Fusion SM-X65SP3W SM Series Accessory White Three Surface Corner Spacer Pair Reverse LED Lights 163mm is the outer diameter

163mm is the outer diameter of the speaker

The radio works seamlessly with GME

0L N52 B30 AE DOHC 24V MPFI 6CYL 160KW 6SP AUTO 2DR CONVERTIBLE RWD <01/08 - 12/13> BRAKE PADS FRONT 1

Motobatt MB18U Specifications:

Fusion SM-X65SP3W SM Series Accessory White Three Surface Corner Spacer Pair Reverse LED Lights 163mm is the outer diameterFusion SM Series Accessory White Three Surface Corner Spacer Pair: Supporting Installation In A Variety Of Positions For A Professional Finish These optional mounting spacers allow you to install the SM Series speakers on your boat with versatility and ease supporting installation in a variety of positions for a professional finish. Similar to the SM Series speakers.