Skip to product information
4Pcs O2 Sensor Set for BMW 545i 645Ci 4.4L V8 (2004-2005 Manual Trans) 234-5133 234-5134  234-4470
1/9

4Pcs O2 Sensor Set for BMW 545i 645Ci 4.4L V8 (2004-2005 Manual Trans) 234-5133 234-5134 234-4470

Sale price  $153.95 Regular price  $160.33
-4%
8 left

🔥Automatically enjoy an 8% discount

  • Visa
  • Mastercard
  • American Express
  • Discover
  • JCB
  • Diners Club
  • PayPal
  • Afterpay
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

Verify Fitment for Your Vehicle
🛡️ Four Major Safeguards +
🚚
Free & Fast ShippingShips within 72 hrs from US
🚛
30-Day ReturnsReturn to our FL, USA center
🛡️
2-Year Warranty100% Brand New & Tested
💳
Secure PaymentEncrypted checkout

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

Warranty & Support: 2 Years + 24/7 Technical Support
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

Subscribe to our email list to receive a 10% VIP discount.