Sometimes it seems to be just impossible to bleed or vent all of the air out of the heater system. This item is 3.5" (90mm) long & can be inserted in a straight section of the heater hose at a conveniently high position to vent any air. O.D. of the tails is 13mm. Similar to AR # 1493.90.207? Made in England exclusively for AlfaStop.
 
Part Name: Heater System Hose Bleed (Vent) Valve T-Piece
AlfaStop Product Code: 1CS147
Original Alfa Romeo Part No: 1493.90.207
Model: Guilia 101 Series, Giulietta 750 & 101
Quantity Per Car: 1