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Meet the indisputable leader of the subcompact segment: Smart. Since the introduction of the first Smart in 1998, the definition of what car is has drastically changed. Unlike other cars of the era, Smart represented the new way of thinking: not the never-ending highways and mighty gas-guzzling engines, but rather rational fuel consumption, maneuverability, and the ability to park where others give up. That might sound contradictory but Smart is designed for people who thrive for freedom, unrestrained by overcrowded city streets or outdated ‘the bigger the better’ approach.

Emission control parts are designed to reduce air pollution. First systems appeared in the 1950, when vehicle emissions were considered to be a major cause of air pollution. Have that frustrating “Check Engine” light popped up? Don’t panic and just have your emission control system checked. We have everything to keep your Smart Car's engine running efficiently and your fuel bills lower than ever. Our shop offers a great variety of Smart Car emission control parts. Choose among time-tested brand names like Bosch, Accel, Genuine, NTK, or Denso and check which of the replacement parts are available for your Smart model.

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    • (2 reviews)
      # sp1743
      Premium Oxygen Sensor by Bosch®. A worn-out oxygen sensor can cause engine performance problems and shorten the life of the catalytic converter. Tune-up your vehicle with an Oxygen Sensor from Bosch that is equally efficient in...
      Improves gas mileageBoosts engine performance
      $15.87 - $293.22
    • (1 review)
      # sp5915
      Wideband Oxygen Sensor by Bosch®. This sensor utilizes a sophisticated sensing element enabling it to produce a precise output in proportion to the air/fuel ratio. The A/F sensor measures exhaust gas oxygen accurately from as rich...
      Detects the exact amount of unburned fuel in the exhaust streamOE connectors and OE-style harness for continuous wire from connector to sensor
      $52.01 - $292.05
    • (0 reviews)
      # sp13448
      Universal Fit Oxygen Sensor by Bosch®. Properly functioning oxygen sensors are important when it comes to your vehicle's fuel efficiency and reducing harmful exhaust emissions. That's why checking for, and possibly replacing, a...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $16.80 - $65.89
    • (9 reviews)
      # sp4673
      Oxygen Sensor by Denso®. 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...
      Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants
      $15.55 - $506.53
    • (0 reviews)
      # sp5348
      Oxygen Sensor by Spectra Premium®. To ensure your vehicle has optimal performance and fuel economy while producing minimal emissions replace a defective O2 sensor with one backed by the aftermarket’s most rigorous testing...
      Increase vehicle fuel economy and engine performance while decreasing vehicle exhaust emissions100% performance tested to meet vehicle requirements
      $16.82 - $262.25
    • (10 reviews)
      # sp5156
      Replacement Oxygen Sensor by NTK®. This product is designed to improve engine efficiency and fuel mileage, while reducing emissions and extending catalyst life. The oxygen sensor is made of premium quality material and extensively...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $17.83 - $233.59
    • (12 reviews)
      # sp4410
      Exhaust Hanger by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker accessories, you...
      $1.32 - $48.20
    • (12 reviews)
      # sp4411
      Exhaust Rubber Insulator by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker...
      $1.32 - $48.20
    • (0 reviews)
      # sp17231
      304 SS Dual Center Section Pipe, 3" by Stainless Works®. Tubing Diameter: 3". Connection Point: Factory Connect. Crossover Style: X-Pipe. CARB Compliant: Yes. This superior product is made from high-grade stainless steel to ensure...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $42.30 - $670.50
    • (0 reviews)
      # 138951677
      Smart Car Fortwo 2008, Oxygen Sensor by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose...
      Makes installation quick and easyOptimal OE-style fit and quality
      $98.16 - $174.60
    • (0 reviews)
      # 138951684
      Smart Car Fortwo 2013, Oxygen Sensor by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose...
      Makes installation quick and easyOptimal OE-style fit and quality
      $98.16 - $174.60
    • (0 reviews)
      # 139371712
      Universal O2 Sensor by Eastern®. Hex Nut Size: 22mm. Thread 1 Size: 18mm X 1.5mm SP. If you need a quality Oxygen Sensor because your factory part is damaged or rusted, Eastern Catalytic has the part you need. Constructed from OE...
      Made of solid materialsOffered in the widest range of configurations
      $29.52 - $29.95
    • (0 reviews)
      # 139371714
      Universal O2 Sensor with Connector by Eastern®. If you need a quality cowbell connector because your factory part is damaged or rusted, Eastern Catalytic has the part you need. Constructed from OE spec materials, this product...
      Made of solid materialsOffered in the widest range of configurations
      $30.25 - $48.60
    • (1 review)
      # 100279958
      Universal Standard Universal Fit Catalytic Converter by Eastern®. Catalytic Series: Standard. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. CARB Compliant: No. Without Inlet Gasket....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $45.48 - $65.22
    • (1 review)
      # 139371681
      Universal ECO III Universal Fit Catalytic Converter by Eastern®. Catalytic Series: ECO III. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Catalytic Converter Oxygen Sensor Location:...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $86.06 - $89.96




    Guides & Articles

    • Replacement Emission Control Parts
      Oxygen Sensors - Why Does My Car Have Four, And Can I Replace One Myself?
      An oxygen sensor (also known as an O2 sensor or Lambda sensor) is a sensor designed to generate a reading based on the content of oxygen in an automotive exhaust system. The sensor itself is made of a ceramic compound with porous-shaped electrodes coated in platinum, surrounded by a protective metal shell casing. O2 sensor casings are threaded, and the entire unit is designed to screw in until it reaches a half-in, half-out position on the exhaust pipe. Modern oxygen sensors are heated to ensure they reach operating temperature quickly.

    Popular Products

    Smart Car Emission Control Parts Reviews

    Average rating:  4.5  4.5 - 3 reviews
    4.8 of 5
    Good Purchase
    Recently I have mounted new cat. My purchase has a faultless casing and everything measures up perfectly. That's nice deal for my Dodge, because the sound great. I like the tonality of these high flow catalytic if your looking for high flow cats these are the way to go.
    CPosted by Craig Walters (Louisbourg, NS) /
    Was this review helpful for you? Yes
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