Tappet Block Gaskets for Harley Panhead, Shovelhead & EVO, Replaces 18633-48 & 18634-48, Harley Evo Lifter Block Gasket Front & Rear for Classic Harley Engines, Oil-Resistant

Restore the performance and integrity of your vintage Harley with Street Sport Industries’ Tappet Block Gaskets—precision-engineered to fit Panhead, Shovelhead, and EVO engines. Designed to replace OEM part numbers 18633-48 and 18634-48, these high-quality gaskets offer an exact fit for both front and rear tappet blocks, helping eliminate oil leaks and improve engine efficiency. Crafted from durable, oil-resistant materials, these gaskets are built to withstand the extreme heat and vibration common in classic Harley V-twin engines. Whether you're performing a full restoration or routine maintenance, you’ll get the long-lasting seal you need to keep your engine running strong and clean. Easy to install and ideal for home mechanics or professional shops, this gasket set provides a hassle-free upgrade for riders who demand quality and reliability. From Panhead builds to Shovelhead refreshes, trust Street Sport Industries to deliver dependable performance with every ride.

• 🏍️PRECISION FIT FOR PANHEAD, SHOVELHEAD & EVO ENGINES – Designed to directly replace OEM part numbers 18633-48 and 18634-48, these tappet block gaskets provide a snug, leak-free fit for both front and rear blocks. Engineered for compatibility with classic Harley-Davidson models, they restore proper sealing to help reduce oil leaks and keep your engine running cleaner and more efficiently.
• 🏍️BUILT WITH DURABLE, LONG-LASTING FOAMET MATERIALS – Made to meet the demands of vintage V-twin engines, these gaskets are crafted from high-quality, oil-resistant materials that stand up to heat, pressure, and vibration. Whether you're restoring an old Panhead or keeping a Shovelhead in top condition, you’ll get dependable performance ride after ride.
• 🏍️SEALS TIGHT TO REDUCE OIL LEAKS – Proper sealing of tappet blocks is critical to engine performance, and worn gaskets are a common cause of slow leaks and lost compression. These replacement gaskets help lock in oil flow, prevent seepage, and improve pressure retention, supporting smoother operation and longer engine life.
• 🏍️QUICK INSTALLATION FOR DIY OR PRO BUILDS – Engineered for easy handling, these tappet block gaskets are simple to install, making them perfect for at-home mechanics or professional shops. No need for complex tools or excessive prep—just remove the old gaskets, clean the mating surface, and install with confidence.
• 🏍️IDEAL FOR VINTAGE HARLEY RESTORATIONS – Whether you're maintaining a daily rider or restoring a collector’s Harley, these Street Sport Industries gaskets are a smart upgrade. They provide reliable performance and OEM-level fitment for classic builds, giving vintage bike owners peace of mind with every mile.