-9%
  • Trusted by Racers

    Professional-grade parts used trackside.

  • Real Support, Real People

    Expert help during business hours.

  • Secure Shopping

    Encrypted checkout & trusted payments.

  • Fast U.S. Shipping

    Orders ship quickly from regional warehouses.

AEM - X-Series Digital Wideband UEGO AFR Gauge – 52 mm (Bosch LSU 4.9)

AEM
aem30-4110
In stock
Wideband Gauges
$224.95 $203.99
The AEM 30-4110 Digital Wideband UEGO Gauge provides real-time, precise air/fuel ratio (AFR) data essential for...
$203.99

AEM - X-Series Digital Wideband UEGO AFR Gauge – 52 mm (Bosch LSU 4.9)

The AEM 30-4110 Digital Wideband UEGO Gauge provides real-time, precise air/fuel ratio (AFR) data essential for tuning and monitoring engine performance. Using the advanced Bosch LSU 4.9 sensor, it delivers faster response times, reduced current draw, and greater accuracy—no free-air calibration required.

This compact 52 mm digital gauge features an easy-to-read LED display with a color-changing sweep indicator that transitions from rich to lean for at-a-glance data. Designed for use with gasoline, E85, or methanol, it’s perfect for performance tuning, racing, and engine diagnostics. Integrated controller circuitry simplifies installation while ensuring reliable readings.

Features:

  • Bosch LSU 4.9 sensor for ±0.1 AFR accuracy and fast response

  • No free-air calibration required—factory-calibrated for reliability

  • Digital LED display with color-sweep indicator

  • Integrated controller and gauge in one compact unit

  • Supports multiple fuel types (gasoline, ethanol, methanol)

  • 52 mm diameter fits standard gauge pods

Read More
Read Less

Shipping

Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.

Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.

Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.

Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

Your cart

×