring matching 504255336 pneumatic tracking lines. Commercial Buses & Specialized Coaches Compatible with transit passenger coaches operating under-chassis multi-bellow air suspension levelling blocks. Performance Benefits Restores Chassis Levelling Balance: Directly corrects typical pneumatic system failures such as crooked chassis tilt, sudden suspension collapsing under load, sluggish air bag responses, or erratic “ECAS Leveling Error” dashboard codes. Pneumatic Shock Endurance: Engineered with an upgraded internal diaphragm capable of handling sharp, extreme air pressure surges caused by sudden pothole impacts and severe trailer load dumps. IP67 Corrosion-Proof Shroud: Built with high-strength anti-oxidation metal threads and hermetically sealed polymer headers to lock out under-chassis water spray, grease, mud, and corrosive winter road de-icers. Maintenance Tip: In long-haul logistics fleets, a failing 4410441040 air bellow sensor usually manifests as an un-level chassis ride or the electronic leveling system continuously hunting (pumping up and deflating) without settling down. Sitting under the frame rails near the axles, this sensor is heavily exposed to aggressive road debris, moisture, and fine mechanical grease films. When installing this premium aftermarket replacement, ensure the truck’s pneumatic reservoirs are completely bled and the chassis is safely supported by mechanical safety jack stands. Clean any accumulated road dirt or thread rust out of the valve port, wrap the M16 thread cleanly if a thread sealant patch isn’t pre-applied, and click the terminal clip firmly home to guarantee an air-tight, moisture-proof electronic interface.