Products Carried by Monroe Motor Products

Vehicle emissions control is the study of reducing the motor vehicle emissions—emissions produced by motor vehicles, especially internal combustion engines.

Denso Oxygen & Air Fuel Ratio Sensors

denso ap web logo

DENSO's light duty oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to monitor the air fuel mixture under idle, moderate acceleration and cruise conditions. Under heavy acceleration the oxygen sensor goes into "open loop," which basically means that the engine management computer system ignores the oxygen sensor. Oxygen sensors have a smaller range of limits in detecting and adjusting the difference from an optimum air/fuel ratio.

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Spectra Filler Necks

filler neck

  • Industry leading coverage for early and late model vehicle applications
  • Spectra Premium remains miles ahead of the competition
  • Dual coated for enhanced corrosion protection
  • Built to meet or exceeds manufacturer's specifications
  • 100% tested
  • Perfect fit guarantee
  • Continuous development
  • One year warranty

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Spectra Fuel Pump Assemblies


  • Exact fit for easy installation 
  • Meets or exceeds OE manufacturer’s specifications
  • Utilizes a high strength, POM plastic (Polyoxymethylene) to prevent tubes from breaking.
  • Product comes with wiring harness and installation hardware where necessary
  • Precision tested fuel level sensor ensures vehicle’s fuel gauge will provide an accurate reading at any fuel level
  • Includes fuel strainer for smoother installation process and ensures a clean fuel system upon replacement
  • Improved connectors to eliminate excessive electrical resistance and provide better heat dissipation compared to OE
  • Fuel level sensor utilizes palladium silver alloy for increase durability and better resistance agaisnt bad fuel
  • High flow pumps utilize carbon commutators which increases durability and generates less heat, equating to a longer lasting fuel pump
  • Failure to clean vehicles fuel tank, install a new fuel filter and strainer will void product warranty
  • 100% reliability tested for: voltage, amperage, resistance, pressure and volume
  • Lifetime warranty
  • Failure to clean vehicles fuel tank, install a new fuel filter and strainer will void product warranty

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Spectra Fuel Tanks


  • Exact fit for easy installation
  • Factory leak tested
  • Meets or exceeds manufacturer's specifications
  • Most extensive coverage in the aftermarket
  • O.E.M. approved ni terne steel
  • Corrosion resistant
  • Precision engineered and tooled under OE specifications
  • All models are validated for fit, form, and function before released into the market
  • Manufactured under ISO 9001 / TS 16949 quality system
  • 100% tested
  • Transit tested packaging
  • Perfect fit guarantee
  • Product liability insurance
  • Three year warranty
    (for use with gasoline containing up to 20% ethanol (E20) and diesel containing up to 5% biodiesel (B5))

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