The top of the adapter is machined to accept a #10AN hose end to facillitate the installation of a custom crank case evacuation system, PCV system, or for use with a vacuum pump. Total adapter length is about 1.8", with about 1.25" above the flange of the cover.
Beefcake Racing is an Authorized Dealer for Metco Motorsports, call 1-855-827-7223, 9am-9pm EST
METCO PARTS ALSO CONSIDERS THEIR PARTS RACE PARTS AND THEY DO NOT ACCEPT ANY RETURNS ON ANY ITEM THAT THEY SELL.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov