The white piece itself is a coupling on the hose, however I cannot find it listed anywhere?
The return tube (toward the rear of the car) is shown in this diagram from the shop manual:
The frontmost hose is called the EVAP canister purge tube...
- 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum, Delta Force tuned,
Steeda UDPs, Ralco flywheel, RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.
New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq