2003 Subaru Forester Emission Control Parts
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TRQ®O2 Oxygen SensorSubaru Forester 2003, 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$40.95 - $56.95Save: up to 5%$38.90 - $55.24 - Dorman®OE Solutions™ Vapor CanisterSubaru Forester 2.5L 2003, OE Solutions™ Vapor Canister by Dorman®. This vapor canister has been made to match the original equipment evap canister on certain vehicle years, makes and models, properly restoring emissions controls....Direct replacement - this evaporative emissions charcoal canister matches the function and performance of the original canister on specified vehiclesRestores performance - properly repairs issues with emissions controls to clear check engine light and pass inspection$63.71
- Standard®T Series PCV ValveSubaru Forester 2.5L 2003, T Series PCV 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 reputation for...Made with precision and quality in mindDesigned to meet your specific needs$12.19
- Beck Arnley®PCV ValveSubaru Forester X / XS 2003, PCV Valve by Beck Arnley®. Make sure your vehicle’s emission control system performs at its optimum level with top-of-the-line Beck Arnley replacement emission control parts. Designed to match OE (original...Designed to ensure reliable operation of your emission control systemDirect OE (original equipment) replacement$11.83
- Standard®Intermotor™ PCV ValveSubaru Forester 2.5L 2003, Intermotor™ PCV 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 reputation for...Made with precision and quality in mindDesigned to meet your specific needs$15.84
- WVE®PCV ValveSubaru Forester 2003, PCV Valve 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 emissions of...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$13.24
- Standard®Intermotor™ Vapor CanisterSubaru Forester 2003, Intermotor™ Vapor Canister by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...Made with precision and quality in mindDesigned to meet your specific needs$78.04
- Dorman®New Help™ PCV ValveSubaru Forester 2.5L 2003, New Help™ PCV Valve by Dorman®. Standard Replacement. Keep your vehicle’s emission control system in top-notch condition with superior Dorman replacement emission control parts. Manufactured from top-grade...Application specific - components designed to replace original components on certain vehiclesDurable materials - made to resist fluctuating under-hood temperatures to ensure longevity$12.88
- WVE®Vapor CanisterSubaru Forester 2003, Vapor Canister 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 emissions of...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$137.60
- Genuine®EGR ValveSubaru Forester Manufactured After January 01 2003, EGR 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...Made with precision and quality in mindDesigned to meet your specific needs$273.68
- Denso®Oxygen SensorSubaru Forester 2.5L 2003, Oxygen Sensor by Denso®. Position: Downstream. Make sure your engine runs efficiently and produces fewer emissions by replacing your malfunctioning fuel-ratio sensors with these top-notch products designed by...High quality plastic and/or steel constructionDirect replacement for a proper fit every time$74.10
- Denso®Air Fuel Ratio SensorSubaru Forester 2.5L 2003, 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 products...Designed to help reduce fuel consumption and harmful emissionsMade with the use of state-of-the-art sensor technologies$167.82
- Walker Products®Oxygen SensorSubaru Forester 2.5L 2003, 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...High quality at an affordable priceExpertly made from premium materials$59.80 - $212.11
- Dorman®OE Solutions™ Vapor Canister Vent ValveSubaru Forester 2.5L 2003, OE Solutions™ Vapor Canister Vent Valve by Dorman®. A malfunctioning vapor canister vent can cause the engine light to come on. This replacement valve is engineered of quality materials for durability to...Direct replacement - this vapor canister vent valve fits and functions like the original partQuality construction - manufactured from premium materials for a long service life$49.36
- Dorman®OE Solutions™ Vapor Canister Purge ValveSubaru Forester 2.5L 2003, OE Solutions™ Vapor Canister Purge Valve by Dorman®. Engineered for a perfect fit and plug-and-play installation, this vapor canister purge valve is a direct replacement for the original equipment purge...Direct replacement - this vapor canister purge valve fits and functions like original equipment to ensure proper function of your vehicle's evaporative emissions systemQuality construction - manufactured from premium materials for a long service life$89.89
- Bosch®Premium Narrow-band Oxygen SensorSubaru Forester 2.5L 2003, Premium Narrow-band Oxygen Sensor by Bosch®. Position: Downstream. A worn-out oxygen sensor can cause engine performance problems and shorten the life of the catalytic converter. Tune-up your vehicle with an...OE Identical ConnectorCompact Design$77.10
- Walker Products®Premium Oxygen SensorSubaru Forester 2.5L 2003, Premium Oxygen Sensor by Walker Products®. Position: Downstream. Location: B1S2 Sensor. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet or exceed all original...Improved Engine Response & PerformanceLower Emissions$67.34
- NTK®Oxygen SensorSubaru Forester 2.5L 2003, Oxygen Sensor by NTK®. Position: Downstream. Location: B1S2. Thimble type sensors feature a ceramic element that projects into the exhaust system and becomes electrically conductive at high temperature. The...Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement$64.99
- Genuine®Vapor Canister FilterSubaru Forester 2003, Vapor Canister Filter 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...Made with precision and quality in mindDesigned to meet your specific needs$65.58
- NTK®Air Fuel Ratio SensorSubaru Forester 2.5L 2003, 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...Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement$237.30
- WVE®Vapor Canister Vent SolenoidSubaru Forester 2.5L 2003, Vapor Canister Vent Solenoid 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...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$72.70
- Bosch®Narrow-band Oxygen SensorSubaru Forester 2.5L 2003, 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$49.09
- Standard®Intermotor™ Vapor Canister Vent SolenoidSubaru Forester 2003, Intermotor™ Vapor Canister Vent Solenoid 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$53.27
- Denso®Universal Fit Oxygen SensorSubaru Forester 2.5L 2003, Universal Fit Oxygen Sensor by Denso®. Position: Downstream. 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...Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants$50.67
- Bosch®Premium Wideband Oxygen SensorSubaru Forester 2.5L 2003, Premium 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 ratio. Wideband sensors...Detects the exact amount of unburned fuel in the exhaust streamOE connectors and OE-style harness for continuous wire from connector to sensor$245.64
- Standard®Intermotor™ Vapor Canister Purge SolenoidSubaru Forester 2003, Intermotor™ Vapor Canister Purge Solenoid 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$83.48 - $98.04
- WVE®Vapor Canister Purge SolenoidSubaru Forester 2003, Vapor Canister Purge Solenoid 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$117.87
- Walker Products®Premium Air Fuel Ratio SensorSubaru Forester 2.5L 2003, 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 meet or exceed all...Designed to meet or exceed OE specifications in form, fit and functionGlobal coverage for import and/or domestic applications$189.99
- Delphi®Oxygen SensorSubaru Forester X / XS 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...Resists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long lifePatented sensors construction and design$102.36 - $208.22
- Genuine®Oil SeparatorSubaru Forester 2003, Oil Separator by Genuine®. Location: Rear Of Engine. 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...Made with precision and quality in mindDesigned to meet your specific needs$37.68
Shop By Service Type
- EGR Valve Replacement
- Vent Oil Separator Replacement
- Oxygen Sensor Replacement
- Positive Crankcase Ventilation (PCV) Valve Hose Replacement
- Evaporation Vent Solenoid Replacement
- Canister Purge Solenoid Replacement
- Positive Crankcase Ventilation (PCV) Valve Replacement
- Fuel Evaporative Canister Replacement
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2003 Subaru Forester Models
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