2003 Mercury Mountaineer Emission Control

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    • (0 reviews)
      # mpn2478060
      Mercury Mountaineer 2003, EGR Valve by Delphi®. Delphi exhaust gas recirculation (EGR) valves are a 100 percent OE line, providing an exact fit without the need for orifice washers or clocking for fast, easy installation. Precision...
      Increases fuel efficiency while eliminating the potential for malfunctionsGaskets included
      $46.28
    • (0 reviews)
      # mpn44425254
      Mercury Mountaineer 4.0L 2003, Vapor Canister by Standard®. Canister Only. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      Canister Purge valves meet or exceed original equipment specifications, providing confidence in every boxFeaturing industrial grade materials for robust performance
      $71.90
    • (0 reviews)
      # 21097836
      Mercury Mountaineer 2003, 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,...
      Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants
      $25.10 - $26.18
    • (0 reviews)
      # 485594115
      Mercury Mountaineer 2003, 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...
      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
      $36.23
    • (0 reviews)
      # mpn1299778
      Mercury Mountaineer With California Emission 2003, Vertical Vapor Canister by Motorcraft®. Vapor Canister. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle's emissions control system is in need...
      Direct OEM replacement for proper fitRecommended by Ford Motor Company
      $81.37
    • (1 review)
      # 44962379
      Mercury Mountaineer 2003, Oxygen Sensor by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      One-piece laser welded body for maximum protection and precise operation maintaining sensor integrityDual internal talc seal makes Our Oxygen sensors last longer
      $33.19 - $46.35
    • (0 reviews)
      # 689562527
      Mercury Mountaineer 2003, PCV Valve by Motorcraft®. 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...
      Direct OEM replacementMeets strict Ford Motor Company standards
      $10.75 - $29.21
    • (0 reviews)
      # mpn1291770417
      Mercury Mountaineer 2003, Vertical Vapor Canister by Dorman®. Canister Only. Dorman’s Vapor Canister is engineered from robust materials. As part of the Evap system, it effectively stores fuel vapors from the gas tank and sends them...
      Direct replacement for a proper fitA necessary replacement item for passing inspection in certain states
      $74.95
    • (0 reviews)
      # mpn44431880
      Mercury Mountaineer 2003, EGR Valve by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      Polyester-reinforced silicone diaphragm resists thermal aging in temperatures up to 200°CInjection-molded high-temperature polymer prevents temperature-releated failures
      $42.91
    • (0 reviews)
      # 710404090
      Mercury Mountaineer 2003, Universal Fit 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...
      Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants
      $35.08
    • (3 reviews)
      # 24172273
      Mercury Mountaineer 2003, 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...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $26.57 - $31.71
    • (0 reviews)
      # 24172291
      Mercury Mountaineer 2003, 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....
      Patented SmartLink™ connector systemNo special tools required for installation
      $34.02 - $39.85
    • (0 reviews)
      # mpn1241583
      Mercury Mountaineer 4.0L 2003, Oxygen Sensor by Motorcraft®. Position: Downstream Driver Side. 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,...
      Designed for specific Ford, Mercury, and Lincoln vehiclesBuilt to strict Ford Motor Company specifications
      $32.27
    • (0 reviews)
      # 22143021
      Mercury Mountaineer 2003, 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...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $27.20 - $28.04
    • (0 reviews)
      # 81772975
      Mercury Mountaineer 2003, 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...
      OE connectors and wire lengths within 3" of OE specificationsResists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long life
      $28.39 - $35.62
    • (0 reviews)
      # 22847437
      Mercury Mountaineer 2003, 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...
      Increase vehicle fuel economy and engine performance while decreasing vehicle exhaust emissions100% performance tested to meet vehicle requirements
      $18.06 - $18.17
    • (0 reviews)
      # 1060534451
      Mercury Mountaineer 2003, 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
      $17.79 - $18.65
    • (0 reviews)
      # 175642788
      Mercury Mountaineer 2003, PCV Valve by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $11.38 - $26.58
    • (0 reviews)
      # mpn461298
      Mercury Mountaineer 4.0L 2003, 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
      $17.67
    • (0 reviews)
      # mpn1413466
      Mercury Mountaineer 2003, Tru-Tech™ EGR Valve by Standard®. 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...
