TCI TH400 Spring Pressure Regulator 935026 micron-sized openings to allow air

micron-sized openings to allow air in while filtering out the grime that will eventually clog an air filter or breather

Ford 9 in Center Section

2010-2012 Toyota Corolla XRS

Valve stem holes are placed behind the center to prevent air leaks during wheel-to-wheel racing

Black and Graphite Grey colors look sharp not like ratty yellowed underwear

TCI TH400 Spring Pressure Regulator 935026 micron-sized openings to allow airTH400 Pressure Regulator Spring. This Spring replaces the spring on TH400 Pressure Regulators. TCI Replacement Springs For High Spring Springs, see 221600. For High Spring Springs, see 221600. You've invested in horsepower. Now get it all to the ground with TCI. TCI's track tested Transmissions, torque converters and components can turn that muscle into rear wheel power. Designed, built and tested by hardcore racers and enthusiasts, TCI Transmission