0258017025 LSU 4.9 Lambda WideBand O2 Oxygen Sensor for PLX AEM 30 4110

This LSU 4.9 Lambda WideBand O2 Oxygen Sensor is a high-performance wideband oxygen sensor compatible with PLX and AEM 30-4110, 30-0300 wideband controllers and matches OEM Part# 0258017025.

Product Overview

The LSU 4.9 Lambda WideBand O2 Oxygen Sensor delivers fast, accurate air/fuel ratio measurements for engine tuning and monitoring. This LSU 4.9 WideBand O2 sensor is the direct replacement for AEM 30-4110 and 30-0300 gauge kits and PLX wideband systems. Built with a genuine Bosch LSU 4.9 sensing element, it provides reliable lambda readings for performance enthusiasts and professional tuners.

Key Features & Performance

• Bosch LSU 4.9 wideband element for precise air/fuel ratio measurement
• Faster response time and higher accuracy than older LSU 4.2 sensors
• Pre-calibrated for AEM X-Series (30-0300) and analog (30-4110) gauges
• Plug-and-play connector matches AEM and PLX wideband harnesses
• Wide measurement range supports gas, ethanol, and methanol fuels
• Durable stainless steel construction for long service life

Fitment & Compatibility

• AEM X-Series Wideband UEGO Gauge (30-0300)
• AEM Analog Wideband Air/Fuel Gauge (30-4110)
• PLX Wideband Controllers (DM-6, SM-AFR, and others using LSU 4.9)
• Many standalone ECUs and datalogging systems accepting Bosch LSU 4.9

Common Uses

• Real-time air/fuel ratio monitoring during dyno tuning
• Closed-loop fueling control with aftermarket ECUs
• Street and track performance tuning for turbo or supercharged engines
• Replacing old or failing widebands in AEM or PLX gauge kits
• Data logging AFR for engine diagnostics and optimization

Technical Specifications

• Part Number(s): 0258017025
• Sensor Element: Bosch LSU 4.9
• Thread Size: M18 x 1.5

Frequently Asked Questions

Q: Is this sensor plug-and-play with my AEM gauge? A: Yes, it is a direct replacement for AEM wideband gauges part numbers 30-4110, 30-0300, and other controllers using Bosch LSU 4.9 sensors.

Q: Can this sensor be used with a different brand wideband controller? A: It is designed for Bosch LSU 4.9 compatible systems; ensure your controller accepts LSU 4.9 sensors and has the correct connector.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.