Metra 40-HD20 Honda Acura Mazda Reverse Antenna Adapter 2005-Up

The Metra 40-HD20 Antenna Adapter is designed for select Acura, Honda, Mazda, Suzuki, and Toyota vehicles. It provides the antenna connection needed when using an aftermarket antenna with the original factory radio.

At a Glance

• Vehicle-specific antenna adapter for select Acura, Honda, Mazda, Suzuki, and Toyota vehicles
• Supports using an aftermarket antenna with the original factory radio
• Female Motorola connector with blue wire lead to male Honda-style antenna connector
• Helps maintain the AM/FM antenna connection during radio, antenna, navigation, or FM-modulator integration
• Designed to avoid cutting factory antenna wiring when matched to the correct vehicle and radio configuration

System / Fitment Notes

• Reverse antenna adapter for retaining the factory radio while adapting an aftermarket antenna connection

Exact Vehicle Compatibility

Find your vehicle below, then match the model year and factory-equipment details in the same row. Factory radio, amplifier, navigation, trim, speaker location, and connector differences can change which installation parts are required. If anything differs, contact MCOR before ordering.

Fitment note: Year and model alone are not always enough to confirm compatibility. Match every factory-equipment qualifier shown for your vehicle, and contact MCOR Automotive if the radio, amplifier, navigation, speaker, camera, trim, or connector details are uncertain.

Installation Notes

• Confirm exact year, make, model, factory radio, antenna connector style, and radio being installed before installation
• Test-fit the antenna adapter and review manufacturer instructions before final assembly
• Additional dash kits, wiring harnesses, steering wheel control interfaces, or factory feature-retention parts may be required
• Professional installation is recommended for best results

What’s in the Box

• Antenna adapter cable

Technical Specifications

• Brand: Metra
• Model: 40-HD20
• Product Type: Antenna adapter
• Application: Vehicle antenna integration
• Connector Type: Female Motorola connector with blue wire lead to male Honda-style antenna connector

Identifiers & Packaging

• MPN: 40-HD20
• UPC: 086429137978
• Sold As: Each
• Included Components: Antenna adapter cable

Why Buy From MCOR Automotive

• Authorized retailer for the brands we sell
• Specialists in vehicle audio integration, radio replacement parts, and installation accessories
• 22+ years of professional automotive electronics experience
• Expert support for compatibility verification and proper setup