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3L (3277cc) Front Bore: 1
you will need to select if you want the full 4
CBK0498SS - 1981 Pontiac Firebird
so it is only active when making boost
(1999-2013) GM Truck 1500 2500 Billet Vacuum Supply Port Fitting on 3 ypipe 3L (3277cc) Front Bore: 1This fitting bolts in place where your factory EVAP line returned to the intake. After building countless turbo Silverado and Sierra trucks, we wanted to figure out a cleaner way to get vacuum boost reference to the needed accessories. Whether that be a vac boost gauge, wastegate, blow off valve, etc, this fitting will allow you to easily route a line neatly to a vacuum block. Its machined with a 8an male outlet so you are able to run either a 8an
