16pcs Rubber Positive Valve Stem Seal - Fits an 11/32" Valve Stem and a .562" Guide O.D., Valve Seals For SBC BBC BBF SBF, Positive Seal

The Street Sport Industries 16pcs Rubber Positive Valve Stem Seal is built for precision fit and long-lasting performance in small- and big-block engines. Designed to fit 11/32" valve stems and a .562" guide O.D. (.298" stem and .551" guide range), these valve stem seals provide a secure, exact fit for both standard replacements and high-performance rebuilds that require durability and tight tolerances. Featuring a positive seal style, the rubber seal ring and band design deliver effective oil control by preventing oil from leaking into the combustion chamber, resulting in cleaner combustion, reduced emissions, and improved engine efficiency. Manufactured from high-grade synthetic rubber, these seals withstand oil, heat, and combustion pressure in demanding environments, making them ideal for street, performance, and racing engines. For hassle-free installation, this kit offers direct OEM crossover compatibility with PEP #BVV895-A0, Qualcast #38-806-55, PEP #BVV895-VI, SBI #122-1221/1221221, and SBI #122-1387/1221387, ensuring factory-quality fitment. With broad application coverage, these valve stem seals are designed for SBC, BBC, BBF, and SBF engine setups, including AMC 1960 engines, Ford 1963–1968, and Mercury 1963–1968. They are also compatible with select Case, Chrysler Marine, Cummins, Detroit Diesel, IHC Tractor, Komatsu, Mercury Marine, Nissan Industrial, and OMC Marine engines. Combining robust materials, precision engineering, and a proven positive seal design, Street Sport Industries valve stem seals provide reliable sealing power that won’t break down under pressure—making them a trusted choice for builders and engine enthusiasts alike.

• 🔵ENGINEERED FIT FOR 11/32” VALVE STEMS AND 0.562” GUIDE O.D.: Designed with precision dimensions including a .298" stem and .551" guide, these valve stem seals provide excellent compatibility for SBC and other engine types. Each valve stem seal ensures a secure fit, making it ideal for standard valve seals replacement or performance rebuilds that demand tight tolerance and durability.
• 🔵POSITIVE SEAL STYLE FOR EFFECTIVE OIL CONTROL: Featuring a positive seal design, our valve stem seals effectively prevent oil from leaking into the combustion chamber. The rubber seal ring and band style enhances oil metering and reduces unwanted emissions. These valve stem seals support cleaner combustion and improved engine performance in both stock and high-output engines.
• 🔵DIRECT OEM CROSSOVER FOR HASSLE-FREE INSTALLATION: Compatible with PEP# BVV895-A0, Qualcast# 38-806-55, PEP# BVV895-VI, SBI# 122-1221, 1221221, 122-1387, 1221387, this valve stem seal kit serves as a reliable direct-fit replacement. The included valve seals are engineered to meet or exceed factory specs, making this valve stem seals replacement kit a solid option for SBC engines rebuilds.
• 🔵VEHICLE-SPECIFIC FIT: This valve stem seal kit fits SBC BBC BBF SBF setups, offering wide application coverage for builders working on street or performance engines. Built to match AMC 1960 engines, Ford 1963-1968, as well as Mercury 1963-1698. These valve stem seals are also compatible with select Case, Chrysler Marine, Cummins, Detroit Diesel, IHC Tractor, Komatsu, Mercury Marine, Nissan Industrial, and OMC Marine engines.
• 🔵HEAVY-DUTY MATERIALS RESIST OIL, HEAT, AND PRESSURE: Manufactured using high-grade synthetic rubber, these standard valve seals provide long-lasting sealing power under high-stress conditions. Each valve seal is precision-made to handle oil, heat, and compression in demanding performance or racing environments. A smart choice for anyone needing reliable SBC, BBC, BBF, & SBF valve stem seals that won’t break down.