      Injection-molded high-temperature polymer prevents temperature-releated failuresDirect-fit OE replacement with expected lifespan of more than 16 million cycles
      $37.25
    • (0 reviews)
      # mpn1216985
      Mercury Mountaineer 2003, EGR Valve by Motorcraft®. 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $85.76
    • (0 reviews)
      # 350192313
      Mercury Mountaineer 2003, CalCat™ Catalytic Converter and Pipe Assembly by Walker®. Emissions: CARB compliant. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round and Standard Oval. With 2 Inlets. With O2 Sensor...
      Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability
      $557.23 - $796.13
    • (0 reviews)
      # 350192316
      Mercury Mountaineer 2003, CalCat™ Catalytic Converter by Walker®. Emissions: CARB compliant. Converter Configuration: Universal Fit. With 1 Inlet. Without Air Tube. Without O2 Sensor Port. Specifically designed to comply with the...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $140.87 - $149.43
    • (0 reviews)
      # 1016074070
      Mercury Mountaineer 4.0L 2003, Ultra™ Catalytic Converter and Pipe Assembly by Walker®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Front Round and Rear Large Oval. With 2 Inlets....
      Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability
      $439.55
    • (0 reviews)
      # 842239659
      Mercury Mountaineer 4.6L 2003, Ultra™ Catalytic Converter by Walker®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round and Standard Oval. With 2 Inlets. With O2 Sensor Port....
      Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability
      $527.49
    • (0 reviews)
      # 286311729
      Mercury Mountaineer 2003, Ultra™ Catalytic Converter by Walker®. Emissions: EPA compliant. Converter Configuration: Universal Fit. With 1 Inlet. Without Air Tube. Without O2 Sensor Port. The Right converter, the Right choice....
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $93.90 - $95.45
    • (0 reviews)
      # 286311768
      Mercury Mountaineer 2003, ECO CARB Catalytic Converter and Pipe Assembly by Eastern®. Emissions: CARB compliant. Converter Configuration: Direct Fit. If you need to replace your failed or damaged catalytic converter, this product is the...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $249.35 - $713.43
    • (0 reviews)
      # 17574537
      Mercury Mountaineer 2003, ECO II Y-Pipe Catalytic Converter Assembly by Eastern®. Emissions: EPA compliant. Converter Configuration: Direct Fit. With 4 O2 Sensor Ports. If you need to replace your failed or damaged catalytic converter,...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $443.94 - $526.08
    • (0 reviews)
      # 100292692
      Mercury Mountaineer 2003, ECO II Catalytic Converter by Eastern®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Catalytic Inlet Diameter: 2.25". Catalytic...
      Converts harmful engine emissions to less dangerous gases and water vaporAdvanced design for maximum engine output
      $57.05 - $61.56
    • (0 reviews)
      # 100292696
      Mercury Mountaineer 2003, Catalytic Converter by Eastern®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you...
      Converts harmful engine emissions to less dangerous gases and water vaporAdvanced design for maximum engine output
      $59.13 - $178.39
    • (0 reviews)
      # 81398648
      Mercury Mountaineer 4.6L 2003, 608 Series Catalytic Converter by AP Exhaust®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Without Air Tube. With 1 Passenger Side O2 Sensor Port. Three-Way No / Air OBDII By Design...
      A multitude of Universal converter bodies provided for maximum coverageProvides professional installer with immediate installation options
      $78.25 - $95.55
    • (0 reviews)
      # 81677077
      Mercury Mountaineer 2003, Catalytic Converter and Pipe Assembly by AP Exhaust®. Converter Configuration: Direct Fit. Without Air Tube. With 4 O2 Sensor Ports. The growing concern for the environment means there is a growing need for...
