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BMW 525i Oxygen Sensor Reviews
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Shop BMW 525i Replacement Oxygen Sensor

You selected an BMW for its blend of agile performance and elegant lines that render it as a unique treasure. BMW is known for manufacturing performance vehicles that deliver reliability and great driver control. Would it make sense to budget a hefty price on a great, stylish luxury vehicle, only to cut costs on replacement auto parts? Luxurious cars including your plush BMW 525i are designed to be used carefully and also given proper repairs. To keep the high value and style you made an investment in with your BMW 525i, it's critical to buy only the best names in OEM and aftermarket auto parts. Your BMW was designed using care and craftsmanship; it ought to get new components with a similar high level of quality. Your car or truck is an investment because it has high performance and great style, and to have it running in its best shape you need the ultimate in top-notch parts. If you selected your high-performance vehicle because it had high-end engine power and performance, insure your investment and install the best replacement parts. The BMW 525i Oxygen Sensor is a component used to control the level of oxygen in a car or truck's exhaust system. If your car's ratio of fuel to air is too lean, poor combustion will be the consequence; in addition, a rich fuel mix can cause damage to your motor and unwanted air pollution from the vehicle's tailpipe. A high quality BMW 525i Oxygen Sensor monitors the amount of oxygen which is going into your vehicle's engine. Nobody can give you a better selection of exceptional aftermarket accessories than we will every day. No matter which model year you have, we carry the BMW parts you are looking for. No matter whether you drive a convertible or everyday Detroit metal, we have the parts and accessories you are searching for right on site at www.PartsGeek.com.

We stock these Oxygen Sensor brands for the BMW 525i: BoschNGKDelphiDIY Solutions

Oxygen Sensors available for the following BMW 525i years: 2007, 2006, 2005, 2004, 2003, 2002, 2001, 1995, 1994, 1993, 1992, 1991, 07, 06, 05, 04, 03, 02, 01, 95, 94, 93, 92, 91. This part is also sometimes called BMW 525i O2 Sensor. We stock oxygen sensor parts for most BMW models including 325i, X5, 528i, 328i, X3, 530i, 540i, 740iL, M3, Z3, 330i, 325Ci, 330Ci, 335i, 535i, 323i, 325xi, 318i, 740i, M5, 750Li, 745Li, 325is, 330xi, 328xi, 328i xDrive, 328is, 745i, Z4, 318ti, 750iL, 750i, 323Ci, 550i, 325e, 323is, 335xi, 535xi, 545i and 135i.

