GSC Power-Division GR Corolla Viton Valve Stem Seals - GSC1032

Overview

Upgrade your engine’s valvetrain reliability with the GSC Power-Division GR Corolla Viton Valve Stem Seals (GSC1032) — a high-performance replacement set engineered for the turbocharged 1.6 L G16E-GTS engine found in the Toyota GR Corolla (GZEA14). 

Viton’s superior thermal and chemical resilience is a common upgrade choice among performance enthusiasts who push boosted engines harder than stock conditions allow. These seals maintain a tighter seal through extreme temperature cycles and higher RPM operation — ideal for track use, performance tuning, or simply extending service intervals over OEM parts.

Key Features:

• Durable Viton Construction: Made from premium Viton fluoroelastomer, these valve stem seals deliver significantly improved resistance to heat, oil breakdown, and long-term wear compared with many OEM rubber seals — especially important in turbocharged and tuned engines.

• Direct OEM Fit: Designed to match the stock 5.5 mm valve stem diameter for a direct replacement — no modification required.

• Complete Set: Comes as a set of 12 seals (sufficient for intake and exhaust side on a 3-valve head).

• Enhanced Performance Reliability: Helps control oil from migrating past the valve stems into the combustion chamber, reducing smoking, oil consumption, and premature seal failure in high-stress conditions.

Compatibility

• 2023+ GR Corolla