I believe the Aux-Vent for 48 DRLAs is the same one as for 45s.
Hi,
not the same auxiliary vents between 48s and 45s , possible to made 45s aux-vents with 40s aux-vents P/N 10078.1 (not the 12189) by removing a big part of the ring
vents have the same OD (42mm) on 45s and 40s