Bosch 17712 Air / Fuel Ratio Sensor

Buyer fitment guide only intended as reference. Please use catalogue search by vehicle to ensure proper fitment.

• BMW 11788659971

• [BEST-IN-CLASS WARRANTY] €“ Bosch backs every Oxygen (O2) sensor with a 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks, reflecting the quality and durability built into every unit
• [EASY INSTALL] €“ Engineered for quick installation with direct-fit connectors and pre-applied conductive anti-seize on threads to ensure hassle-free replacement
• [FAST RESPONSE] €“ Bosch Wideband A/F Oxygen (O2) sensors reach operating temperature in <7 seconds and delivers fast signal availability to the ECU, enabling quick closed-loop control for improved cold-start performance and lower emissions
• [LONG LIFETIME] €“ Built to withstand exhaust streams up to 1,880°F, Bosch Oxygen (O2) sensors feature stainless steel housings, integrated heater elements, and TSP coating to resist vibration, corrosion, and contamination
• [MADE IN USA] €“ Bosch proudly manufactures over 90% of Oxygen (O2) sensors for the North American market out of Anderson, SC €” ensuring high quality and supply reliability
• [OE-TRUSTED] €“ As the inventor of Oxygen (O2) sensors and Wideband A/F technology, Bosch has supplied OE manufacturers for more than 50 years, providing proven quality and reliability that set the standard for modern lambda-control systems
• [SUPERIOR PERFORMANCE] €“ Bosch Wideband A/F Oxygen (O2) sensors deliver real-time air-fuel data that surpasses the limited feedback of switching sensors €” allowing for cleaner combustion, better fuel economy, and maximum performance
• [WIDE COVERAGE] €“ Bosch offers one of the broadest portfolios of Wideband A/F Oxygen (O2) sensors to market, delivering sensors that meet or exceed OE specifications for millions of vehicles across domestic, European, and Asian nameplates
• Bosch Wideband A/F Oxygen (O2) sensors provide continuous, high-precision measurements of the air-fuel ratio across the full lambda range, giving the ECU far more detailed information than traditional switching sensors. This enables exceptionally accurate air-fuel mixture control €” supporting improved fuel efficiency, engine performance, and reduced emissions under all operating conditions. Bosch pioneered the first Wideband A/F Oxygen (O2) sensor, introducing the planar pump-cell design that has become the global standard for modern engine management and low-emission technologies. With fast light-off, optimized heater control, and robust ceramic construction, Bosch Wideband A/F Oxygen (O2) sensors deliver reliable performance even during rapid load cha