Bosch 18273 left oxygen sensor for the 2014-2018 Chevrolet Silverado 1500 V6 4.3L, V8 5.3L or 6.2L and other vehicles measures the air-fuel ratio in the exhaust and reports it to the ECU. That feedback helps the ECU keep combustion stable and helps reduce emissions.
- Switching-Type narrow-band design with an advanced ceramic element and an integrated heater element
- Optimized heater control for consistent readings under harsh thermal and vibration loads
- Withstands exhaust streams up to 1,880°F; TSP coating resists vibration, corrosion and contamination
- Reaches operating temperature in under 10 seconds for quick closed-loop control
Quick facts
- Part: Bosch 18273 oxygen sensor
- Fits: 2014-2018 Chevrolet Silverado 1500 V6 4.3L, V8 5.3L or 6.2L and other vehicles
- Position: Upstream, upstream left
- Material: Metal housing
- Condition: New
An exhaust leak, a misfiring cylinder or a damaged wiring connector can be behind a check engine light, rough running or poor fuel economy just as a worn sensor can, so find the cause before you buy one.
Fits
This oxygen sensor for the 2014-2018 Chevy Silverado 1500 V6 4.3L, V8 5.3L or 6.2L also fits the 2015-2020 Chevrolet Tahoe V8 5.3L, the 2018-2020 Tahoe V8 6.2L and the 2015-2020 GMC Yukon V8 5.3L or 6.2L. Open the Buyer's Guide tab to check your exact model and engine.
Specifications
Fit and size
- Position: Upstream, upstream left
- Thread size: M18 - 1.5
- Hex size: 22 mm
- Length (sealing surface to end of connector): 13.4 in
- Quantity per vehicle: varies by model and year
Build and materials
- Type: Switching-type, narrow-band, heated
- Housing material: Metal
- Wiring harness: included
- Condition: New
- Warranty: Bosch 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks
In the box
One oxygen sensor with its wiring harness; a mounting bracket is not included. This listing is one left-side sensor, the quantity a vehicle takes varies by model and year, and any right-side sensor is ordered separately.
Installation notes
- Pre-applied conductive anti-seize on the threads.
- Direct-fit connectors for quick installation.
Frequently Asked Questions
Will this Chevy Tahoe oxygen sensor fit a 2015-2020 Chevrolet Tahoe V8 5.3L?
Yes. Bosch 18273 fits the 2015-2020 Chevrolet Tahoe V8 5.3L and the 2018-2020 Tahoe V8 6.2L. Open the Buyer's Guide tab to check your exact engine.
Is this the right GMC Yukon oxygen sensor for a 2015-2020 GMC Yukon V8 6.2L?
Yes. Bosch 18273 fits the 2015-2020 GMC Yukon with the V8 5.3L or the 6.2L engine.
Does the Bosch 18273 oxygen sensor come with its wiring harness?
Yes. The Bosch 18273 includes a wiring harness. A mounting bracket is not included.
Is this Bosch premium oxygen sensor heated, and what thread does it use?
Yes. This sensor is a narrow-band heated type with an M18 - 1.5 thread and a 22 mm hex.
What warranty comes with the Bosch O2 sensor?
Bosch backs it with a 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks.