Oxygen Sensor for BMW 525i - Partsgeek

Select your 525i year

Review Fitment Notes
Showing 21 of 356 Results
Upstream Bosch Oxygen Sensor - for 1995 BMW 525i 2.5L 6 Cyl - 13108 Click to Enlarge
5 Stars
Bosch 13108
Oxygen Sensor
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Part Number: 13108
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Upstream
Condition: New
Shipping Options: Ground
$76.43
(32) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1995 BMW 525i 2.5L 6 Cyl
Upstream Bosch Oxygen Sensor - for 2001 BMW 525i 2.5L 6 Cyl - 13477 Click to Enlarge
5 Stars
Bosch 13477
Oxygen Sensor
Loading Reviews...
Part Number: 13477
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Upstream
Condition: New
Shipping Options: Ground
$59.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 BMW 525i 2.5L 6 Cyl
Upstream Bosch Oxygen Sensor - for 2003 BMW 525i 2.5L 6 Cyl - 13477 Click to Enlarge
5 Stars
Bosch 13477
Oxygen Sensor
Loading Reviews...
Part Number: 13477
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Upstream
Condition: New
Shipping Options: Ground
$59.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 BMW 525i 2.5L 6 Cyl
Upstream Bosch Oxygen Sensor - for 2002 BMW 525i 2.5L 6 Cyl - 13477 Click to Enlarge
5 Stars
Bosch 13477
Oxygen Sensor
Loading Reviews...
Part Number: 13477
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Upstream
Condition: New
Shipping Options: Ground
$59.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 BMW 525i 2.5L 6 Cyl
Upstream Bosch Oxygen Sensor - for 2004 BMW 525i 2.5L 6 Cyl - 17215 Click to Enlarge
5 Stars
Bosch 17215
Oxygen Sensor
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Part Number: 17215
Brand: Bosch
Notes: Actual OE Oxygen Sensor -- Cylinder(s) 4, 5, and 6
  • Advanced Wideband sensing element for exact air/fuel measurement
  • Robust sensor design increases sensor longevity
  • Seared protection tube due to 100% functional quality test
  • 'True Direct-fit' OE connectors and harness
  • Pre-coated threads with anti-seize compound right out of the box
Position: Upstream
Condition: New
Shipping Options: Ground
$118.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 BMW 525i 2.5L 6 Cyl
Downstream Bosch Oxygen Sensor - for 2003 BMW 525i 2.5L 6 Cyl - 15109 Click to Enlarge
5 Stars
Bosch 15109
Oxygen Sensor
Loading Reviews...
Part Number: 15109
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream
Condition: New
Shipping Options: Ground
$69.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 BMW 525i 2.5L 6 Cyl
Upstream Bosch Oxygen Sensor - for 2004 BMW 525i 2.5L 6 Cyl - 17216 Click to Enlarge
5 Stars
Bosch 17216
Oxygen Sensor
Loading Reviews...
Part Number: 17216
Brand: Bosch
Notes: Actual OE Oxygen Sensor -- For cylinders 4-6
  • Advanced Wideband sensing element for exact air/fuel measurement
  • Robust sensor design increases sensor longevity
  • Sealed protection tube due to 100% functional quality test
  • 'True Direct-fit' OE connectors and harness
  • Pre-coated threads with anti-seize compound right out of the box
Position: Upstream
Condition: New
Universal Or Specific Fit: Specific
Oxygen Sensor Type: Wide band
Shipping Options: Ground
$114.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2004 BMW 525i 2.5L 6 Cyl
Upstream Bosch Oxygen Sensor - for 2005 BMW 525i 2.5L 6 Cyl - 17215 Click to Enlarge
5 Stars
Bosch 17215
Oxygen Sensor
Loading Reviews...
Part Number: 17215
Brand: Bosch
Notes: Actual OE Oxygen Sensor -- Cylinder(s) 4, 5, and 6
  • Advanced Wideband sensing element for exact air/fuel measurement
  • Robust sensor design increases sensor longevity
  • Seared protection tube due to 100% functional quality test
  • 'True Direct-fit' OE connectors and harness
  • Pre-coated threads with anti-seize compound right out of the box
Position: Upstream
Condition: New
Shipping Options: Ground
$118.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 BMW 525i 2.5L 6 Cyl
Downstream Bosch Oxygen Sensor - for 2001 BMW 525i 2.5L 6 Cyl - 15109 Click to Enlarge
5 Stars
Bosch 15109
Oxygen Sensor
Loading Reviews...
Part Number: 15109
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream
Condition: New
Shipping Options: Ground
$69.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 BMW 525i 2.5L 6 Cyl
Bosch Oxygen Sensor - for 1995 BMW 525i - W0133-1610523 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: W0133-1610523
Brand: Bosch
Notes: OE Connector - 1450mm
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$112.90
Our Price: $80.58
(8) In Stock
This Part Fits:
Catalog: A
Vehicle
1995 BMW 525i
Upstream Bosch Oxygen Sensor - for 2007 BMW 525i 3.0L 6 Cyl - 17098 Click to Enlarge
5 Stars
Bosch 17098
Oxygen Sensor
Loading Reviews...
Part Number: 17098
Brand: Bosch
Notes: Actual OE Oxygen Sensor -- Cylinder(s) 1, 2, and 3
  • Advanced Wideband sensing element for exact air/fuel measurement
  • Robust sensor design increases sensor longevity
  • Seared protection tube due to 100% functional quality test
  • 'True Direct-fit' OE connectors and harness
  • Pre-coated threads with anti-seize compound right out of the box
Position: Upstream
Condition: New
Shipping Options: Ground
$91.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2007 BMW 525i 3.0L 6 Cyl
Upstream Bosch Oxygen Sensor - for 1994 BMW 525i 2.5L 6 Cyl - 13108 Click to Enlarge
5 Stars
Bosch 13108
