Parts from Rallye Enterprises, Ltd.
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. The 152-18 is a painted cap; the same
cap in a chrome version is 152-19.