Bosch 17078 Premium Wideband Air/Fuel Ratio Oxygen Sensor

The Bosch 17078 is a premium wideband air/fuel ratio oxygen sensor engineered with advanced planar pump-cell technology for precise exhaust gas monitoring. Unlike conventional switching oxygen sensors, this wideband sensor continuously measures the exact air-to-fuel ratio across the full lambda range, providing the engine control unit with highly accurate real-time data for optimal fuel mixture control.

Key Features:

• Advanced wideband sensing element for exact air/fuel measurement across full lambda range
• Planar pump-cell design delivers continuous, high-precision measurements rather than simple rich/lean switching
• Robust ceramic construction withstands harsh thermal cycles and rapid load changes
• Fast light-off with optimized heater control for quick sensor activation
• Meets or exceeds OEM specifications for reliable performance and durability
• Direct replacement for OEM part numbers 4H0906262H and 4H0906262N

Bosch invented the automotive oxygen sensor and remains the world's leading original equipment manufacturer of oxygen sensors. This wideband sensor enables exceptionally accurate air-fuel mixture control, supporting improved fuel efficiency, enhanced engine performance, and reduced emissions under all operating conditions. The precision measurement capability helps ensure proper catalytic converter function while meeting modern emissions standards.