Bosch 17227 Premium Original Equipment Oxygen Sensor

The Bosch 17227 is a Premium Original Equipment (OE) Oxygen Sensor engineered to restore precise air-fuel ratio control to your vehicle's engine management system. As the inventor of the automotive oxygen sensor, Bosch brings decades of manufacturing expertise to every unit — ensuring this direct-fit replacement meets or exceeds original factory specifications.

The engine control unit (ECU) relies on continuous feedback from the O2 sensor to maintain the optimal 14.7:1 air-to-fuel ratio. A failing sensor can result in poor fuel economy, rough idle, failed emissions tests, or an illuminated check engine light. The Bosch 17227 restores accurate exhaust oxygen measurement so the ECU can make real-time fuel trim adjustments for stable combustion and reduced emissions.

Key Features:

• OE-Grade Quality — Designed and manufactured to original equipment specifications for reliable, long-lasting performance
• Double Laser-Welded Stainless Steel Body — Totally submersible and sealed tight to protect against damage from exhaust emissions and contaminants
• 100% Functionally Tested — Every sensor is fully tested prior to shipment; the seared protection tube is a result of this rigorous quality process
• Fast-Acting Heater Element — Brings the sensor to operating temperature within seconds for optimum closed-loop performance from cold start
• True Direct-Fit Connector & Harness — Matches the OE connector exactly for a plug-and-play installation with no splicing or modifications required
• Pre-Coated Anti-Seize Threads — Threads are pre-treated right out of the box to simplify installation and prevent galling or seizing

The Bosch 17227 oxygen sensor is sold as a single sensor and is backed by Bosch's reputation as the world's leading OE supplier of automotive oxygen sensors, with over one billion sensors produced to date.