REFAST-AUTOPARTS RE831866TS Upstream Downstream Air Fuel Level 2.0L O2 Sensor Oxygen

( Brand: Refast-autoparts ), ( Manufacturer Part Number: RE831866TS ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Custom Bundle: Yes ), ( Modified Item: No ), ( Type: Sensor ), ( Wire: 4, 4 ), ( Position: Upstream, Downstream ), ( Housing Material: Metal ), ( Thread Size: 18 X 1.5 Mm ), ( Universal Or Specific Fit: Specific ), ( Automotive Color / Finish: Steel ), ( Terminal Type: Blade ), ( Attachment Method: Screw-on ), ( Output Signal Range: V ), ( Features: Direct Fit )

Review REFAST AUTOPARTS Acura 2.0l Upstream Downstream Air Fuel Ratio O2 Sensor Oxygen fits X2 RSX 2002–2004

The REFAST Autoparts RE831866TS 02-04 Acura RSX 2.0L Upstream Downstream Air Fuel O2 Sensor is a crucial component of your vehicle's emissions system. This oxygen sensor is designed specifically for use in 2002 to 2004 Acura RSX models equipped with a 2.0L engine.

This sensor is an essential part of the exhaust gas recirculation (EGR) system and the closed-loop fuel control system. It monitors the amount of unburnt oxygen in the exhaust gases and sends this information to the engine control unit (ECU). Based on this data, the ECU adjusts the fuel-air mixture to ensure optimal combustion efficiency and reduce exhaust emissions.

The REFAST Autoparts RE831866TS O2 sensor is a high-performance, zirconia oxygen sensor. It features a ceramic sensor element that can detect even the smallest changes in oxygen content. The sensor is designed for both upstream and downstream applications, meaning it can be used before and after the catalytic converter.

This O2 sensor is engineered to deliver excellent durability and resistance to corrosion. It features a protective shield that helps prevent moisture and contaminants from reaching the sensor element, ensuring long-lasting performance. The sensor also has a wide operating temperature range, making it suitable for various driving conditions.

The REFAST Autoparts RE831866TS 02-04 Acura RSX 2.0L Upstream Downstream Air Fuel O2 Sensor is easy to install and replace. It comes with all necessary hardware, including new nuts and gaskets, to ensure a secure fit. The sensor also features a unique design that allows for easy connection to the wiring harness, eliminating the need for extensive routing or modification.

In summary, the REFAST Autoparts RE831866TS 02-04 Acura RSX 2.0L Upstream Downstream Air Fuel O2 Sensor is a high-performance, durable, and easy-to-install component designed to help improve your vehicle's fuel efficiency and reduce exhaust emissions. If you're looking to replace your old oxygen sensor or maintain your emissions system, this is an excellent choice.

The RE831866TS 02-04 Acura RSX 2.0L Upstream Downstream Air Fuel O2 Sensor is an essential component in maintaining the proper fuel-air mixture in your vehicle's engine. Here are some potential pros and cons of buying this part:

1. Improved Fuel Efficiency: A faulty oxygen sensor can lead to poor fuel economy. Replacing it with a new one can help restore your vehicle's fuel efficiency.

2. Better Engine Performance: A malfunctioning oxygen sensor can cause your engine to run rich or lean, leading to power loss and rough idling. A new sensor can help improve engine performance.

3. Longer Lifespan: High-quality aftermarket oxygen sensors, like the RE831866TS, can last longer than original equipment sensors.

4. Cost-Effective: Buying aftermarket oxygen sensors can be more cost-effective than purchasing original equipment parts from dealerships.

1. Installation Complexity: Installing oxygen sensors can be a complex process that requires specialized tools and knowledge. If you're not comfortable doing it yourself, you may need to pay for professional installation.

2. Potential for Error Codes: Installing a new oxygen sensor may not necessarily clear all related error codes. In some cases, additional diagnosis and repair may be required.

3. Quality Variability: Not all aftermarket oxygen sensors are created equal. Some may not meet the same quality standards as original equipment sensors.

