Description Detailed Specs Downloads Reviews Description RAM MOUNT, RAM MNT GARMIN GPSMAP 78 Detailed Specs MFG Part Number RAM-B-138-GA40 Product Type Accessory configuration RAM MOUNT, RAM MNT GARMIN GPSMAP 78 null null null null null null null null null null Downloads Reviews The Ram Mounts RAM-B-138-GA40 is also known as RAM -RAMB138GA40 or RAMB138GA40