SpeedFactory Radiator Filler Neck An16 Outlet D16 51320-S84-A01 but keeps the rocker pads

but keeps the rocker pads up against the camshaft’s base circle

This flywheel is machined with less material to assist in quicker revving

It supports vehicle/system voltages up to 16V

Simply stick it to the oil pan to block the heat from the exhaust and prevent the oil temperature from rising

SpeedFactory Radiator Filler Neck An16 Outlet D16 51320-S84-A01 but keeps the rocker padsWhether you have a custom radiator or a SpeedFactory Race Tucked radiator, you need a proper way to fill your engine's cooling system from the highest point and we have the solution. SpeedFactory Racing D Series Upper Coolant Fill Necks are compatible with most aftermarket radiator setups, and change the high point of your cooling system for easy filling and system air bleeding. Our necks are manufactured in house using high quality aluminum materials