Bosch 9A1-606-177-02 Premium OE-Type Oxygen Sensor

The Bosch 9A1-606-177-02 is a premium original equipment-type oxygen sensor engineered to restore proper engine performance and fuel efficiency. Also known as Bosch part number 16825, this narrowband O2 sensor features a 4-wire heated design that monitors exhaust oxygen content to help the engine control unit maintain optimal air-fuel ratios for reduced emissions and improved fuel economy.

Key Features:

• Double laser-welded stainless steel body for superior durability and protection against exhaust emissions
• Fast-acting internal heater reaches operating temperature within seconds for optimal performance
• 100% factory-tested with seared appearance on protection tube confirming full functionality
• Direct-fit OE connector for simple plug-and-play installation
• Threads pre-coated with anti-seize compound for easy installation and removal
• M18 x 1.5 thread size with 22mm hex for proper fitment
• Overall length of 22-13/16 inches with 4-wire blade-type female terminals

Bosch invented the automotive oxygen sensor and remains the world's leading OE supplier, delivering the quality and precision demanded by vehicle manufacturers. This sensor helps maintain complete combustion by regulating the ideal 14.7:1 air-fuel ratio, reducing harmful emissions while maximizing engine efficiency. Cross-references to OEM part numbers 997-606-177-02, 99760617702, and UPC 028851168250.