Skip to Product Info
    • AEM Bosch LSU 4.9 Wideband UEGO Replacement Sensor, 0.1 AFR Accuracy | 30-2004
    • AEM Bosch LSU 4.9 Wideband UEGO Replacement Sensor, 0.1 AFR Accuracy | 30-2004
    Sale!

    AEM Bosch LSU 4.9 Wideband UEGO Replacement Sensor, 0.1 AFR Accuracy | 30-2004

    Vendor: AEM Electronics
    Part Number: 30-2004
    Save $35.59
    Sale Price $140.36 Regular Price $175.95

    In Stock

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
    Payment & Security

    Secure, encrypted checkout. Card details go straight to the payment processor and are never stored by us.

    • Amazon
    • American Express
    • Apple Pay
    • Diners Club
    • Discover
    • Google Pay
    • Mastercard
    • PayPal
    • Shop Pay
    • Venmo
    • Visa
    Share to:

    AEM's Bosch 4.9LSU wideband UEGO O2 replacement sensor kit includes only the sensor, with attached cable and male connector, intended to replace an existing mounted wideband sensor used with an AEM wideband air/fuel UEGO controller. Each sensor has a laser-etched, calibrated resistor in the connector body that is specifically matched to that sensor; modifying it invalidates the sensor's output. The sensor is laboratory-calibrated at the Bosch factory, accurate to 0.1 AFR, and never requires free-air calibration when used with an AEM wideband AFR controller.

    Warranty

    Specifications:

    • Bosch 4.9LSU wideband UEGO O2 sensor, replacement sensor only
    • Laser-etched, factory-calibrated resistor matched to the specific sensor
    • Laboratory-calibrated at the Bosch factory, accurate to 0.1 AFR
    • Never requires free-air calibration when used with an AEM controller and connector plug
    • Sealed, welded housing is virtually impervious to automotive fluids
    • Connector and pins included
    • Part Number: 30-2004

    FAQ

    What is included with the AEM 30-2004 sensor?

    It includes only the Bosch 4.9LSU sensor with attached cable, male connector, and pins -- intended as a replacement for an existing mounted wideband sensor.

    Does the replacement sensor need calibration?

    No, it is laboratory-calibrated at the Bosch factory to 0.1 AFR accuracy and never needs free-air calibration when used with an AEM controller.

    Can the connector's resistor be modified?

    No, the laser-etched resistor is specifically matched to that individual sensor; modifying it will invalidate the sensor's output.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

    Recently Viewed