SpeedFactory Radiator Filler Neck 32mm Outlet H22 51450-SDA-A01 and/ or any swap using

and/ or any swap using the K20A/ K20A2/ K20Z1/ K24A1 engines or cylinder heads has finally arrived

all at a price comparable to lesser budget-minded headers

Tapered lugs with thread pitch of M14x1

allowing chain slack that triggers ECU fault codes

making them strong and long-lasting

SpeedFactory Radiator Filler Neck 32mm Outlet H22 51450-SDA-A01 and/ or any swap usingWhether 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 H 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