My car is a '74 and that nipple is where the vent hose from the oil filler cap connects. Not sure if it's the same on a '72
Dennis
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.