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Bosch 13453 Oxygen Sensor - Upstream
| Brand | Bosch 13453 |
|---|---|
| Position | Upstream |
| Wiring Harness Length | 8.9 |
| Terminal Type | Pin |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Grade Type | Standard replacement |
| Connector Shape | Round |
| Terminal Quantity | 4 |
| Connector Gender | Female |
| Terminal Gender | Female |
| Overall Length | 12.6 |
| Mounting Type | Threaded |
| Automotive Color / Finish | Steel |
| Automotive Item Weight (lbs) | 0.220462 lb |
| Heated (Oxygen Sensor) | Yes |
| Hex Size (Oxygen Sensor) | 22 mm |
| Housing Material | Metal |
| Length (Sealing Surface To End Of Connector) | 11.4 in |
| Mounting Bracket Included | No |
| Oxygen Sensor Type | Narrow-band heated |
| Sensor Type | Narrow-band |
| Thread Diameter (Oxygen Sensor) | 18 mm |
| Thread Size | 18 |
| Wiring Harness Included | Yes |
| Product line | Actual OE Oxygen Sensor |
| Fits | BMW · 2 vehicles |
Actual OE design. Bosch OE-proven oxygen sensor quality trusted by vehicle manufacturers.
Heated narrow-band sensor. Provides precise air-fuel-ratio readings for stable combustion control.
Threaded metal housing. Built with high-temperature-resistant materials for harsh operating conditions.
Cross-references 11781704259 for the same application. See all 1.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Bosch 13453 Oxygen Sensor Overview
Bosch 13453 is an Actual OE Oxygen Sensor built as a narrow-band heated replacement for precise air-fuel-ratio feedback to the ECU. It is a direct-fit sensor for select 1995 BMW 740i and 740iL upstream applications, including the BMW 740i upstream oxygen sensor and BMW 740iL upstream oxygen sensor search terms buyers use when replacing a failing emissions sensor.
- Brand: Bosch Actual OE Oxygen Sensor
- Part number: 13453
- Narrow-band heated oxygen sensor
- Specific-fit design with 4-wire harness
- Round female connector with pin terminals
- Threaded mounting, 18 mm thread diameter
- Hex size: 22 mm
- Wiring harness included
- Metal housing for high-temperature service
OE-Style Sensor Performance
Built on Bosch’s long OE development history, this switching-type oxygen sensor uses a ceramic sensing element and controlled heater operation to reach operating temperature quickly and maintain stable closed-loop fuel control. Bosch 13453 is engineered for consistent signal accuracy under heat, vibration, and daily driving conditions, making it a practical replacement when the original upstream sensor on a 1995 BMW 740i or 740iL begins to age.
This part cross-references BMW 11781704259 for the same application.
Common Problems This Sensor Can Address
- Check engine light related to oxygen sensor response or heater circuit faults
- Rough idle or unstable fuel trim caused by inaccurate upstream O2 readings
- Reduced fuel economy from delayed closed-loop operation
- Emissions test failure tied to a worn narrow-band sensor
- Slow sensor switching that affects ECU mixture control
Installation Notes
Install Bosch 13453 in the threaded upstream location specified for the vehicle. Verify connector shape, wire count, and thread size before installation, and inspect the harness routing to keep it away from exhaust heat and moving components. Use the correct 22 mm oxygen sensor socket and confirm the sensor seats cleanly in the bung before tightening.
Quality Assurance
Bosch supplies OE-developed oxygen sensors to the aftermarket using the same design principles that support vehicle manufacturer applications. Bosch 13453 is an OE-style replacement for select BMW 740i and 740iL upstream applications, with Bosch engineering focused on accurate lambda feedback and durable operation.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1995 | BMW | 740i | 4.0L | V8 | Upstream | Actual OE Oxygen Sensor |
| 1995 | BMW | 740iL | 4.0L | V8 | Upstream | Actual OE Oxygen Sensor |
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