2018 Subaru WRX Emission Control Parts
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- TRQ®Upstream O2 Oxygen SensorSubaru WRX 2018, Upstream O2 Oxygen Sensor by TRQ®. TRQ oxygen sensors are manufactured to precise specifications using premium raw materials to optimize your vehicle’s emission system. Each sensor is isostatically-pressed for...Intended to bring your vehicle back to its original gloryBudget-friendly alternative to the OEM part$69.79$71.95Save $2.16 (3%)
- TRQ®Upstream and Downstream 2-Piece O2 Oxygen Sensor SetSubaru WRX 2018, Upstream and Downstream 2-Piece O2 Oxygen Sensor Set by TRQ®. TRQ oxygen sensors are manufactured to precise specifications using premium raw materials to optimize your vehicle’s emission system. Each sensor is...Intended to bring your vehicle back to its original gloryBudget-friendly alternative to the OEM part$97.96$98.95Save $0.99 (1%)
- TRQ®Oxygen SensorSubaru WRX Base / Limited / Premium 2018, Oxygen Sensor by TRQ®. Position: Downstream. If your oxygen sensor fails, replace it with this top-grade part developed to easily fix the problem. Built to fit and function exactly as the part...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$34.87$35.95Save $1.08 (3%)
- Walker Products®Oxygen SensorSubaru WRX 2018, Oxygen Sensor by Walker Products®. 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...High quality at an affordable priceExpertly made from premium materials$50.98 - $146.36
- Walker Products®Premium Oxygen SensorSubaru WRX 2018, Premium Oxygen Sensor by Walker Products®. Position: Downstream. 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$60.09 - $112.34
- Bosch®Narrow-band Oxygen SensorSubaru WRX STI 2.5L 2018, Narrow-band Oxygen Sensor by Bosch®. Position: Downstream. 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...OE-EquivalentOE Style connectors and wire lengths$42.09
- Walker Products®Wideband Premium Oxygen SensorSubaru WRX Base / Limited / Premium 2018, Wideband Premium Oxygen Sensor by Walker Products®. Position: Upstream. Location: B1S1 Sensor. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet or...High quality at an affordable priceExpertly made from premium materials$110.61
- Walker Products®Premium Air Fuel Ratio SensorSubaru WRX STI Base / Limited / Type RA 2.5L 2018, Premium Air Fuel Ratio Sensor by Walker Products®. Position: Upstream. Location: B1S1 Sensor. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to...Designed to meet or exceed OE specifications in form, fit and functionGlobal coverage for import and/or domestic applications$139.71
- Dorman®OE Solutions™ Secondary Air Injection Check ValveSubaru WRX STI 2.5L 2018, OE Solutions™ Secondary Air Injection Check Valve by Dorman®. This secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles, and is engineered...Direct replacement - this secondary air injection check valve is designed to match the fit and function of the original valve on specified vehiclesRestores functionality - this valve is made to fit and fully restore part functionality after the original valve fails$203.44 - $204.06
- TRQ®Secondary Air Injection Check ValveSubaru WRX / WRX STI 2018, Secondary Air Injection Check Valve by TRQ®. Enjoy your driving to the fullest again with TRQ. Made with superior materials to meet your expectations, this top-grade secondary air injection check valve is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$116.35$119.95Save $3.60 (3%)
- TRQ®Secondary Air Injection Control ValveSubaru WRX / WRX STI 2018, Secondary Air Injection Control Valve by TRQ®. Expertly developed to meet the rigorous standards for quality and durability, this top-grade TRQ secondary air injection control valve will bring your vehicle...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$96.97$97.95Save $0.98 (1%)
- Standard®Secondary Air Injection Pump Check ValveSubaru WRX STI 2018, Secondary Air Injection Pump Check Valve by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...Made with precision and quality in mindDesigned to meet your specific needs$257.03
- Dorman®OE Solutions™ Oil Separator CoverSubaru WRX STI 2.5L 2018, OE Solutions™ Oil Separator Cover by Dorman®. This engine oil separator cover is designed to match the fit and function of the original cover on specified vehicles, and is engineered for durability and...Direct replacement - this engine oil separator cover is designed to match the fit and function of the original cover on specified vehiclesRestores functionality - this cover is made to fit and fully restore part functionality after the original cover fails$21.70
- MagnaFlow®OEM Grade Direct Fit Catalytic ConverterSubaru WRX Automatic CVT Transmission 2018, OEM Grade Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. If your car needs replacement, install one that will get you through the smog check. This converter is part of...$534.00 - $839.00
- Big End Performance®PCV Breather CapPCV Breather Cap by Big End Performance®. 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 deliver great...$12.39 - $14.91
- Big End Performance®Clamp On PCV BreatherClamp On PCV Breather by Big End Performance®. This Big End Performance product is just the option for you in case you want to get the most out of your auto. It is made from first-rate materials to provide the highest level of quality....High quality at an affordable priceExpertly made from premium materials$16.27 - $18.98
- 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
- Dorman®OE Solutions™ Oxygen Sensor Bung Repair KitOE Solutions™ Oxygen Sensor Bung Repair Kit by Dorman®. Why replace an exhaust pipe because of a corroded, stripped or damaged oxygen sensor bung? Save the pipe and replace the bung with this weld-on replacement. Standard O2 sensor...Repair-friendly solution - this oxygen sensor bung allows replacement of a damaged fitting without replacing the entire exhaust componentUniversal fitment - designed to accommodate standard oxygen sensor threads$9.61 - $11.61
- 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...$111.92 - $330.87
- AP Exhaust®608 Series Universal Fit Catalytic ConverterUniversal 608 Series Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Without Air Tube. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is...$104.68 - $415.87
- 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®Medium Duty Universal Fit Oval Body Catalytic ConverterUniversal Medium Duty Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. With Single Air Tube. With 1 Center O2 Sensor Port. Catalytic Converter Overall Length: 17"....$140.56
- AP Exhaust®Standard Duty Spun Body Universal Fit Round Body Catalytic ConverterUniversal Standard Duty Spun Body Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Today’s exhaust performance market...$101.22 - $250.00
- 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
- CATCO®Universal Fit Catalytic ConverterUniversal Catalytic Converter by CATCO®. Converter Configuration: Universal Fit. Without Air Tube. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the...$105.61 - $188.45
- Davico®OBDII Universal Fit Catalytic ConverterUniversal OBDII Catalytic Converter by Davico®. Converter Configuration: Universal Fit. This Universal fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat...$115.32 - $765.46
- 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