4Pcs O2 Sensor Set for BMW 545i 645Ci 4.4L V8 (2004-2005 Manual Trans) 234-5133 234-5134 234-4470
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A Guide for Users Without Repair Experience
1. When your vehicle malfunctions, use a CBD to scan and identify the fault codes (if you're unsure how to scan or interpret the codes, visit our blog for guidance).
2. Identify the faulty component based on the diagnostic code and remove it.
3. Select your vehicle's year, model, and brand directly from the search panel below, or search by the part number on the component to verify compatibility.
4. After selecting, click “Search.” A green result confirms the part is compatible. If unsure, click the result below to view deta
🛡️ Four Major Safeguards
Automotive-Leader Sensors
Vehicle Compatible
|
Year
|
Make
|
Model
|
Engine/Displacement
|
|---|---|---|---|
|
2004-2005
|
BMW
|
545I
|
4.4L V8
|
|
2004-2005
|
BMW
|
645CI
|
4.4L V8
|
Product Specifications
|
Item
|
Specification
|
|---|---|
|
Core Part Number
|
234-5133
Interchange: 11787512983, 11787516149, 11787516150, 11787521705 |
|
Position
|
Exhaust System, Upstream (Pre-Catalytic Converter)
|
|
Key Parameters
|
- Connector Gender: Male
- Sensor Type: Heated - Thread Diameter: 0.711 IN - Wire Quantity: 5 Wires - Wiring Harness Length: 24.37 IN - Grade: Regular - Fit Type: Specific |
|
Core Part Number
|
234-5134
Interchange: 11787515826, 11787515827, 11787529980, 11787530736, 24321, 17255, ES10921 |
|
Position
|
Exhaust System, Upstream (Pre-Catalytic Converter)
|
|
Key Parameters
|
- Connector Gender: Male
- Sensor Type: Heated - Thread Diameter: 0.711 IN - Wire Quantity: 5 Wires - Wiring Harness Length: 40.67 IN - Grade: Regular - Fit Type: Specific |
|
Core Part Number
|
234-4470
Interchange: 11787506539, 11787512002, 11787512567, 11787512973, 11787836451, 2344471, 25627, 15682 |
|
Position
|
Exhaust System, Downstream (Post-Catalytic Converter)
|
|
Key Parameters
|
- Connector Gender: Male
- Mounting Type: Threaded - Sensor Type: Heated - Thread Diameter: 0.708 IN - Wire Quantity: 4 Wires - Wiring Harness Length: 16.73 IN - Grade: Regular - Fit Type: Specific |
Package Included: 4 PCS Oxygen Sensors
234-5134 (5-wire oxygen sensor): Upstream Right, Bank 1 Sensor 1, Cylinder 1,2,3, before catalytic converter 1X
234-5133 (5-wire oxygen sensor): Upstream Left, Bank 2 Sensor 1, Cylinder 4,5,6, before catalytic converter 1X
234-4470 (4-wire oxygen sensor): Downstream Right, Bank 1 Sensor 2, Cylinder 1,2,3, after catalytic converter 1X
234-4470 (4-wire oxygen sensor): Downstream Left, Bank 2 Sensor 2, Cylinder 4,5,6, after catalytic converter 1X
Please check the fitment notes for Oxygen sensor installation location information!!!
Bank 1 Sensor 1 means Upstream Right/Rear; Bank 2 Sensor 1 means Upstream Left/Front
Bank 1 Sensor 2 means Downstream Right/Rear; Bank 2 Sensor 2 means Downstream Left/Front
sensor 1=Upstream sensor 2=Downstream
Why Choose Automotive-Leader Product?
Fast Response & Speed & Stable Performance & Longer Service Life
High-quality materials used, enhance durability performance
100% Rigorous Tested Before On Sale & Shipment
Meet The Professional Specification As OEM Standard