There are two styles of radio cages for the C4 UrS (and 100s and A6s). One has a 190 mm wide aperture for a normal width DIN head unit, like the BOSE Gamma. This leaves space on either side for the mirror control switch and the cigarette lighter. The other one has a 220 mm wide aperture for a head unit with a DIN chassis but a wider face plate like the Delta radio in the 95.5 and up UrS6 and the 96 and up A6s.
Here are the PNs:
Here is what the narrow 4A0857007E cage looks like empty:
Here what the same cage looks like full, in this case with the automatic climate control head and a Gamma BOSE (Std. DIN chassis, std. DIN faceplate) in a 93 UrS4 (with aftermarket "CF" trim on climate control surround and ashtray):
Here is what a wide aperture 4A0857007D (LHD) cage looks like empty:
Here is an example of a wider face plate head unit, in this case one of the clearout Delta BOSE headunits from the 95.5 (96 Model Year) and newer C4 UrS6s and A6s. Note: the radio chassis is still the 180 mm DIN standard width; it is only the faceplate that is 220 mm.
Here is what the wider 4A0857007D radio cage looks like loaded with the vents, the switches, the wider radio (in this case, a Delta BOSE) and the climate control system headunit (my 98 C4 A6q avant but UrS6 (LHD) would look much the same):
The wider cage allows the potential to upgrade to the single height Concert and Concert II headunits.
Info regarding OE Audi Radios is available HERE
Here are the PNs:
Here is what the narrow 4A0857007E cage looks like empty:
Here what the same cage looks like full, in this case with the automatic climate control head and a Gamma BOSE (Std. DIN chassis, std. DIN faceplate) in a 93 UrS4 (with aftermarket "CF" trim on climate control surround and ashtray):
Here is what a wide aperture 4A0857007D (LHD) cage looks like empty:
Here is an example of a wider face plate head unit, in this case one of the clearout Delta BOSE headunits from the 95.5 (96 Model Year) and newer C4 UrS6s and A6s. Note: the radio chassis is still the 180 mm DIN standard width; it is only the faceplate that is 220 mm.
Here is what the wider 4A0857007D radio cage looks like loaded with the vents, the switches, the wider radio (in this case, a Delta BOSE) and the climate control system headunit (my 98 C4 A6q avant but UrS6 (LHD) would look much the same):
The wider cage allows the potential to upgrade to the single height Concert and Concert II headunits.
Info regarding OE Audi Radios is available HERE
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