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Important: Verify connector shape and pins match your original part.
Upstream Air Fuel Ratio Sensor
Fits Toyota 4Runner Highlander Lexus IS GS
Replaces OE: 234-9143
Resolves Symptoms
- Check Engine Light (P0420/P0171)
- Rough Idle & Hesitation
- Poor Fuel Economy (MPG)
- Failed Emissions Inspection
Estimated Delivery
Free
Ordered
Nov 12
Prepared
Nov 12-Nov 13
Delivered
Nov 26-Dec 4
Requires overseas shipment. Upgrade to expedited shipping at checkout if urgent.
2-Year Warranty
🛡️ Quality Coverage: Protects against any manufacturing defects for 2 full years.
🔄 Free Replacement: Brand-new replacement for free if quality issues occur.
30-Day Return & Refund
📦 Free Returns: Zero costs to you if the product has quality issues.
💰 Full Refunds: 100% money-back guarantee within 30 days for defective items.
5-Step Fitment Guide
- Check OE: Find original part no. & plug.
- Compare Photos: Match plug with our images.
- Verify YMM: Confirm via fitment tool.
- Review Specs: Check pins & dimensions.
- Purchase: Buy confidently once matched!
Review Rewards
Share an install photo & review to unlock:
- Under $50 Orders: 3% Off Next Order
- $50+ Orders: 5% Direct Cashback
*Email screenshot of your review to support to claim.
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$52.95
-
No hidden fees: What you see is what you pay.
-
Restore performance: Fix issues and drive with confidence.
Check Engine Light? Find Your Symptoms
🌬️ O2 & A/F Sensors
- P0134No Activity Detected
- P0135Heater Circuit Malfunction
- P0137/38Circuit Low/High Voltage
- P2195Signal Stuck Lean
- P0030/31Heater Control Circuit
⛽ Fuel & Air Mixture
- P0171/74System Too Lean
- P0172System Too Rich
- P2096Post-Catalyst Trim Too Lean
- P0087Fuel Rail Pressure Low
- P0201-04Injector Circuit Open
♻️ Catalytic Converters
- P0420Efficiency Below Threshold (B1)
- P0430Efficiency Below Threshold (B2)
⚡ Ignition / Misfires
- P0300Random Misfire
- P0301-06Cylinder-Specific Misfire
Automotive-Leader Sensors
Vehicle Compatible
|
Year
|
Make
|
Model
|
|---|---|---|
|
2015-2024
|
Toyota
|
4Runner
|
|
2020-2022
|
Toyota
|
Highlander
|
|
2016-2020
|
Lexus
|
GS F
|
|
2014-2020
|
Lexus
|
GS350
|
|
2015-2018
|
Lexus
|
GS450h
|
|
2014-2015
|
Lexus
|
IS250
|
|
2016-2024
|
Lexus
|
IS300
|
|
2014-2024
|
Lexus
|
IS350
|
|
2022-2024
|
Lexus
|
IS500
|
|
2018-2024
|
Lexus
|
LC500
|
|
2014-2017
|
Lexus
|
LS460
|
|
2015-2017
|
Lexus
|
NX200t
|
|
2018-2021
|
Lexus
|
NX300
|
|
2015-2024
|
Lexus
|
RC F
|
|
2016-2024
|
Lexus
|
RC300
|
|
2015-2024
|
Lexus
|
RC350
|
Product Specifications
Warranty & Support: 2 Years + Pre-sale Load Test + 24/7 Technical Support
|
Item
|
Specification
|
|---|---|
|
Core Part Number
|
234-9143
Interchange: 2349143, 234 9143, 894670E270, 8946711050, 8946724020, 8946730080, 8946735120, 8946735130, 8946750080, 8946753070, 8946778010 |
|
Position
|
Exhaust System, Upstream, Front (Pre-Catalytic Converter)
|
|
Key Parameters
|
- Sensor Type: Heated Wide-Band Oxygen Sensor
- Wire Configuration: 4-Wire - Wire Harness Length: 9.92 in - Grade Type: Regular - Fit Type: Specific |
Package Content :
1PCS 234-9143 Upstream Oxygen Sensor