SpeedFactory Racing Honda/Acura B-Series Race Cooling System Fill Pots (32mm / B18C1/GSR)

SpeedFactory'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 demanding conditions. Essential for tuned engines where thermal management directly impacts power output and longevity.