1991 BMW 3-Series Emission Control Parts
Select Your Submodel
- Bosch®Premium Narrow-band Oxygen SensorBMW 3-Series 1991, Premium Narrow-band 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...OE Identical ConnectorCompact Design$67.40 - $111.14
- Walker Products®Oxygen SensorBMW 3-Series 1991, Oxygen Sensor by Walker Products®. Position: Upstream. 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...High quality at an affordable priceExpertly made from premium materials$56.99 - $77.08
- Bosch®Narrow-band Oxygen SensorBMW 3-Series 1991, Narrow-band Oxygen Sensor by Bosch®. Position: Upstream. The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which...OE-EquivalentOE Style connectors and wire lengths$38.97 - $64.20
- Walker Products®Premium Oxygen SensorBMW 3-Series 1991, Premium Oxygen Sensor by Walker Products®. Position: Upstream. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet or exceed all original equipment specifications and test...Improved Engine Response & PerformanceLower Emissions$67.29 - $96.35
- Denso®Universal Fit Oxygen SensorBMW 3-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$45.63 - $82.40
- Vaico®Engine Block Breather ValveBMW M3 1991, Engine Block Breather Valve by Vaico®. 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 deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$91.14
- Gates®Engine Crankcase Breather HoseBMW 325i / 325is / 325iX 1991, Engine Crankcase Breather Hose by Gates®. Location: Valve Cover to Throttle Body. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using...High quality at an affordable priceExpertly made from premium materials$13.60
- Genuine®PCV Valve GrommetBMW 318i / 318is / 325i / 325is / 325iX / M3 1991, PCV Valve Grommet by Genuine®. Location: Level Sensor in the Washer Fluid Reservoir. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford....Made with precision and quality in mindDesigned to meet your specific needs$8.28
- WVE®Oxygen Sensor RelayBMW 318i / 318is / M3 1991, Oxygen Sensor Relay by WVE®. WVE emissions products are made to meet or exceed vehicle manufacturer specifications to work in concert with the fuel system, underhood electronics and the engine to minimize...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$8.36
- URO Parts®Flame Trap HoseBMW 325i / 325is / 325iX 1991, Flame Trap Hose 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...Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation$4.21
- Elaplast®Breather HoseBMW 325i / 325is / 325iX 1991, Breather Hose by Elaplast®. 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...Carefully engineered for proven performanceDesigned for long-lasting service$15.21
- ACDelco®Gold™ EGR Time Delay Switch ConnectorBMW 318i / 318is / 325is 1991, Gold™ EGR Time Delay Switch Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.09
- MagnaFlow®Pre-OBDII Universal Fit Catalytic ConverterBMW 3-Series 1991, Pre-OBDII Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Without Air Tube. Catalytic Inlet Diameter: 2". If your car needs a new catalytic converter, install one that will get you through...$293.00 - $740.00
- MagnaFlow®Standard Universal Fit Catalytic ConverterBMW 3-Series 1991, Standard Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Without Air Tube. Without O2 Sensor Port. If your car needs a new catalytic converter, install one that will get you through the smog...$97.00 - $124.00
- MagnaFlow®Standard Direct Fit Catalytic ConverterBMW 3-Series 1991, Standard Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. Without Air Tube. With Pre-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2.25". Catalytic Outlet Diameter: 2.25". If your car needs...$517.00 - $579.00
- TruParts®Exhaust System HangerBMW 3-Series 1991, Exhaust System Hanger by TruParts®. Go with this high-quality product to restore your vehicle’s lost power and bring it back to its optimal condition. Made from the finest materials in compliance with rigorous...Made utilizing the finest materials and equipmentEngineered to restore your vehicle to its pristine condition$1.70 - $54.19
- Davico®Direct Fit Catalytic Converter and Pipe AssemblyBMW 3-Series 1991, Catalytic Converter and Pipe Assembly by Davico®. Converter Configuration: Direct Fit. Position: Center. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged...$342.52 - $770.38
- Walker®CalCat™ Universal Fit Catalytic ConverterBMW 3-Series 1991, CalCat™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. Without O2 Sensor Port. Specifically designed to comply with the California Air Resources Board (CARB) Regulations. Universal fit units...$391.03 - $498.65
- Walker®Ultra™ Universal Fit Round Body Catalytic ConverterBMW M3 1991, Ultra™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length: 11.5"....$80.67
- BRExhaust®Exhaust BoltBMW 3-Series To VIN # BA73 1991, Exhaust Bolt by BRExhaust®. Location: Converter to Rear Muffler. BRExhaust has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job...Constructed for a hassle-free exhaust repairEnsures a precise fit$8.77
- Davico®Universal Fit Catalytic ConverterBMW 318i / 318is 1991, Catalytic Converter by Davico®. Converter Configuration: Universal Fit. Position: Rear. Catalytic Inlet Diameter: 2". Catalytic Converter Overall Length: 15". This Universal fit catalytic converter by Davico will...$123.60
- Granatelli Motor Sports®Valve Cover BreatherValve Cover Breather by Granatelli Motor Sports®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your...Made with precision and quality in mindDesigned to meet your specific needs$15.96
- Granatelli Motor Sports®Valve Cover Breather InsertValve Cover Breather Insert by Granatelli Motor Sports®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet...Made with precision and quality in mindDesigned to meet your specific needs$50.69 - $67.83
- iD Select®ECO II Universal Fit Catalytic ConverterUniversal ECO II Catalytic Converter by iD Select®. Converter Configuration: Universal Fit. Catalytic Converter Overall Length: 16". Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select....$144.22 - $146.77
- Walker®Ultra™ Universal Fit Catalytic ConverterUniversal Ultra™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. This part features the correct load of precious metals to ensure the proper limitation of tailpipe emissions. It meets the EPA policy and...$100.00 - $285.30
- AP Exhaust®Enhanced Standard Duty Universal Fit Oval Body Catalytic ConverterUniversal Enhanced Standard Duty Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without O2 Sensor Port. Catalytic Converter Overall Length: 16". Today’s exhaust...$90.57 - $125.57
- AP Exhaust®Universal Fit Round Body Catalytic ConverterUniversal Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The...$232.31 - $339.18
- Torxe™Universal Fit Catalytic ConverterUniversal Catalytic Converter by Torxe™. Converter Configuration: Universal Fit. Catalytic Inlet Diameter: 2". Universal Fit Catalytic Converter by Torxe. Replace your clogged, corroded, and malfunctioning catalytic converter for the...$108.00 - $175.00
- Eastern Catalytic®Universal Fit Large Oval Body Catalytic ConverterUniversal Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Large Oval. Catalytic Converter Overall Length: 16". Whether your catalytic converter is damaged by road debris...$155.38 - $255.04
- Eastern Catalytic®Universal Fit Oval Body Catalytic ConverterUniversal Catalytic Converter by Eastern Catalytic®. 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...$118.45 - $187.70
Shop By Service Type
Popular Products
- $252.99 - $300.15
- $80.67 - $498.65
- $195.02 - $308.69
- $13.43 - $23.12
1991 BMW 3-Series Models
Popular Searches