Bosch 11-78-7-570-760 Premium Wideband Oxygen Sensor

The Bosch 11-78-7-570-760 is a premium original equipment wideband oxygen sensor designed for precise air-fuel ratio monitoring in BMW applications. This sensor carries Bosch part number 17447 and replaces BMW OEM part number 11787570760, designed for upper front mounting position for cylinders 1-3 on 3.0L engines without twin power turbo.

Advanced Wideband Technology:

• Provides continuous, high-precision measurements of the air-fuel ratio across the full lambda range, delivering far more detailed information than traditional switching sensors
• Fast-acting heater optimizes sensor operation, allowing the oxygen sensor to reach its operating temperature quicker for optimum performance
• Features optimized heater control and robust ceramic construction for reliable performance during rapid load changes and harsh thermal cycles

Quality Construction:

• Exclusive double laser-welded stainless steel body is totally submersible and sealed tight to protect against damage from exhaust emissions
• Each oxygen sensor by Bosch is subjected to a 1,000 degree Celsius functional test and a leak test to ensure environmental and functional robustness
• Threads pre-coated with anti-seize compound right out of the box for simple, hassle-free installation
• True Direct-fit OE connectors and harnesses ensure proper fitment

Performance Benefits:

Enables exceptionally accurate air-fuel mixture control — supporting improved fuel efficiency, engine performance, and reduced emissions under all operating conditions. Bosch is the world's leading supplier and original equipment manufacturer of Oxygen Sensors and invented the automotive oxygen sensor, bringing decades of proven expertise to every unit.

This sensor installs in the front position before the catalyst in the exhaust pipe, monitoring exhaust gases to help the engine control unit maintain optimal combustion efficiency and minimize harmful emissions.