Save yourself some headaches by using TA’s PCV Grommet with any intake change. Most parts stores don’t carry the Buick grommet or the ones they do offer are too hard, making it extremely difficult to install the PCV valve. Also save yourself the aggravation of trying to transfer a brittle used grommet from your old intake manifold. Fits V6, 350 & 400-430-455.

Also fits Nailhead w/ aluminum valve covers.