GSC Viton Valve Stem Seals – Mitsubishi EVO X 4B11T – GSC1010
GSC Power-Division valve stem seals for the Mitsubishi 4B11T are crafted from genuine DuPont Viton® fluoroelastomer, engineered to handle the extreme heat and stress found in high-output sport compact engines.
These seals deliver enhanced resistance to elevated temperatures, fuel exposure, and chemical breakdown—making them ideal for high-rpm or long-mileage builds. GSC includes seals for both intake and exhaust valves in every kit, ensuring full coverage without compromise.
Built to outperform OEM materials at a fraction of dealership pricing, the GSC1010 seal set is a smart upgrade for any EVO X valvetrain refresh or performance build. Sold as a complete set of 16.
Fitment:
- 2008 Mitsubishi Lancer Evolution X 2.0L Turbo 4B11T
- 2009 Mitsubishi Lancer Evolution X 2.0L Turbo 4B11T
- 2010 Mitsubishi Lancer Evolution X 2.0L Turbo 4B11T
- 2011 Mitsubishi Lancer Evolution X 2.0L Turbo 4B11T
- 2012 Mitsubishi Lancer Evolution X 2.0L Turbo 4B11T
- 2013 Mitsubishi Lancer Evolution X 2.0L Turbo 4B11T
- 2014 Mitsubishi Lancer Evolution X 2.0L Turbo 4B11T
- 2015 Mitsubishi Lancer Evolution X 2.0L Turbo 4B11T
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