      5-year/50,000-mile warranty on converter body25,000-mile warranty on emissions
      $592.24 - $747.02
    • (0 reviews)
      # 621904129
      Mercury Mountaineer 2003, Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Three-Way No / Air OBDII By Design US-EPA Compliant catalytic converters are efficient at the oxidation of HC’s and CO, and very...
      A multitude of Universal converter bodies provided for maximum coverageProvides professional installer with immediate installation options
      $141.77 - $168.76
    • (0 reviews)
      # 95033119
      Mercury Mountaineer with Federal Emission 2003, Catalytic Converter and Pipe Assembly by Bosal®. Emissions: EPA compliant. Converter Configuration: Direct Fit. If you’re in need of a replacement catalytic converter, you can’t do...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $402.99 - $584.12
    • (0 reviews)
      # 86073039
      Mercury Mountaineer 2003, Catalytic Converter and Pipe Assembly by DEC®. Converter Configuration: Direct Fit. With Y-Pipe. Y-Pipe with 3 Converters. Pick out a catalytic converter by DEC and get your emissions back into check without...
      Direct fitMade from a heavy duty stainless steel outer shell
      $498.37 - $778.26
    • (0 reviews)
      # 898796507
      Mercury Mountaineer 2003, 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...
      Helps your vehicle emit harmless gasesDirect OEM replacement
      $224.30 - $715.75
    • (0 reviews)
      # 898852017
      Mercury Mountaineer with LEV1 Standard 2003, Catalytic Converter by Davico®. Emissions: CARB compliant. Converter Configuration: Universal Fit. This Universal fit catalytic converter by Davico will be a great solution to replace your...
      $154.15 - $197.65
    • (0 reviews)
      # mpn2765260277
      Mercury Mountaineer 4.6L 2003, Standard Grade Catalytic Converter by Flowmaster®. Emissions: EPA compliant. Converter Configuration: Direct Fit. With 4 O2 Sensor Ports. Catalytic Converter Overall Length: 58.5". Flowmaster's Standard...
      $349.70
    • (0 reviews)
      # 380871334
      Mercury Mountaineer 2003, Heavy Metal Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Direct Fit. With Y-Pipe Assembly and Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. If your...
      $531.96 - $723.43
    • (0 reviews)
      # 98375543
      Mercury Mountaineer 2003, Heavy Metal Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Without Air Tube. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". If your car...
      $100.27 - $121.78
    • (0 reviews)
      # 380871335
      Mercury Mountaineer with LEV Standard / with LEV1 Standard 2003, OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor...
      $830.65 - $1,194.11
    • (0 reviews)
      # 18316278
      Mercury Mountaineer with LEV Standard / with LEV1 Standard 2003, OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube....
      $142.35 - $229.28
    • (0 reviews)
      # 380871336
      Mercury Mountaineer 2003, OEM Grade Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Direct Fit. With Y-Pipe Assembly and Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. If your car...
      $654.13 - $1,001.44
    • (0 reviews)
      # 380871338
      Mercury Mountaineer 2003, OEM Grade Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Without Air Tube. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". If your car...
      $122.43 - $146.00
    • (0 reviews)
      # mpn44425921
      Mercury Mountaineer 2003, Vapor Canister Vent 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 the highest...
      Superior resistance to enviromental influences due to proprietary one piece molding techniqueProducts are 100% tested in production
      $47.30
    • (0 reviews)
      # mpn2296186
      Mercury Mountaineer 2003, Vapor Canister Vent Solenoid by Dorman®. Dorman's Vapor Canister Vent Solenoid is engineered from robust materials to effectively direct the flow of fuel vapor through the EVAP system. Replacement restores...
      Replacement helps to reduce atmospheric pollution due to hydrocarbon emissionsHigh-quality design for prolonged durability against harsh road and weather conditions
      $53.95
    • (0 reviews)
      # 23888400
      Mercury Mountaineer 2003, Vapor Canister Purge Valve by Motorcraft®. 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...
