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Important: Verify connector shape and pins match your original part.
2-Piece Upstream O2 Sensor
Fits Buick Lucerne Cadillac DTS 4.6L V8
Replaces OE: 234-4339
Resolves Symptoms
- Check Engine Light (P0420/P0171)
- Rough Idle & Hesitation
- Poor Fuel Economy (MPG)
- Failed Emissions Inspection
Estimated Delivery
Free
Ordered
Oct 29
Prepared
Oct 29-Oct 30
Delivered
Nov 12-Nov 20
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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$36.95
-
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
|
|---|---|---|---|
|
2006-2011
|
Buick
|
Lucerne (incl. Super, CXL, CXS, etc.)
|
4.6L V8
|
|
2006-2007
|
Buick
|
Rainier
|
5.3L V8
|
|
2006-2011
|
Cadillac
|
DTS (incl. Base, L, Platinum, etc.)
|
4.6L V8
|
|
2006-2009
|
Chevrolet
|
Trailblazer SS
|
6.0L V8
|
|
2006-2009
|
Chevrolet
|
Trailblazer (incl. LT, LS, Base, EXT, etc.)
|
5.3L V8
|
|
2006
|
Chevrolet
|
SSR
|
6.0L V8
|
|
2006-2009
|
GMC
|
Envoy Denali
|
5.3L V8
|
|
2006-2009
|
Saab
|
9-7x (incl. 5.3i, Aero)
|
5.3L V8, 6.0L V8
|
|
2006
|
Isuzu
|
Ascender
|
5.3L V8
|
Product Specifications
Warranty & Support: 2 Years + 24/7 Technical Support
|
Item
|
Specification
|
|---|---|
|
Core Part Number
|
234-4339
Interchange: 2344339, 234 4339, 12590749, 12597990, 12604913, 8126049130, 25024704, 2133536, 2133545, 2133839, 5S8158, ES20000 |
|
Position
|
Exhaust System, Upstream & Downstream
|
|
Key Parameters
|
- Connector Gender: Female
- Mounting Type: Threaded - Sensor Type: Heated - Thread Diameter: 0.708 IN - Wire Quantity: 4 Wires - Wiring Harness Length: 15.75 in - Package Content: 2 Pcs |
Package Content :
2Pcs 234-4339 Oxygen Sensor