SpeedFactory Racing Honda/Acura B-Series Race Cooling System Fill Pots (-16AN / B18C1/GSR) SpeedFactory:Default Title 5mm Viton valve stem seals

5mm Viton valve stem seals deliver OEM-equivalent performance for Honda intake applications

complex dome and crown shapes

The compact design integrates seamlessly with most vehicle frames

these lightweight titanium studs deliver superior heat resistance and durability compared to standard steel fasteners

The carefully profiled skirt minimizes friction while withstanding extreme combustion pressures—essential for reliable performance in turbocharged and supercharged K-series builds

SpeedFactory Racing Honda/Acura B-Series Race Cooling System Fill Pots (-16AN / B18C1/GSR) SpeedFactory:Default Title 5mm Viton valve stem sealsSpeedFactory's billet thermostat housing delivers precision cooling management for engines. Machined from high grade aluminum, this component replaces restrictive OEM designs with superior flow characteristics and reliability. The port configuration integrates seamlessly with custom cooling systems and aftermarket setups. Built to withstand elevated boost pressures and sustained performance driving, it maintains consistent coolant temperatures under