1991 Toyota 4Runner Emission Control Parts
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TRQ®Upstream O2 Oxygen SensorToyota 4Runner 1991, 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$35.95Save: $1.08 (3%)$34.87 - WVE®EGR ValveToyota 4Runner Gas 1991, EGR 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$153.36 - $563.11
- Beck Arnley®PCV ValveToyota 4Runner Gas 1991, 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$3.94 - $4.24
- Denso®Oxygen SensorToyota 4Runner Gas 1991, Oxygen 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 by...High quality plastic and/or steel constructionDirect replacement for a proper fit every time$54.09 - $55.72
- Walker Products®Oxygen SensorToyota 4Runner Gas 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...High quality at an affordable priceExpertly made from premium materials$41.47
- Bosch®Premium Narrow-band Oxygen SensorToyota 4Runner Gas 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...OE Identical ConnectorCompact Design$43.27
- Bosch®Narrow-band Oxygen SensorToyota 4Runner Gas 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$46.87
- NTK®Oxygen SensorToyota 4Runner 2.4L / 3.0L Gas 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...Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement$36.05
- Walker Products®Premium Oxygen SensorToyota 4Runner Gas 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...Improved Engine Response & PerformanceLower Emissions$54.66
- Denso®Universal Fit Oxygen SensorToyota 4Runner 2.4L / 3.0L Gas 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...Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants$51.72
- Standard®Intermotor™ PCV ValveToyota 4Runner 2.4L / 3.0L Gas 1991, Intermotor™ PCV Valve by Standard®. No Connector. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and...Made with precision and quality in mindDesigned to meet your specific needs$4.62
- WVE®PCV ValveToyota 4Runner Gas 1991, 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$3.73 - $4.02
- Genuine®EGR ValveToyota 4Runner 3.0L Gas Japan Built 1991, 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 premium...Made with precision and quality in mindDesigned to meet your specific needs$439.96
- Standard®Intermotor™ EGR ValveToyota 4Runner Gas 1991, Intermotor™ EGR 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$167.69 - $253.91
- Genuine®EGR Valve Vacuum ModulatorToyota 4Runner Gas 1991, EGR Valve Vacuum Modulator 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...Made with precision and quality in mindDesigned to meet your specific needs$117.90 - $117.91
- GPD®Exhaust Gas Temperature (EGT) SensorToyota 4Runner 2.4L / 3.0L Gas 1991, Exhaust Gas Temperature (EGT) Sensor by GPD®. The EGR pressure sensor works with the EGR valve to regulate the pressure of the EGR system. If pressure is low, the EGR valve will increase flow and...Designed to meet/exceed OE fit, form and function100% Tested for durability and performance$83.56
- Standard®Intermotor™ EGR Vacuum Modulator and ValveToyota 4Runner Gas 1991, Intermotor™ EGR Vacuum Modulator and Valve by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...Made with precision and quality in mindDesigned to meet your specific needs$81.49 - $142.45
- Genuine®EGR Vacuum ValveToyota 4Runner VZN13 Body Code 4WD 3.0L Gas 1991, EGR Vacuum 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...Made with precision and quality in mindDesigned to meet your specific needs$116.52
- Genuine®EGR Valve Temperature SensorToyota 4Runner Gas 1991, EGR Valve Temperature Sensor 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...Made with precision and quality in mindDesigned to meet your specific needs$252.56
- Standard®Intermotor™ EGR Valve Control SolenoidToyota 4Runner 3.0L Gas 1991, Intermotor™ EGR Valve Control Solenoid by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...Made with precision and quality in mindDesigned to meet your specific needs$98.94
- WVE®EGR Vacuum ModulatorToyota 4Runner Gas 1991, EGR Vacuum Modulator 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$73.23 - $177.28
- Genuine®PCV HoseToyota 4Runner Gas 1991, PCV 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 using...Made with precision and quality in mindDesigned to meet your specific needs$31.37 - $38.40
- Genuine®PCV Valve HoseToyota 4Runner Gas 1991, PCV Valve 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 using...Made with precision and quality in mindDesigned to meet your specific needs$21.63 - $27.73
- Genuine®PCV Valve GrommetToyota 4Runner 3.0L Gas 1991, PCV Valve Grommet 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...Made with precision and quality in mindDesigned to meet your specific needs$8.46
- Dorman®OE Solutions™ Evaporative Emissions Vacuum Solenoid ValveToyota 4Runner 3.0L Gas 1991, OE Solutions™ Evaporative Emissions Vacuum Solenoid Valve by Dorman®. Number 1. Engineered for a perfect fit and plug-and-play installation, this vapor canister purge valve is a direct replacement for the...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$53.32
- Dorman®Help™ PCV Valve GrommetToyota 4Runner Gas 1991, Help™ PCV Valve Grommet by Dorman®. Location: PCV to Valve Cover. This PCV valve grommet is designed to match the fit and function of the original grommet on specified vehicles, and is engineered for...Direct replacement - this PCV valve grommet is designed to match the fit and function of the original grommet on specified vehiclesRestores functionality - this grommet is made to fit and fully restore part functionality after the original grommet fails$2.51 - $3.08
- Standard®Intermotor™ PCV Valve GrommetToyota 4Runner 2.4L / 3.0L Gas 1991, Intermotor™ PCV Valve Grommet by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...Made with precision and quality in mindDesigned to meet your specific needs$2.92
- Beck Arnley®PCV Valve GrommetToyota 4Runner 2.4L / 3.0L Gas 1991, PCV Valve Grommet by Beck Arnley®. When investing in this superior product by Beck Arnley, expect to get the exact OEM look, function, and fit. The product was developed to stringent factory...Made of durable long life rubber materialSeals seepage between the valve cover and PCV valve$2.82
- Dorman®Help™ Oxygen Sensor GasketToyota 4Runner 1991, Help™ Oxygen Sensor Gasket by Dorman®. Easily and affordably restore the engine to safe, proper functioning with Dorman's Oxygen Sensor Gasket. It s sold separately, enabling you to replace only the failed...Resilient against fluctuations in under hood temperaturesHigh heat resistance$4.20
- Genuine®EGR Valve Spacer Plate GasketToyota 4Runner 3.0L Gas 1991, EGR Valve Spacer Plate Gasket 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$8.16
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1991 Toyota 4Runner Emission Control Reviews
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Great Catalytic Converter
MagnaFlow® 23884 - Standard Direct Fit Catalytic ConverterPosted by William J (Mesa, AZ) / October 15, 20131995 Toyota 4Runner
1991 Toyota 4Runner Models
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