Oxygen Sensor
Loading Reviews...
Part Number: 13108
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Upstream
Condition: New
Shipping Options: Ground
$76.43
(32) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1994 BMW 525i 2.5L 6 Cyl
Upstream Bosch Oxygen Sensor - for 2005 BMW 525i 2.5L 6 Cyl - 17216 Click to Enlarge
5 Stars
Bosch 17216
Oxygen Sensor
Loading Reviews...
Part Number: 17216
Brand: Bosch
Notes: Actual OE Oxygen Sensor -- For cylinders 4-6
  • Advanced Wideband sensing element for exact air/fuel measurement
  • Robust sensor design increases sensor longevity
  • Sealed protection tube due to 100% functional quality test
  • 'True Direct-fit' OE connectors and harness
  • Pre-coated threads with anti-seize compound right out of the box
Position: Upstream
Condition: New
Universal Or Specific Fit: Specific
Oxygen Sensor Type: Wide band
Shipping Options: Ground
$114.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2005 BMW 525i 2.5L 6 Cyl
Downstream Bosch Oxygen Sensor - for 2002 BMW 525i 2.5L 6 Cyl - 15109 Click to Enlarge
5 Stars
Bosch 15109
Oxygen Sensor
Loading Reviews...
Part Number: 15109
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream
Condition: New
Shipping Options: Ground
$69.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 BMW 525i 2.5L 6 Cyl
Downstream Bosch Oxygen Sensor - for 2004 BMW 525i 2.5L 6 Cyl - 15680 Click to Enlarge
5 Stars
Bosch 15680
Oxygen Sensor
Loading Reviews...
Part Number: 15680
Brand: Bosch
Notes: Actual OE Oxygen Sensor -- Cylinder(s) 1, 2, and 3
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream
Condition: New
Shipping Options: Ground
$85.43
(92) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 BMW 525i 2.5L 6 Cyl
Rear Bosch Oxygen Sensor - for 2005 BMW 525i - 11 78 7 523 435 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 11 78 7 523 435
Brand: Bosch
Notes: Oxygen Sensor -- Before catalyst in exhaust manifold
Position: Rear
Condition: New
Shipping Options: Ground
$139.73
(19) In Stock
This Part Fits:
Catalog: G
Vehicle
2005 BMW 525i
Downstream NGK Oxygen Sensor - for 2007 BMW 525i 3.0L 6 Cyl - 25612 Click to Enlarge
5 Stars
NGK 25612
Oxygen Sensor
Loading Reviews...
Part Number: 25612
Brand: NGK
Notes: Direct Fit Oxygen Sensor -- Cylinders 1-3; B1S2; OE Equivalent Design
  • NTK oxygen sensors are equipped with OEM specified connectors and attaching hardware for easy installation. Dual-coated platinum element to increase longevity and ensure the quickest response time.
  • NTK is constantly improving sensor designs to provide excellent performance and improve resistance to failure. NTK works with their OEM manufacturers through each phase of development from concept to production.
  • NTK oxygen sensors heat up rapidly to meet requirements of the vehicle to improve fuel economy and reduce emissions. NTK's proprietary ceramic element overcoat protects against sensor failure.
Position: Downstream
Condition: New
Shipping Options: Ground
$82.08
(2) In Stock
This Part Fits:
Catalog: H
Vehicle Engine
2007 BMW 525i 3.0L 6 Cyl
Rear Delphi Oxygen Sensor - for 2007 BMW 525i - ES20173 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: ES20173
Brand: Delphi
Notes: Oxygen Sensor -- Sensor Located in Rear Manifold/Exhaust Pipe; 380mm Length
  • 100 years of OE experience, supplier to the world's top automakers, OE Heritage and knowledge built into every aftermarket part.
  • Smart design consolidates SKUs without using long wires
  • Delphi planar technology covers older, conical design sensors
  • Patented protective sensor coating helps prevent contamination
  • OE tested to 150,000 miles, plus 2,000 hours severe thermal testing
  • Validated for all fuel types, including ethanol blends like E85
  • Delphi is a global OE manufacturer for oxygen sensor and all oxygen sensors are built to Delphi's OE standards
Position: Rear
Condition: New
Position(s): Rear, Rear Left, Rear Right. For the position specific to your vehicle, refer to the Application tab.
Shipping Options: Ground
$113.97
(1) In Stock
This Part Fits:
Catalog: C
Vehicle
2007 BMW 525i
Upstream Bosch Oxygen Sensor - for 2003 BMW 525i 2.5L 6 Cyl - 13477 Click to Enlarge
5 Stars
Bosch 13477
Oxygen Sensor
Loading Reviews...
Part Number: 13477
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Upstream
Condition: New
Shipping Options: Ground
$58.97
(4) In Stock
This Part Fits:
Catalog: T
Vehicle Engine
2003 BMW 525i 2.5L 6 Cyl
Upstream DIY Solutions Oxygen Sensor Set - for 2003 BMW 525i 2.5L 6 Cyl - EMS00134 Click to Enlarge
5 Stars
DIY Solutions EMS00134
Oxygen Sensor Set
Loading Reviews...
Part Number: EMS00134
Brand: DIY Solutions
Notes: Oxygen Sensor Set -- L6 2.5L; Upstream
  • Direct Fit Replacement
  • Quality Tested - built to a strict level of product standards.
Position: Upstream
Condition: New
Quantity: 2 Piece
Shipping Options: Free Ground Shipping
$67.95
with FREE Shipping
(20) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
2003 BMW 525i 2.5L 6 Cyl
Downstream Bosch Oxygen Sensor - for 2003 BMW 525i 2.5L 6 Cyl - 15109 Click to Enlarge
5 Stars
Bosch 15109
Oxygen Sensor
Loading Reviews...
Part Number: 15109
Brand: Bosch
Notes: Actual OE Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream
Condition: New
Shipping Options: Ground
$78.97
(5) In Stock
This Part Fits:
Catalog: N
Vehicle Engine
2003 BMW 525i 2.5L 6 Cyl

