XWQHJWAUTO PARTSXWQHJWUPSTREAM & DOWNSTREAM O2 SENSOR SETOXYGEN SENSOR 234-4012 & 234-4018
High quality 100% brand new direct-fit replacement oxygen sensor set — 2pcs 234-4012 & 2pcs 234-4018, built for smooth operation, accurate fuel trim and dependable performance.
Warranty: YES Condition: New Fast Shipping 4 Sensors Included 0.1-0.9VOutput Voltage Range<15sResponse Time T90930°CMax Exhaust TempEXHAUSTECU SIGNAL// COMMON PROBLEMS SOLVEDO2 Sensor Help You Solve
A failing oxygen sensor can cause a range of driveability and emissions issues. Replacing it restores performance and efficiency.
⚠️Check-Engine Light
Illuminated check-engine light often points to a faulty O2 sensor. Our sensor clears the code and keeps it off.
🔑Hard Engine Starts
Difficulty starting or rough idle? A worn sensor throws off the air-fuel mixture. Replace it for smooth starts.
💨High Exhaust Emissions
Excessive smoke or failed emissions tests can result from an aged O2 sensor. Restore clean combustion.
⛽Higher Fuel Consumption
When the sensor degrades, the ECU over-fuels. Our sensor helps regain optimal fuel economy.
// ADVANCED TECHSmarter Sensing
Engineered with premium materials and precision manufacturing for reliable, long-lasting performance.
Premium Chip & Platinum Electrode
Realizes accurate signal processing and stable wireless transmission, ensuring precise air-fuel ratio response to the ECU.
Precision Laser Welding
Provides high-temperature resistance and reliable sealing protection, preventing leakage and extending service life.
Stainless-Steel Protective Housing
Forms firm sealing structure for long-term durable performance, shielding internal components from harsh exhaust gases.
// MATERIAL OVERVIEWPrecision Parts
Every component is selected for durability, accuracy, and reliable performance in extreme conditions.
Stainless Steel NutFirm fasteningCeramic HeaterFast pre-heat responseStainless-Steel CoverHeat-resistant protectionPremium ChipAccurate signal processing, stable transmissionPrecision ThreadsSecure connection & reliable fitting
NOTE: Images for reference only. Refer to actual item for each model.
// ROBUST & PRECISERobust & Precise Sensing
Engineered to withstand extreme temperatures and deliver a long service life.
≥100,000 Miles Service Lifespan
Superior service life compared to conventional sensors.
-40°C to +900°C Temp Resistance
Consistent operation in tough working conditions.
NOTE: Images for reference only. Refer to actual item for each model.
// WHY CHOOSE USWhy Choose Us?
Precision engineering and quality construction make our O2 sensor a reliable replacement.
Precision Design
Accurate dimensional specifications
Quality Construction
Superior wear-resistant performance
Quick Install
Direct fit for your vehicle
// SENSOR LOCATIONSensor Location Reference
Understand where upstream and downstream sensors are positioned in your exhaust system.
Upstream Sensor
Before the catalytic converter. Also referred to as Bank 1 Sensor 1 or Bank 2 Sensor 1.
Bank 1 Sensor 1 — Before Catalytic Converter
Bank 2 Sensor 1 — Before Catalytic ConverterDownstream Sensor
After the catalytic converter. Also referred to as Bank 1 Sensor 2 or Bank 2 Sensor 2.
Bank 1 Sensor 2 — After Catalytic Converter
Bank 2 Sensor 2 — After Catalytic Converter
Left Side and Right Side configurations may apply depending on vehicle layout. Always verify with your vehicle part number.
// PART NUMBERSPart Numbers
Please confirm your vehicle part number matches before ordering.
Part Number:234-4012, 234-4018Other Part Number:2344012, 2344018, 234 4012, 234 4018Manufacturer Part Number:19178918, 19178930, 19178937, 19178961, 25315809, 8251653130, 8253121880, 8253122000, 8253252660, 96335927, 19178116, 19178935, 19178945, 19178958, 25312194, 25312201, 25312211, 25315373Interchange Part Number:234-4012, 234-4018, 2344012, 2344018, 19178918, 19178930, 19178937, 19178961, 25315809, 96335927, 19178116, 19178935, 19178945, 19178958, 25312194, 25312201, 25312211, 25315373Support Part Number:234-4012, 234-4018, 2344012, 2344018, 19178918, 19178930, 19178937, 19178961, 25315809, 8251653130, 8253121880, 8253122000, 8253252660, 96335927, 19178116, 19178935, 19178945, 19178958, 25312194, 25312201, 25312211, 25315373// HOW TO CHOOSEHow To Choose The Correct Part
Not sure which one fits? Follow these three steps.
Check the part numbers Make sure your vehicle part number matches the numbers listed above.Compare the picture Confirm our product looks the same as your old one by comparing the photos.Still unsure? Contact us Feel free to contact us via before ordering — we\'re happy to help.// IMPORTANT NOTESImportant Notes
Please read carefully before purchase.
Replacement / Return: Please CONTACT US before returning any item.Please purchase our product according to your vehicle model and vehicle part number.Please check our photos and make sure our product is the same as your old one.Anything else not mentioned is not included, besides the pictures shown.The packaging box will be replaced according to the product specifications for shipment.// PACKAGE INCLUDEDPackage Included
Everything you receive with this order.
4×Oxygen Sensor Set — 2pcs 234-4012 & 2pcs 234-4018
As the pictures shown — total 4 pieces (2 of each part number).
Questions About Fitment?
You will get what you see in the pictures. Please ensure the product is helpful for you before purchase. If there is any question or problem, feel free to contact us via .
CONTACT US ON © Oxygen Sensor 234-4012 / 234-4018 — Upstream & Downstream Set. Compatibility list is for reference only. NOTE: Images for reference only. Refer to actual item for each model.
On Oct 9, 2026 at 21:23:00 PDT, seller added the following information:
