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2-Piece O2 Sensor Upstream & Downstream
Fits Mazda 3 2.3L (2010-2013)
Replaces OE: 234-5042, 234-4391
Resolves Symptoms
- Check Engine Light (P0420/P0171)
- Rough Idle & Hesitation
- Poor Fuel Economy (MPG)
- Failed Emissions Inspection
Estimated Delivery
Free
Ordered
Sep 23
Prepared
Sep 23-Sep 24
Delivered
Sep 25-Sep 28
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
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- Under $50 Orders: 3% Off Next Order
- $50+ Orders: 5% Direct Cashback
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$53.95
-
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
|
|---|---|---|---|
|
2013
|
Mazda
|
3 Grand Touring
|
2.3L (Turbo)
|
|
2013
|
Mazda
|
3 Mazdaspeed
|
2.3L (Turbo)
|
|
2012
|
Mazda
|
3 Grand Touring
|
2.3L (Turbo)
|
|
2012
|
Mazda
|
3 Mazdaspeed
|
2.3L (Turbo)
|
|
2011
|
Mazda
|
3 Grand Touring
|
2.3L (Turbo)
|
|
2011
|
Mazda
|
3 Mazdaspeed
|
2.3L (Turbo)
|
|
2010
|
Mazda
|
3 Grand Touring
|
2.3L (Turbo)
|
|
2010
|
Mazda
|
3 Mazdaspeed
|
2.3L (Turbo)
|
Product Specifications
Warranty & Support: 2 Years + 24/7 Technical Support
|
Item
|
Specification
|
|---|---|
|
Core Part Number
|
234-5042
Interchange: 2345042, L3CE-18-8G1, L3CE188G1, L3M6-18-8G1D, L37J-18-8G1, 24393, 250-25066 |
|
Position
|
Exhaust System, Upstream (Pre-Catalytic Converter)
|
|
Key Parameters
|
- Type: Heated Oxygen Sensor
- Wire Quantity: 5-Wire - Connector Gender: Male - Thread Diameter: 0.711 IN - Wiring Harness Length: 29.53 IN |
|
Item
|
Specification
|
|---|---|
|
Core Part Number
|
234-4391
Interchange: 2344391, 234 4391, L34B18861A, L34B18861B, 250-24795, 18073, 350-34507, 24442 |
|
Position
|
Exhaust System, Downstream (Post-Catalytic Converter)
|
|
Key Parameters
|
- Type: Heated Oxygen Sensor
- Wire Quantity: 4-Wire - Connector Gender: Female - Thread Diameter: 0.708 IN - Wiring Harness Length: 14.17 IN |
Package Content :
2Pcs (1*234-5042 Upstream+1*234-4391 Downstream) Oxygen Sensor