      Designed for specific Ford, Mercury, and Lincoln vehiclesBuilt to strict Ford Motor Company specifications
      $53.04 - $57.22
    • (0 reviews)
      # mpn44352169
      Mercury Mountaineer 2003, EGR Valve Control Solenoid by Standard®. Vacuum Regulator Assembly. 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
      $18.39
    • (0 reviews)
      # mpn64893
      Mercury Mountaineer 2003, Vacuum Switching Valve by Dorman®. Dorman's Vacuum Switching Valve restores the EVAP system to proper operation. Plus, its durable metal and plastic construction ensures years of service.
      Designed for long-lasting resistance to harsh road and weather conditionsDirect replacement for a proper fit every time
      $18.31
    • (0 reviews)
      # mpn1214811
      Mercury Mountaineer 2003, EGR Pressure Sensor by Motorcraft®. 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $33.39
    • (0 reviews)
      # mpn4495939578
      Mercury Mountaineer 2003, EGR Pressure Feedback Sensor by Original Engine Management®. Original Engine Management EGR Pressure Feedback Sensors are specifically manufactured to duplicate O.E. performance. OEM offers the highest quality...
      $20.72
    • (0 reviews)
      # mpn4299249333
      Mercury Mountaineer 4.6L 2003, PCV Valve Hose by Dorman®. PCV Hoses allows crankcase pressure to escape the engine in a controlled manner. Plus, now with Dorman's PCV Valve Hoses you can replace just the hose, without the expense and...
      Constructed of high quality materials for long lasting useDirect replacement for a proper fit every time
      $22.92
    • (0 reviews)
      # 49330217
      Mercury Mountaineer 2003, PCV Valve Hose by Motorcraft®. 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...
      Direct OEM replacementMeets strict Ford Motor Company standards
      $27.00 - $46.13
    • (0 reviews)
      # mpn1894184363
      Mercury Mountaineer 4.6L 2003, 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 and...
      High quality at an affordable priceExpertly made from premium materials
      $25.64
    • (0 reviews)
      # 939609571
      Mercury Mountaineer 2003, EGR Tube by Dorman®. Dorman’s EGR Tube is durable against stress fractures, corrosion, and blockage from carbon buildup. Some models have been Dorman-engineered to include a modified flex joint that reduces...
      Manufactured from premium grade materialsBuilt to provide exceptional OE quality and function
      $96.95 - $150.95
    • (0 reviews)
      # mpn44413436
      Mercury Mountaineer 2003, Oxygen Sensor Connector by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...
      All electrical connectors are 100% tested for proper mechanical and electrical fit, form and functionAll of Standard connectors are made to OE specifications, to ensure proper fit, form and function
      $46.39
    • (0 reviews)
      # mpn1401317
      Mercury Mountaineer 4.0L 2003, Oxygen Sensor Connector by Motorcraft®. 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...
      Direct OEM replacementDesigned and engineered to strict Ford Motor Company specifications
      $15.39
    • (0 reviews)
      # mpn1341613
      Mercury Mountaineer 2003, Vapor Canister Purge Solenoid Connector by Motorcraft®. 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...
      Direct OEM replacementMeets strict Ford Motor Company standards
      $29.81
    • (0 reviews)
      # mpn1341595
      Mercury Mountaineer 2003, Vapor Canister Vent Solenoid Connector by Motorcraft®. 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...
      Built to strict Ford Motor Company specificationsRecommended by Ford Motor Company
      $31.13
    • (0 reviews)
      # mpn44424386
      Mercury Mountaineer 2003, EGR Pressure Feedback Sensor Connector by Standard®. 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 manufacturersEach part has high-quality direct replacement electrical connector eliminates the need for a harness replacing only the damaged connector, for a cost effective repair solution
      $26.83




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    • Replacement Emission Control Parts
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      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
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      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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    2003 Mercury Mountaineer Emission Control Reviews

    Average rating:  5  5 - 1 review
    4.8 of 5
    PCV Grommet
    The product was exact OEM type.
    TPosted by Thomas (Albuquerque, NM) / September 10, 2017
    2002 Ford F-150
    Was this review helpful for you? Yes

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