Metra MT99-9300 Single DIN Radio Fascia Kit To Suit BMW 3 Series/M3 1997-2005 12" active subwoofer enclosure What is the difference between

What is the difference between the 58AM3 and the standard 58AM

Suitable applications:

the P1572 fits 5"×7" and 6"×8" positions

Terminals: 2 Copper with Nut and Bolt

Screw mount with bracket: Secure mechanical fixing using the screw points in the supplied bracket reliable in high-vibration commercial vehicle and trailer environments

Metra MT99-9300 Single DIN Radio Fascia Kit To Suit BMW 3 Series/M3 1997-2005 12" active subwoofer enclosure What is the difference betweenHighlights: FEATURES: VEHICLE COMPATIBILITY: Highlights: FEATURES: KIT INCLUDE MOUNTING BRACKETS: YES COLOR: GREY FINISH Legendary Products & Support From Authorized Dealers When you choose Metra, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice: Expert Knowledge & Training Only authorized Metra dealers are factory trained