-Replacement for Holley Terminator X Systems-

Bosch LSU 4.9 Wideband Oxygen Sensor

The Bosch LSU 4.9 Wideband Oxygen Sensor delivers the precision and reliability required for accurate air-fuel ratio monitoring. Trusted by professional tuners and performance enthusiasts, the LSU 4.9 is widely used in both street and race applications where consistent AFR data is critical for engine performance and tuning.

Engineered with Bosch’s proven sensor technology, the LSU 4.9 provides fast response times, excellent durability, and dependable readings across a wide operating range. It is commonly used with a variety of aftermarket wideband systems and engine management platforms, making it an ideal choice whether you are replacing a worn sensor or upgrading your current setup.

With reliable performance and OEM-level accuracy, the Bosch LSU 4.9 helps ensure your engine is properly monitored and tuned for maximum efficiency and performance.

Key Features

• High-Precision AFR Monitoring – Bosch LSU 4.9 technology provides accurate and stable air-fuel ratio readings
• Broad Compatibility – Works with many popular wideband controllers and engine management systems
• Fast Response Time – Delivers quick and reliable feedback for tuning and diagnostics
• Durable Bosch Construction – Designed for long service life in demanding street and race environments
• Simple Installation – Direct replacement design for easy installation with compatible wideband systems