1991 BMW 5-Series Emission Control

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    • (0 reviews)
      # 21074466
      BMW 5-Series 1991, Oxygen Sensor by Denso®. Position: Upstream. 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
      $60.84 - $61.05
    • (0 reviews)
      # 710325081
      BMW 5-Series 1991, Universal Fit Oxygen Sensor by Denso®. Position: Upstream. 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...
      Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants
      $37.93 - $60.12
    • (0 reviews)
      # 24141780
      BMW 5-Series 1991, Premium Oxygen Sensor by Bosch®. Position: Upstream. 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...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $68.58 - $89.10
    • (0 reviews)
      # 24141789
      BMW 5-Series 1991, Universal Fit Oxygen Sensor by Bosch®. Position: Upstream. 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...
      Patented SmartLink™ connector systemNo special tools required for installation
      $35.88 - $56.31
    • (0 reviews)
      # 22132941
      BMW 5-Series 1991, Oxygen Sensor by NTK®. Position: Upstream. Location: B1S1. Thimble type sensors feature a ceramic element that projects into the exhaust system and becomes electrically conductive at high temperature. The sensor...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $67.88 - $69.31
    • (0 reviews)
      # mpn3368502575
      BMW 525i 1991, Oxygen Sensor by Spectra Premium®. Position: Upstream. 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...
      Increase vehicle fuel economy and engine performance while decreasing vehicle exhaust emissions100% performance tested to meet vehicle requirements
      $34.64
    • (0 reviews)
      # mpn2888399090
      BMW 525i / 535i / M5 1991, CalCat™ Catalytic Converter by Walker®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Standard Oval. With 1 Inlet. Without Air Tube. Without O2 Sensor...
      $113.29
    • (0 reviews)
      # mpn1833605
      BMW 525i / 535i / M5 1991, Ultra™ Catalytic Converter by Walker®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Large Oval. With 1 Inlet. With Air Tube. With O2 Sensor Port....
      $94.41
    • (0 reviews)
      # mpn474117096
      BMW 525i 1991, Catalytic Converter and Pipe Assembly by AP Exhaust®. Emissions: CARB compliant. Converter Configuration: Direct Fit. Position: Center. The growing concern for the environment means there is a growing need for quality...
      $166.66
    • (0 reviews)
      # 81396007
      BMW 5-Series 1991, Catalytic Converter by AP Exhaust®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Three-Way No / Air OBDII By Design US-EPA Compliant catalytic converters are...
      $99.90 - $146.06
    • (0 reviews)
      # mpn4028414880
      BMW 535i Sedan 1991, Catalytic Converter and Pipe Assembly by Bosal®. Converter Configuration: Direct Fit. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to...
      $292.20
    • (0 reviews)
      # 86067617
      BMW 5-Series 1991, 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...
      $386.99 - $698.29
    • (0 reviews)
      # 545951104
      BMW 5-Series 1991, Catalytic Converter and Pipe Assembly by Davico®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Includes: Gaskets. This direct-fit catalytic converter by Davico will be a great solution to replace...
      $296.93 - $352.44
    • (0 reviews)
      # 380751376
      BMW 5-Series with PRE-OBDII Models 1991, Pre-OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Catalytic Inlet Diameter:...
      $194.27 - $198.08
    • (0 reviews)
      # 49709027
      BMW 5-Series 1991, Standard Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Outlet Diameter:...
      $99.38 - $99.49
    • (0 reviews)
      # mpn53631964
      BMW 525i / 535i / M5 1991, 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
      $93.93
    • (0 reviews)
      # mpn4485299405
      BMW M5 1991, Secondary Air Injection Pump Control Valve by Pierburg®. 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...
      High quality at an affordable priceExpertly made from premium materials
      $20.85
    • (0 reviews)
      # mpn4495526434
      BMW M5 1991, Vacuum Control Valve by Pierburg®. Non-Return Valve. 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...
      24 Months/24,000 MilesMade to provide unequaled quality and reliability
      $15.40
    • (0 reviews)
      # 77569612
      BMW 5-Series 1991, 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $2.26 - $8.90
    • (0 reviews)
      # mpn126104567
      BMW 525i 1991, 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 performance.
      High quality at an affordable priceExpertly made from premium materials
      $3.97
    • (0 reviews)
      # mpn1824988
      BMW 525i 1991, Breather Hose by Elaplast®. 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
      $3.62
    • (0 reviews)
      # 889490549
      BMW 525i 1991, Breather Hose by Rein®. Air, breather, and vacuum hoses channel air and vapors and make sure your vacuum operated accessories can be properly actuated. Unfortunately, age and exposure to heat and the environment can cause...
      Direct fit, form, and functionEngineered to the highest OE standards
      $2.45 - $3.36
    • (0 reviews)
      # mpn4488435253
      BMW 535i / M5 1991, OE Connector 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
      $98.55
    • (0 reviews)
      # mpn4498313190
      BMW M5 1991, Secondary Air Injection Vacuum Delay Valve by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium...
      Carefully crafted to provide optimum performanceMade from premium materials to last
      $56.45
    • (0 reviews)
      # 821380121
      BMW 5-Series 1991, Crankcase Breather Hose by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials...
      Carefully crafted to provide optimum performanceMade from premium materials to last
      $4.79 - $35.21
    • (0 reviews)
      # mpn4498313624
      BMW 525i 1991, Engine Crankcase Breather Hose Connector by Genuine®. If your driveline system parts are in need of repair, don’t compromise the performance and safety of your car with suspect, off-brand replacement parts from the...
      Designed to restore your vehicle’s driveline systemGenuine OE replacement parts from the OE manufacturer
      $6.29
    • (0 reviews)
      # 585588870
      BMW 5-Series 1991, Professional™ Oxygen Sensor by ACDelco®. Position: Upstream. 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...
      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
      $92.16 - $103.18
    • (0 reviews)
      # mpn2471216
      BMW 535i / M5 1991, Oxygen Sensor by Delphi®. Position: Front. 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...
      OE connectors and wire lengths within 3" of OE specificationsResists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long life
      $71.38
    • (0 reviews)
      # 546125294
      BMW 5-Series 1991, Standard Catalytic Converter and Pipe Assembly by Eastern®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Location: Undercar. With 1 O2 Sensor Port. If you need to replace your failed or damaged...
      $218.01 - $218.94
    • (0 reviews)
      # mpn1244355
      BMW 525i / 535i 1991, Standard Catalytic Converter by Eastern®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Position: Undercar. Catalytic Converter Body Shape: Large Oval. Without O2 Sensor Ports. Catalytic Inlet...
      $59.20
    • (0 reviews)
      # 546081335
      BMW 5-Series 1991, Standard Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Includes: Band Clamp (1). If your car needs replacement, install one that will get you through the smog check....
      $370.74 - $406.53


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    • Replacement Emission Control Parts
      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...
      by Timothy Zahl

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