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Important: Verify connector shape and pins match your original part.
4-Piece O2 Sensor Set
Fits Mercedes Benz C300 E350 CLK350 (W204/W211)
Replaces OE: 234-5091, 234-4881
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
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$90.95
-
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
|
|---|---|---|---|
|
2006-2007
|
Mercedes-Benz
|
C230
|
2.5L V6
|
|
2006-2007
|
Mercedes-Benz
|
C280
|
3.0L V6
|
|
2006-2007
|
Mercedes-Benz
|
C350
|
3.5L V6
|
|
2006-2009
|
Mercedes-Benz
|
CLK350
|
3.5L V6
|
|
2007-2009
|
Mercedes-Benz
|
CLK550
|
5.5L V8
|
|
2007-2009
|
Mercedes-Benz
|
CLK63 AMG
|
6.3L V8
|
|
2009-2012
|
Mercedes-Benz
|
SL63 AMG
|
6.3L V8
|
|
2006-2008
|
Mercedes-Benz
|
SLK280
|
3.0L V6
|
|
2009-2010
|
Mercedes-Benz
|
SLK300
|
3.0L V6
|
|
2005-2010
|
Mercedes-Benz
|
SLK350
|
3.5L V6
|
Product Specifications
Warranty & Support: 2 Years + 24/7 Technical Support
|
Item
|
Specification
|
|---|---|
|
Core Part Number
|
234-5091
Interchange: 234 5091, 2345091, 0035427118, 003 542 71 18, 17019, 5135667AA |
|
Position
|
Exhaust System, Upstream (Pre-Catalytic Converter)
|
|
Key Parameters
|
- Sensor Type: Heated Wide-Band / Air-Fuel Ratio Sensor
- Wire Configuration: 5-Wire - Connector Gender: Male - Thread Diameter: 0.711 IN - Wiring Harness Length: 31.50 IN - Fit Type: Specific |
|
Core Part Number
|
234-4881
Interchange: 2344881, 234 4881, 0045420718, 0035428218, 0065423918, 56029084AA, 7B0906262 |
|
Position
|
Exhaust System, Downstream (Post-Catalytic Converter)
|
|
Key Parameters
|
- Sensor Type: Heated Oxygen Sensor (Narrow-Band)
- Wire Configuration: 4-Wire - Connector Gender: Female - Mounting Type: Threaded - Thread Diameter: 0.708 IN - Wiring Harness Length: 12.40 IN - Fit Type: Specific |
Package Content :
4Pcs (2*234-5091 Upstream+2*234-4881 Downstream) Oxygen Sensor