Wehrli 17-19 L5P Duramax Intercooler Outlet Boot Adapter - WCF205-190 This Billet Aluminum Beadroll Adapter Flange connects to the outlet (passenger / cold) side of the Intercooler. Adapts the OE slip/clip ring assembly to a precision machined bead roll joint allowing... MSRP: $59.00 Was: Now: $57.23