Have Questions?
Professional-grade parts used trackside.
Expert help during business hours.
Encrypted checkout & trusted payments.
Orders ship quickly from regional warehouses.
The AEM Power Harness (Part Number: aem30-3459) is designed as a direct replacement for the 30-0300 AFR gauge, providing reliable and versatile wiring solutions for automotive applications. This harness features three different communication protocols: Controller Area Network (CAN), Analog, and Serial, allowing for flexible integration with various vehicle systems. The extended wiring loom ensures compatibility with most setups, reducing the need for additional wiring and simplifying installation. Color-coded connectors further streamline the process, making it easier for technicians and enthusiasts to identify and connect the correct terminals quickly.
Constructed with high-quality materials, the AEM Power Harness ensures durability and consistent performance in demanding environments. Its compact design and lightweight construction facilitate installation in tight spaces without adding unnecessary bulk. The harness's compatibility with the AEM 30-0300 X-Series Wideband Gauge makes it an essential accessory for tuning and monitoring applications, ensuring accurate data transmission for optimal engine management. Whether upgrading an existing setup or installing a new gauge, this harness offers a seamless, reliable connection that enhances vehicle diagnostics and performance monitoring.
Designed for automotive professionals and enthusiasts alike, the AEM Power Harness combines ease of installation with robust functionality, ensuring your wideband gauge receives consistent power and signals. It adheres to industry standards, providing peace of mind and dependable operation in diverse vehicle configurations. Invest in the AEM Power Harness to ensure a secure, efficient, and professional-grade connection for your automotive gauge system.
Features:
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.
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).
