2002 Audi TT Emission Control

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    • (0 reviews)
      # 21073918
      Audi TT 2002, 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
      $81.53 - $135.77
    • (0 reviews)
      # 585508196
      Audi TT 2002, Professional™ Oxygen Sensor by ACDelco®. If your O2 Sensor is not functioning properly, you are robbing yourself of performance and costing yourself money at the gas pump. Let ACDelco’s Professional Oxygen Sensors...
      ACDelco Professional Oxygen Sensors earn the name ACDelco by being put through a variety of tests, often under extreme and unusual conditionsCustomers can receive better gas mileage with a properly working oxygen sensor
      $72.05 - $129.02
    • (0 reviews)
      # mpn991761
      Audi TT / TT Quattro 1.8L AWP Engine 2002, Air Fuel Ratio Sensor by Denso®. Position: Upstream. Make sure your engine runs efficiently and produces fewer emissions by replacing your malfunctioning fuel-ratio sensors with these top-notch...
      Designed to help reduce fuel consumption and harmful emissionsMade with the use of state-of-the-art sensor technologies
      $94.42
    • (0 reviews)
      # 22132637
      Audi TT 2002, Oxygen Sensor by NTK®. Thimble type sensors feature a ceramic element that projects into the exhaust system and becomes electrically conductive at high temperature. The sensor element then sends voltage signals back to the...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $69.90 - $89.69
    • (0 reviews)
      # 22809748
      Audi TT 2002, 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...
      Increase vehicle fuel economy and engine performance while decreasing vehicle exhaust emissions100% performance tested to meet vehicle requirements
      $46.63 - $184.38
    • (0 reviews)
      # mpn8385
      Audi TT / TT Quattro 2002, Secondary Air Injection Pump by Cardone®. Import. 100% testing of all units guarantees reliable performance every time. High temperature grease extends bearing life, resulting in longer pump life. New carbon...
      50-state emissions street legal100% testing of all units guarantees reliable performance every time.
      $111.02
    • (2 reviews)
      # 24140529
      Audi TT 2002, 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...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $60.44 - $149.09
    • (0 reviews)
      # 24140541
      Audi TT 1.8L 2002, Universal Fit Oxygen Sensor by Bosch®. Universal Oxygen Sensors with OE SmartLink are quick and easy to install. Each sensor has enough length of sensor wire to allow maximum replacement of worn harnesses. Properly...
      Patented SmartLink™ connector systemNo special tools required for installation
      $39.85
    • (0 reviews)
      # mpn932599
      Audi TT / TT Quattro 1.8L C / X Engine VIN Character 2002, Wideband Oxygen Sensor by Bosch®. Position: Upstream. This sensor utilizes a sophisticated sensing element enabling it to produce a precise output in proportion to the air/fuel...
      Detects the exact amount of unburned fuel in the exhaust streamOE connectors and OE-style harness for continuous wire from connector to sensor
      $82.01
    • (0 reviews)
      # 152247374
      Audi TT 2002, Air Fuel Ratio Sensor by NTK®. Position: Upstream. Location: B1S1. Air/Fuel Ratio Sensors Utilize a Sophisticated Sensing Element that Enables Them to Produce a Precise Output in Proportion to the Air/Fuel Ratio. AFR...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $99.16
    • (0 reviews)
      # 81757423
      Audi TT 2002, Oxygen Sensor by Delphi®. As one of the leading suppliers of oxygen sensor technology since 1978, Delphi planar technology is the result of their OE and aftermarket engineers partnering together to develop the most...
      OE connectors and wire lengths within 3" of OE specificationsResists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long life
      $61.11 - $72.00
    • (0 reviews)
      # 1060531906
      Audi TT 2002, Oxygen Sensor by Aceon®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
      Designed to provide long-lasting service lifeMade utilizing state-of-the-art equipment
      $22.08 - $48.90
    • (0 reviews)
      # mpn53630438
      Audi TT / TT Quattro 2002, Intermotor™ PCV Valve by Standard®. No Connector. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $12.30
    • (0 reviews)
      # mpn1032497395
      Audi TT / TT Quattro 2002, PCV Valve by URO Parts®. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part will make your exhaust system work...
      Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation
      $6.40
    • (0 reviews)
      # mpn449442
      Audi TT / TT Quattro 2002, PCV Valve by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the...
      OE quality products from top original equipmentTop quality materials
      $10.37
    • (0 reviews)
      # mpn3610113388
      Audi TT / TT Quattro 1.8L 2002, Secondary Air Injection Pump by Dorman®. Pulley Not Required. Dorman’s A.I.R. Pump comes with all the hardware and other components necessary for a complete repair. Since this part is a direct...
      Save money by replacing only the failed pump - instead of the entire mating cover assemblyReplacement restores A.I.R. System to proper functioning
      $408.95
    • (0 reviews)
      # mpn4495526490
      Audi TT / TT Quattro 2002, Secondary Air Injection Pump by Pierburg®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
      Made to provide unequaled quality and reliabilityMade with the use of the latest technologies
      $295.67
    • (0 reviews)
      # 1013649128
      Audi TT Engine Family # 2ADXV01.8346 2002, CalCat™ Catalytic Converter and Pipe Assembly by Walker®. Emissions: CARB compliant. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. With O2 Sensor...
      Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability
      $344.46
    • (0 reviews)
      # 1016080051
      Audi TT Engine Family # 2ADXV01.8346 2002, CalCat™ Catalytic Converter and Pipe Assembly by Walker®. Emissions: CARB compliant. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. With O2 Sensor...
      Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability
      $344.46
    • (0 reviews)
      # 286159498
      Audi TT 2002, CalCat™ Catalytic Converter by Walker®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. Without Air Tube. Without O2 Sensor Port. Catalytic...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $109.63 - $124.35
    • (0 reviews)
      # 35446597
      Audi TT Quattro Base 1.8L AMU Engine 2002, Ultra™ Catalytic Converter by Walker®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 2 Inlets. With O2 Sensor Port. Catalytic...
      Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability
      $379.72
    • (0 reviews)
      # 1016107391
      Audi TT 2002, Ultra™ Catalytic Converter and Pipe Assembly by Walker®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. With O2 Sensor Port. Catalytic Converter...
      Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability
      $211.68
    • (0 reviews)
      # 286159503
      Audi TT 1.8L 2002, Ultra™ Catalytic Converter by Walker®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. Without Air Tube. Without O2 Sensor Port. The Right...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $70.65 - $86.10
    • (0 reviews)
      # mpn1206808
      Audi TT / TT Quattro 1.8L 2002, ECO II Catalytic Converter by Eastern®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Position: Undercar. Catalytic Converter Body Shape: Round. Without Air Tube. With 1 O2 Sensor...
      Converts harmful engine emissions to less dangerous gases and water vaporAdvanced design for maximum engine output
      $61.56
    • (0 reviews)
      # 252872356
      Audi TT 2002, Catalytic Converter and Pipe Assembly by AP Exhaust®. Converter Configuration: Direct Fit. Without Air Tube. The growing concern for the environment means there is a growing need for quality emission control products. AP...
      5-year/50,000-mile warranty on converter body25,000-mile warranty on emissions
      $246.70 - $467.80
    • (0 reviews)
      # 128873310
      Audi TT 2002, Catalytic Converter by AP Exhaust®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Without Air Tube. Without O2 Sensor Port. Three-Way No / Air OBDII By Design US-EPA Compliant catalytic converters are...
      A multitude of Universal converter bodies provided for maximum coverageProvides professional installer with immediate installation options
      $132.11 - $203.92
    • (0 reviews)
      # 86067434
      Audi TT 2002, Catalytic Converter and Pipe Assembly by DEC®. Converter Configuration: Direct Fit. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters...
      Direct fitMade from a heavy duty stainless steel outer shell
      $298.45 - $698.29
    • (0 reviews)
      # 103125024
      Audi TT 2002, Catalytic Converter and Pipe Assembly by Davico®. Converter Configuration: Direct Fit. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your...
