Originally
on 63 1500's and on later1500s and 1600's destined for areas
not subject to crankcase emission requirements. Cap sits up
off of valve cover and has a screened vented area on the
underside. Engines that used this also had crankcase vent
tube in place of the freeze plug in the left rear of the
engine block.
Fairlady
Parts from Rallye Enterprises, Ltd.