Skip to product information
4-Piece O2 Sensor
Fits Toyota 4Runner 4.7L V8 (2003-2004)
Replaces OE: 234-4138, 234-4260, 234-4261
Resolves Symptoms:
- Persistent Check Engine Light
- Rough Idle
- Poor Fuel Economy
- Lean Hesitation
Delivery
Free
Arrives: Sep 20 - Sep 23
Dispatched quickly from local US warehouses.
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 a screenshot of your review to support to claim.
Check if your car is compatible
This helps guarantee fitment of parts.
⏳ Loading fitment data...
$103.95
-
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
|
Engine/Displacement
|
|---|---|---|---|
|
2003
|
Lexus
|
GX470 Base
|
4.7L
|
|
2003
|
Toyota
|
4Runner Limited
|
4.7L
|
|
2003
|
Toyota
|
4Runner Sport
|
4.7L
|
|
2003
|
Toyota
|
4Runner SR5
|
4.7L
|
|
2004
|
Lexus
|
GX470 Base
|
4.7L
|
|
2004
|
Toyota
|
4Runner Limited
|
4.7L
|
|
2004
|
Toyota
|
4Runner Sport
|
4.7L
|
|
2004
|
Toyota
|
4Runner SR5
|
4.7L
|
Product Specifications
Warranty & Support: 2 Years + Pre-sale Load Test + 24/7 Technical Support
|
Item
|
Specification
|
|---|---|
|
Core Part Number
|
234-4138
Interchange: 2344138, 234 4138, 8946550120, 8946560150, 8946560430 |
|
Position
|
Exhaust System, Upstream (Pre-Catalytic Converter)
|
|
Key Parameters
|
- Sensor Type: Heated Oxygen Sensor
- Wire Configuration: 4-Wire - Connector Gender: Male - Wire Harness Length: 8.27 IN - Thread Diameter: 0.708 IN - Mounting Type: Threaded - Grade Type: Regular - Fit Type: Specific |
|
Core Part Number
|
234-4260
Interchange: 2344260, 234 4260, 8946504300, 8946504320, 8946504340, 8946504350, 8946506200, 8946506250, 8946507050, 8946507070, 894650C160, 894650C170, 894650C180, 894650D040, 894650T030, 8946533360 |
|
Position
|
Exhaust System, Downstream (Post-Catalytic Converter)
|
|
Key Parameters
|
- Sensor Type: Heated Oxygen Sensor
- Wire Configuration: 4-Wire - Connector Gender: Male - Wire Harness Length: 9.45 IN - Thread Diameter: 0.708 IN - Mounting Type: Threaded - Grade Type: Regular - Fit Type: Specific |
|
Core Part Number
|
234-4261
Interchange: 2344261, 234 4261, 8946504270, 8946504290, 8946506060, 8946506140, 894650R020, 8946533250, 8946533380, 8946535580, 8946535670, 8946535690, 8946542150, 8946560200 |
|
Position
|
Exhaust System, Downstream (Post-Catalytic Converter)
|
|
Key Parameters
|
- Sensor Type: Heated Oxygen Sensor
- Wire Configuration: 4-Wire - Connector Gender: Male - Wire Harness Length: 10.24 IN - Thread Diameter: 0.708 IN - Mounting Type: Threaded - Grade Type: Regular - Fit Type: Specific |
Package Content :
4PCS (2*234-4138 Upstream + 1*234-4260 Downstream + 1*234-4261 Downstream) O2 Sensor