ClearTech™ System

Mack ClearTech™ SCR incorporates selective catalytic reduction (SCR) technology to create clean-running and fuel-efficient engines that drop emissions, not performance.

  • Reduces NOx emissions to near-zero
  • Meets strict EPA standards
  • Compact design for easy integration
  • Improves fuel economy by up to 5%

  • DEF Tank

    Convenient design

    On the driver side of the truck, the diesel exhaust fluid (DEF) tank is tucked between the cab steps and the fuel tank to allow for easy integration without altering the cab or chassis. This placement is also convenient for refilling operations.

    • DPF Filter

      Minimal regen

      The catalyzed design of our diesel particulate filter (DPF) system allows the use of passive exhaust heat to oxidize the collected soot, virtually eliminating the need for active (diesel fuel supported) DPF regeneration, in highway and most vocational applications.

      • DEF Injection

        Cleaning up the streets

        DEF is directly injected into the engine’s hot exhaust gas stream where it vaporizes immediately in the exhaust stream and, through catalytic reaction, reduces nitrogen emissions (NOx) into harmless nitrogen (N2) and simple water vapor (H2O).

        • After-Treatment Control Module (ACM)

          Looking after your truck and the planet

          The ClearTech™ system is constantly monitored by V-MAC® IV via the ACM, which directly controls the flow or dosing rate of the DEF for industry-leading fuel economy and the reduction of emissions—allowing for EPA certification.

          • Complete Integration

            Mack integrated the after-treatment process with MP™ engines, transmissions and axles for increased efficiency and great power and performance.

          • Less Fuel, More Profits

            ClearTech™ technology has been proven to improve fuel economy by up to 5% by better managing passive exhaust heat levels that dramatically reduce the amount of active regeneration events that consume expensive diesel fuel.

          • Assembled in the USA

            We take pride in being homegrown. All Mack engines, transmissions and drivelines are assembled in Hagerstown, MD USA.

          • Maintenance Intervals

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            Normal Duty

            Greater than 6 mpg Less than 39L/100km

            Heavy Duty

            Greater than 5 mpg Less than 50L/100km

            Severe Duty

            Less than 5 mpg Greater than 50L/100km

            Diesel Particle Filter (DPF) - Clean

            Miles

            400,000

            250,000

            Km

            650,000

            400,000

            Hours

            10,000

            4,500

            Diesel Particle Filter (DPF) Ignition Electrode and Nozzle

            Miles

            150,000

            Km

            240,000

            Hours

            4,500

            Aftertreatment Hydrocarbon Injector (AHI)

            MY 2011 to 2012 (April) clean AHI nozzle.

            MY 2012 (May) and newer replace AHI nozzle and data reset.

            Miles

            150,000

            Km

            240,000

            Hours

            4,500

            DEF, Pump and Tank Filler Neck Filter

            Drain DEF tank, replace DEF pump main filter, clean DEF tank neck filter.

            Miles

            150,000

            Km

            240,000

            Hours

            4,500

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