TB6010 - SB01A. This Tomei manifold is a great fit for Subaru Impreza WRX STi from 2002 to 2021, including models like GDB C - G/GRB A - D/GVB C - D. It features equal length runners and a twin - scroll design, made of SUS304 stainless steel with a 4 - 2 - 2 layout. The 8mm piping thickness, 42.7mm main piping diameter, and 45mm up pipe diameter ensure great performance. It comes with gaskets, hardware, and a heat wrap. We've always focused on performance, reliability, and quality when designing headers. This new model is compatible with GDB, GRB, and GVB, using the best of Tomei exhaust technology to offer balanced performance in power, torque, and driving feel.




Using this Tomei manifold is straightforward. First, make sure your vehicle is a compatible Subaru Impreza WRX STi from 2002 - 2021. The included gaskets, hardware, and heat wrap are there to help with a proper installation. When installing, follow the standard procedures for exhaust manifold installation. As for maintenance, keep an eye on the stainless - steel construction. Check for any signs of corrosion or damage regularly. If you notice any issues, address them right away. Also, make sure the heat wrap is in good condition as it helps with performance and protects other components. Avoid using harsh chemicals on the manifold. With proper use and maintenance, this manifold will serve you well for a long time.