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Important: Verify connector shape and pins match your original part.
2-Piece Oxygen Sensor
Fits Mazda 3 Mazda 5 2.0L 2.3L (04-07)
Replaces OE: 234-4390, 234-4396
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
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- Under $50 Orders: 3% Off Next Order
- $50+ Orders: 5% Direct Cashback
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$39.95
-
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
|
Note
|
|---|---|---|---|---|
|
2007
|
Mazda
|
5 Grand Touring Mini Passenger Van 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated
|
|
2006-2007
|
Mazda
|
5 Sport Mini Passenger Van 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated
|
|
2006-2007
|
Mazda
|
5 Touring Mini Passenger Van 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated
|
|
2004-2005
|
Mazda
|
3 GT Sedan 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated
|
|
2004-2005
|
Mazda
|
3 S Sedan 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated
|
|
2004-2005
|
Mazda
|
3 S Hatchback 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated
|
|
2005
|
Mazda
|
3 SP23 Hatchback 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated
|
|
2005
|
Mazda
|
3 GT Hatchback 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated
|
|
2005
|
Mazda
|
3 SP23 Sedan 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated
|
|
2004
|
Mazda
|
3 GS Sedan 4-Door
|
2.0L L4
|
2000CC, 122Cu. In., GAS, DOHC, Naturally Aspirated
|
|
2004-2005
|
Mazda
|
3 i Sedan 4-Door
|
2.0L L4
|
2000CC, 122Cu. In., GAS, DOHC, Naturally Aspirated, Canada
|
|
2004-2005
|
Mazda
|
3 GX Sedan 4-Door
|
2.0L L4
|
2000CC, 122Cu. In., GAS, DOHC, Naturally Aspirated, Canada
|
|
2004-2005
|
Mazda
|
3 GS Hatchback 4-Door
|
2.0L L4
|
2000CC, 122Cu. In., GAS, DOHC, Naturally Aspirated, Canada
|
|
2005
|
Mazda
|
3 GS Sedan 4-Door
|
2.0L L4
|
2000CC, 122Cu. In., GAS, DOHC, Naturally Aspirated, Canada
|
|
2004
|
Mazda
|
3 GT Hatchback 4-Door
|
2.3L L4
|
2260CC, GAS, DOHC, Naturally Aspirated, Canada
|
Product Specifications
Warranty & Support: 2 Years + Pre-sale Load Test + 24/7 Technical Support
|
Item
|
Specification
|
|---|---|
|
Core Part Number
|
234-4396
Interchange: 234-4396, 2344396, LF66-18-861A, LF66-18-861B-9U, LF66-18-861C, LF66-18-861C-9U, LF66-18-861B, L3A118861A, L3A118861B, L3A118861C, L3A118861C9U, L3K218861, L3K218861A, L3K218861B, L3K218861B9U, LF6818861A, LF6818861B, LF6818861B9U, LF6818861C, LF6818861D, LF6818861D9U |
|
Position
|
Exhaust System, Upstream, Front (Pre-Catalytic Converter)
|
|
Key Parameters
|
- Sensor Type: Heated Oxygen Sensor
- Wire Configuration: 4-Wire - Wire Harness Length: 18.11 in. - Mounting Type: Threaded - Connector Gender: Female - Thread Diameter: 0.708 in. - Grade Type: Regular - Fit Type: Specific |
|
Core Part Number
|
234-4390
Interchange: 234-4390, 2344390, 2133889, 24232, 13770, L3A1-18-861A, L3A1-18-861B, L3A1-18-861C, L3A1-18-861C9U, L3K2-18-861, L3K2-18-861A, L3K2-18-861B, L3K2-18-861B-9U, LF6818861A, LF68-18-861B, LF68-18-861B-9U, LF68-18-861C, LF68-18-861D, LF68-18-861D-9U, L3K218861A, L3K218861B, LF6618861B9U, LF6618861C, 2133888, 13769, 24234, 753374, REA2013, SG1662
|
|
Position
|
Exhaust System, Downstream, Rear (Post-Catalytic Converter)
|
|
Key Parameters
|
- Sensor Type: Heated Oxygen Sensor
- Wire Configuration: 4-Wire - Wire Harness Length: 31.10 in. - Mounting Type: Threaded - Connector Gender: Female - Thread Diameter: 0.711 in. - Grade Type: Regular - Fit Type: Specific |