      Helps your vehicle emit harmless gasesDirect OEM replacement
      $194.65 - $414.12
    • (0 reviews)
      # 898851998
      Audi TT with PC Weight Class with California Emission 2002, Catalytic Converter by Davico®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Position: Center. This Universal fit catalytic converter by Davico will be a...
      $246.05
    • (0 reviews)
      # 380730327
      Audi TT 2002, Heavy Metal Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Without Air Tube. If your car needs replacement, install one that will get you through the smog check. This...
      $290.71 - $529.10
    • (0 reviews)
      # 98374735
      Audi TT 2002, Heavy Metal Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall...
      $100.27
    • (0 reviews)
      # 22199600
      Audi TT 2002, OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Direct Fit. Without Air Tube. If your car needs replacement, install one that will get you through the smog check. This converter...
      $408.37 - $775.16
    • (0 reviews)
      # 49708905
      Audi TT 2002, OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Converter Overall...
      $190.46 - $241.20
    • (0 reviews)
      # 380730329
      Audi TT 2002, OEM Grade Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Direct Fit. If your car needs replacement, install one that will get you through the smog check. This converter is part of the...
      $349.54 - $627.92
    • (0 reviews)
      # 380730330
      Audi TT 2002, OEM Grade Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall...
      $122.43
    • (0 reviews)
      # mpn4489688830
      Audi TT / TT Quattro 2002, Engine Breather Housing Bleeder Valve by 034Motorsport®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...
      $37.98
    • (0 reviews)
      # mpn53630550
      Audi TT / TT Quattro 2002, Intermotor™ Vapor Canister Purge Solenoid by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $85.10
    • (1 review)
      # 260249463
      Audi TT 2002, Vapor Canister Purge Valve by Dorman®. Location: Near Intake Manifold. Dorman's Vapor Canister Purge Valve restores on-board diagnosis of the EVAP system. Plus, its high quality metal and plastic construction keeps the...
      Designed for enduring resistance to harsh road and weather conditionsDirect replacement for a proper fit every time
      $19.74
    • (0 reviews)
      # mpn4494250757
      Audi TT / TT Quattro 2002, Emission Check Valve by MTC®. Engineering each part from the very core allows MTC to offer its customers the very highest in automotive parts quality while remaining highly affordable. MTC is an industry...
      $4.08
    • (0 reviews)
      # mpn4495526373
      Audi TT / TT Quattro 2002, EGR Vacuum Solenoid by Pierburg®. N249. "Diesel" and "downsizing" are terms that largely account for the popularity of electropneumatic transducers, a prime mainstay of Pierburg's sales. These are devices...
      High quality at an affordable priceExpertly made from premium materials
      $54.47
    • (0 reviews)
      # mpn53630736
      Audi TT / TT Quattro 2002, Intermotor™ Secondary Air Injection Pump Check Valve by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $19.99
    • (0 reviews)
      # mpn1032497506
      Audi TT / TT Quattro 2002, Emission Check Valve by URO Parts®. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part will make your exhaust...
      High quality plastic and/or steel constructionDirect replacement for a proper fit every time
      $2.69
    • (0 reviews)
      # mpn4495526475
      Audi TT / TT Quattro 2002, Air Pump Check Valve by Pierburg®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
      $83.46
    • (0 reviews)
      # mpn4495526433
      Audi TT / TT Quattro 2002, Intake System Vacuum Solenoid by Pierburg®. "Diesel" and "downsizing" are terms that largely account for the popularity of electropneumatic transducers, a prime mainstay of Pierburg's sales. These are devices...
      $56.81
    • (0 reviews)
      # 133896369
      Audi TT 2002, Breather Hose by Dorman®. Location: Y From Valve Cover. Keep your vehicle’s emission control system in top-notch condition with superior Dorman replacement emission control parts. Manufactured from top-grade materials...
      Easy to installDirect replacement for a proper fit
      $21.54
    • (1 review)
      # 94027991
      Audi TT 2002, Breather Hose by URO Parts®. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle's emissions control system is in need of repair, but before you waste your time and gas running out...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $7.77 - $19.49
    • (0 reviews)
      # mpn2876371116
      Audi TT / TT Quattro 2002, PCV Valve Hose by URO Parts®. Location: To Breather Valve. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part...
      Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation
      $34.47
    • (0 reviews)
      # mpn1032497543
      Audi TT / TT Quattro 2002, T-Shaped PCV Housing by URO Parts®. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part will make your exhaust...
      High quality plastic and/or steel constructionDirect replacement for a proper fit every time
      $4.57
    • (0 reviews)
      # mpn4476106278
      Audi TT / TT Quattro 1.8L 2002, PCV Valve Hose by Gates®. Emission Hose is constructed from high quality materials for durability and maximum service life. Replacement hose effectively restores the emission system to proper operation...
      High quality at an affordable priceExpertly made from premium materials
      $15.69
    • (0 reviews)
      # mpn4515244899
      Audi TT / TT Quattro 2002, Crankcase Ventilation Hose by Febi®. From valve housing to oil filter bracket. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced...
      24 Months/24,000 Miles WarrantyThe finest quality at a great price
      $15.87
    • (0 reviews)
      # 750478308
      Audi TT 1.8L 2002, Breather Hose Complete Kit by 034Motorsport®. Sold as a complete kit.
      $179.07 - $184.50
    • (0 reviews)
      # 889442574
      Audi TT 2002, Crankcase Breather Hose by 034Motorsport®. Location: Lower Block. 1 Piece. Reinforced silicone 1.8T lower block breather hose to replace the crumbling factory plastic and rubber lower breather hoses. This fully reinforced...
      24 Months WarrantyMade to provide unequaled quality and reliability
      $86.82
    • (0 reviews)
      # mpn4489688833
      Audi TT Quattro 1.8L AMU Engine 2002, Pressure Regulating Valve Breather Hose by 034Motorsport®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
      24 Months WarrantyMade to provide unequaled quality and reliability
      $27.13
    • (0 reviews)
      # 750478202
      Audi TT 2002, Valve Cover Breather Hose by 034Motorsport®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
      $43.41 - $48.84
    • (0 reviews)
      # mpn4489688853
      Audi TT / TT Quattro 2002, Valve Housing by 034Motorsport®. Location: Engine Breather Tubes To Bleeder Valve.
      $16.28
    • (0 reviews)
      # mpn3937719124
      Audi TT Quattro 1.8L AMU Engine 2002, Catalytic Converter Gasket by AJUSA®. If you need durable gaskets to prevent leaks on your vehicle, AJUSA is the way to go. Engineered using the latest technologies and global engineering resources,...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $3.81
    • (0 reviews)
      # 898713514
      Audi TT Quattro 1.8L 2002, Catalytic Converter Gasket by HJS®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
      High quality at an affordable priceExpertly made from premium materials
      $6.69 - $7.92
    • (0 reviews)
      # mpn3772741642
      Audi TT / TT Quattro 2002, Secondary Air Injection Pump Bushing by URO Parts®. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part will...
      Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation
      $1.59
    • (0 reviews)
      # mpn2169838
      Audi TT / TT Quattro 1.8L 2002, Secondary Air Injection Pump Mount by Rein®. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle's emissions control system is in need of repair, but before you...
      OE-quality replacement partsThe finest quality at a great price
      $5.55
    • (0 reviews)
      # 1083569749
      Audi TT Quattro 1.8L 2002, Catalytic Converter and Pipe Assembly by PaceSetter®. Emissions: EPA compliant. Converter Configuration: Direct Fit. If you want to get the most out of your vehicle, this PaceSetter product is second to none....
      Direct-Fit Catalytic Converters are a direct replacement for original equipmentManufactured using mandrel-bent 16-gauge and stainless steel tubing
      $342.36 - $368.84




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      August 18, 2014
      Oxygen Sensors - Why Does My Car Have Four, And...
      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...
      by Michael Grayen
    • Ignition Parts
      August 10, 2014
      Auto Parts: Dealer vs. Aftermarket
      The question of whether to buy parts from an automotive dealer vs. ones from aftermarket manufacturers is as age-old as the automobile itself. Below, we'll take a look...
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