The RE831866TS 02-04 Acura RSX 2.0L Upstream Downstream Air Fuel O2 Sensor is an essential component for maintaining optimal engine performance and fuel economy. While there are some potential cons to consider, such as installation complexity and quality variability, the pros, including improved fuel efficiency and engine performance, generally outweigh the cons. If you're comfortable with the installation process or plan on having it done by a professional, and you're looking for a cost-effective solution, then this aftermarket oxygen sensor is a worthy consideration.

If you're in the market for a new oxygen sensor for your Acura RSX, the RE831866TS is a solid choice. It offers good value for the price and can help improve your vehicle's fuel efficiency and engine performance. Just be sure to factor in the installation cost and consider your personal installation comfort level before making the purchase.

Details:

4 pare your new oxygen sensor to the old one. Aluminum-Oxide Trap Layer - Keeps silicone and lead outside the ceramic client through, preventing damage to platinum electrode. You can also use butt connectors. Use the diagnostic scanner/reader to clear code from vehicles computer.

8.Start the car. Fits 02-04 Acura RSX 2.0L Upstream Downstream Air Fuel Ratio o2 Sensor Oxygen X2 Compatibility. 6.Plug the electrical connections back in. Double Protection Cover - Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone lead poisoning.

Stainless Steel Housing - Resists corrosion and contamination with a rugged, watertight body. The majority of oxygen sensors will take an SAE 7/8 inch 2.2 cm wrench. Use a flat tip screwdriver to push in the tabs and pull connection apart. 2.Disconnect the electrical connection on oxygen sensor.

Use heat sensitive shrink tape to seal the connections. 3.Unscrew the oxygen sensor off exhaust pipe using either an open-end wrench or a special socket made to remove it. Do not over tighten the sensor as you might strip threads. 2002 2004 Acura RSX 2.0L 2002 2005 Honda Civic 2.0L.

The images shown are not the actual item and for your reference only. Screw it in place clockwise and snug down with the socket or open-end wrench. WHO to install an oxygen sensor. Cut off the old connector from bad oxygen sensor, strip wires and solder to new sensor.

1.Locate the oxygen sensor on your vehicle by looking for a part that looks like spark plug sticks out from exhaust pipe. Follow manufacturers instructions to know which wires tie together. You should notice an immediate improvement. 7.Turn on the ignition key, but do not start your vehicle.

Where is the oxygen sensor in your vehicle. It will have an electrical connection attached to it. 5.Reverse the steps used in removing oxygen sensor and install new part.Add a small amount of anti-seize to threads. Porous PTFE Filter - Allows atmospheric oxygen to enter the sensor without permitting water or engine contaminants seep into casing.

New List Item.

part #: re831866ts price

• $38.66

specifications acrasensor:

• for models: X2, Rsx
• for makes: Acura
• for years: 2002-2004
• brand: Refast-autoparts
• mpn: Re831866ts
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• custom bundle: Yes
• modified item: No
• type: Sensor
• wire: 4, 4
• position: Upstream, Downstream
• housing material: Metal
• thread size: 18 X 1.5 Mm
• universal or specific fit: Specific
• automotive color / finish: Steel
• terminal type: Blade
• attachment method: Screw-on
• output signal range: V
• features: Direct Fit

offer acrasensor:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: May 8, 2026
• quantity: 10

payments acrasensor:

• other
• credit card: Visa
• wallet: Apple-pay

seller acrasensor:

• rating: 99.4%
• city: Ontario, California
• # reviews: 1428

shipping acrasensor:

• class: Economy
• transit: 5-11 Days
• service: FedEx Ground Economy
• carrier: FedEx
• type: Fixed
• cost: $0.00

returns acrasensor:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

general acrasensor:

• Car Truck Parts Accessories > Air Fuel Delivery > Air Intake Fuel Sensors
• condition: New

Refast-autoparts RE831866TS Is Similar To:

• Refast-autoparts Re827011ts 2pcs For 02-2004 Acura Rsx 2.0l Air Fuel Ratio O2 Sensor Upstream And Downstream (68.5% similar) The images shown are not the actual item and for your reference only. Aluminum-oxide trap layer - keeps silicone and lead outside the ceramic client through, preventing damage to platinum electrode. The majority of oxygen sensors will take an sae 7/8 inch 2.2 cm wrench. Cut off the old connector ...(May 7th, 2026)