Car Radio Audio Stereo RCN210 For VW Golf MK4 POLO Passat B5 USB MP3 AUX SD Build-in Bluetooth with CD Player + Adapter With Canbus Simulator: Amazon.co.uk: Electronics & Photo
ECS News - VW MK4 Radio Upgrade
Wifi Android Car Stereo FM Radio With Backup Camera Fit 1997-2003 VW Golf ( MK4) | eBay
VW Golf MK4 Gamma Cassette Radio Tape Player Without Code 1J0 035 186 D£4.99