Remanufactured 173522 Mack E7 / EM7 12.0L BorgWarner S300A113 Turbocharger

The 173522 Turbocharger is a purpose-matched BorgWarner S300A113 assembly for Mack E7 12.0L, Mack EM7 12.0L applications matching the S300 family. It is built around the exact compressor, turbine, housing, and control specification associated with part number 173522, so fitment should be confirmed from the engine serial number and original turbo tag rather than by engine family alone.

The BorgWarner S300A113 is a fixed-geometry turbocharger used on Mack E7 and EM7 applications. Its wheel and housing combination is selected for dependable low-to-midrange response, strong highway airflow, and durable operation in vocational and fleet service. Correct Mack engine rating, housing orientation, and oil-line condition should be confirmed before replacement.

This listing is supplied as the turbocharger configuration shown. Correct installation requires clean oil feed and drain paths, a sealed charge-air and exhaust system, proper air filtration, and confirmation that the original failure did not leave debris or contamination in the engine system.

Turbo Centre remanufacturing begins with complete disassembly and thorough cleaning so every critical surface can be inspected. Worn bearings, seals, and service components are replaced; shaft, wheel, housing, and vane-system condition are measured; the rotating assembly is balanced; and the completed turbo is checked for smooth operation, oil sealing, and correct control movement before shipment. This process restores the unit as a complete engineered assembly rather than simply replacing the visibly damaged component.