🔵PRECISION FIT FOR GM LS-SERIES ENGINES: Designed for GM LS1, LS2, LS3, LS4, LS6, LQ4, LQ9, LM7, L59, LR4, LM4, L33, L76, L77, LY2, LY5, LMG, LMF, LY6, L96, LH6, LC9, LH8, and LH9 engines. Perfect fit for 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, and 7.0L LS applications. 🔵SUPREME QUALITY MATERIAL FOR EXTREME PERFORMANCE: Crafted from high-grade mterials for exceptional resistance to heat, oil, and fuel additives. Ideal for high-performance and heavy-duty engine builds that demand long-lasting reliability and maximum sealing power. 🔵TOP HAT METAL-CLAD DESIGN: Features a Top Hat style, single valve spring-compatible design that sits under the valve spring retainer for secure sealing. Ideal for LS engines with .313" valve stems and .500" guide O.D. Provides consistent oil control and prevents valve guide wear. 🔵OEM REPLACEMENT & INTERCHANGE COMPATIBILITY: Direct replacement for OEM Part #12482063, 8124820630, and interchangeable with SBI #122-1337, Qualcast #38-900-45, and Federal Mogul #71039. Matches VS-901V exhaust seal specifications for intake/exhaust compatibility. 🔵COMPLETE 16-PIECE SET FOR EASY INSTALLATION: Includes 16 metal-clad valve stem seals for complete engine coverage. Simple drop-in installation—no modifications or adjustments needed. Precision-engineered to meet or exceed OEM quality standards for professional performance. The Street Sport Industries Top Hat Valve Stem Seal Set (16 Pack) offers a professional-grade replacement for GM LS-series engines, including LS1, LS2, LS3, LS4, LS6, and all compatible 4.8L–7.0L variants. Each seal is built from Supreme material for outstanding resistance to oil, heat, and chemicals—ensuring long-lasting protection in both performance and daily-use engines. This metal-clad, Top Hat style seal fits an 8MM (.313") valve stem and a .500" guide O.D., matching OEM part number 12482063. Designed for LS engines with single valve springs, it maintains consistent lubrication, prevents oil leaks, and minimizes valve guide wear. With precision-engineered fitment and OEM-level durability, these valve seals provide superior sealing performance for intake and exhaust applications. Each kit includes 16 seals—a full set for complete engine rebuilds or replacements. Whether you’re upgrading a performance engine or maintaining OEM reliability, Street Sport Industries valve seals deliver the quality and endurance professionals trust.