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BMW 525i Oxygen Sensor Reviews
5 of 5
Verified Customer
4/1/13 10:14 AM - USA

Perfect part, thanks! - Jerome

- 2003 BMW 525i Oxygen Sensor
5 of 5
Verified Customer
8/22/13 01:14 PM - USA

Loved it for the price....................will continue to shop on here - Men0

- 2001 BMW 525i Oxygen Sensor
5 of 5
Verified Customer
8/22/13 01:15 PM - USA

For the price u cant complain, bought all 4 for a cheap price....thanks alot - Men0

- 2001 BMW 525i Oxygen Sensor
5 of 5
Verified Customer
9/15/13 02:44 PM - USA

Bought Bosch Oxygen Sensor 15109 (Downstream) - for my 2003 BMW 525ti and in addition to a great price for this product, the sensor worked perfectly and codes went away. Replaced them at 108k miles. purchased together with the upstream (4 total) - Selway

- 2003 BMW 525i Oxygen Sensor
5 of 5
Verified Customer
9/15/13 02:41 PM - USA

Bought Bosch Oxygen Sensor - Upstream Bosch 13477 for my 2003 BMW 525ti and in addition to a great price for this product, the sensor worked perfectly and codes went away. Replaced them at 108k miles. - Selway

- 2003 BMW 525i Oxygen Sensor
5 of 5
Verified Customer
1/21/14 12:43 PM - USA

Items delivered in a timely manor.Found the pricing to be the cheapest around. - Ray

- 2001 BMW 525i Oxygen Sensor