Description
Bosch Oxygen Sensor 15321 – For BMW Vehicles
Manufacturer Part Number: 15321
Product Overview
The Bosch Oxygen Sensor for BMW vehicles is an essential component for maintaining optimal engine performance and reducing emissions. Designed specifically for select BMW models, this oxygen sensor measures the exhaust concentration of oxygen, providing real-time feedback on the air-fuel mixture. This helps to ensure your engine runs neither too rich nor too lean, contributing to improved fuel efficiency and reduced harmful emissions.
Engineered to OEM standards, the Bosch Oxygen Sensor is a premium-grade product that guarantees reliability and longevity. With a typical lifespan of around 100,000 miles, this sensor is a crucial part of your vehicle’s emission control system, and it’s trusted by professionals in the automotive industry.
Cross Reference Numbers
- BMW:11 78 7 512 002
- 11787512002
Vehicle Compatibility
This part fits some of the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility.
- BMW / Alpina B7 / 4.4V8, 2004-2008
- BMW / 545i / 4.4V8, 2004-2005
- BMW / 645Ci / 4.4V8, 2004-2005
- BMW / 745i / 4.4V8, 2004-2005
- BMW / 745Li / 4.4V8, 2004-2005
Why Shop at our website?
Since 2000, our website has been a trusted destination for European car owners looking for reliable parts at great prices. Here’s why customers choose us:
- Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
- Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
- Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
- Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
- Established Trust: Serving the European auto community since 2000.
Frequently Asked Questions
What does this part do?
The Bosch Oxygen Sensor monitors the concentration of oxygen in the exhaust gases. It plays a critical role in regulating the engine’s air-fuel mixture, ensuring optimal combustion and emission control.
What vehicles is this part compatible with?
This oxygen sensor is compatible with select BMW models, including Alpina B7, 545i, 645Ci, 745i, and 745Li from 2004 to 2008. For precise fitment, please utilize the vehicle selector tool.
What are common signs this part may need replacement?
Key symptoms indicating the need for replacement include poor fuel economy, increased emissions, rough engine performance, and the illumination of the check engine light.
Are there any DTC (Diagnostic Trouble Codes) associated with this part?
Common OBD-II codes associated with oxygen sensor issues include P0130, P0131, P0132, P0133, and P0134. If you experience any of these codes, consult professional repair documentation or experts for diagnosis.
Specification
-
- eEuroparts SKU : 236016
- Weight : 0.3042 lbs
- Dimensions (L x W x H) : 2.2047 x 1.9685 x 5.8268 in
- Barcode : 00028851153218
- Manufacturer Part # : 15321
- Brand : Bosch
- Manufacturer : Bosch
- MPN : 15321
- Part Type : Oxygen Sensor
- OE Part Numbers : 11787512002
- Features : Automotive Color / Finish : Steel
Automotive Item Weight (lbs) : 0.264555 lb
Connector Gender : Male
Connector Shape : Round
Grade Type : Regular
Heated (Oxygen Sensor) : Yes
Hex Size (Oxygen Sensor) : 22 mm
Housing Material : Metal
Length (Sealing Surface To End Of Connector) : 16.5354330708661 in
Mounting Bracket Included : No
Mounting Type : Threaded
Overall Length : 17.7165354330709
Oxygen Sensor Type : Narrow-band heated
Prop 65 Warning Label Required? : No
Sensor Type : Heated
Terminal Gender : Male
Terminal Quantity : 4
Terminal Type : Blade
Thread Diameter : 18
Thread Size : 18
Universal Or Specific Fit : Specific
Wire Quantity : 4
Wiring Harness Included : Yes
Wiring Harness Length : 14.0157480314961
- Fitment
- Fitment Type : Vehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2004 | BMW | 545i | Base (4.4 V8 GAS) | Position: Downstream Left |
| 2004 | BMW | 745Li | Base (4.4 V8 GAS) | Position: Downstream Left, Notes: From 10/2003 |
| 2004 | BMW | 745i | Base (4.4 V8 GAS) | Position: Downstream Left, Notes: From 10/2003 |
| 2004 | BMW | 645Ci | Base (4.4 V8 GAS) | Position: Downstream, Notes: Cylinder(s) 5 to 8 |
| 2005 | BMW | 545i | Base (4.4 V8 GAS) | Position: Downstream Left |
| 2005 | BMW | 645Ci | Base (4.4 V8 GAS) | Position: Downstream, Notes: Cylinder(s) 5 to 8 |
| 2005 | BMW | 745i | Base (4.4 V8 GAS) | Position: Downstream Left |
| 2005 | BMW | 745Li | Base (4.4 V8 GAS) | Position: Downstream Left |
| 2007 | BMW | Alpina B7 | Base (4.4 V8 GAS) | Position: Upstream, Notes: Cylinder(s) 5 to 8 |
| 2008 | BMW | Alpina B7 | Base (4.4 V8 GAS) | Position: Upstream, Notes: Cylinder(s) 5 to 8 |
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