Grams Performance Wideband Air/Fuel Gauge 52mm with Bosch 4.9 LSU Sensor

Grams Performance 52mm Wideband Air/Fuel Gauge with Bosch 4.9 LSU Sensor Precision tuning and engine safety — the Grams Performance Wideband Air/Fuel Gauge delivers fast, accurate AFR readings so you can tune for peak power and protect your motor. Built around the proven Bosch 4.9 LSU sensor , this 52mm (2.047 in.) gauge gives reliable measurements with resolution to 0.001. Sensor: Bosch 4.9 LSU for industry-leading accuracy and longevity Display: Clear 4-digit readout plus a 3-color LED sweep (red → yellow → green) for at-a-glance AFR status Size: 52mm housing fits standard gauge pods and panels Response: Fast update rate for real-time tuning decisions Use case: Street, track, and motorsport applications where precise AFR monitoring is critical This gauge is ideal for tuners, engine builders, and enthusiasts who demand accurate air/fuel information to optimize performance, fuel economy, and engine safety. Easy to read, quick to respond, and built with quality components, the Grams Performance Wideband is a professional-grade solution for modern engines.