SpeedFactory Thermal Intake Manifold Gasket – D16Z6 / D16Y8 SOHC VTEC Engines. SpeedFactory D16Z6,Y8 Thermal Intake Manifold Gasket SF-02-013. Thermal Research. Honda, OEM. With over 20+ years of experience in the automotive industry and a lifelong passion for motor sports, we have the knowledge and expertise to assist you with every aspect of your vehicle.