AEM Digital Wideband UEGO AFR Gauge - 4.9 LSU Sensor

AEM Digital Wideband UEGO air/fuel ratio (AFR) controller and gauge in one, supplied with a Bosch 4.9 LSU wideband sensor and weld-in bung (PN 30-4110). The digital LED display and sweeping LED needle change color as AFR moves from rich to lean for accurate tuning feedback. A 0-5V analog output (2010-2020 AFR range) feeds data loggers and engine management, and the laboratory-calibrated sensor never requires free-air calibration. 52mm (2-1/16in) housing.

Specifications

Documents: Installation Instructions (PDF)

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy