FlowTech Exhaust REAL-SEAL Header & Collector Gasket Sets

FlowTech REAL-SEAL header and collector gasket sets represent a genuine advancement in exhaust sealing technology, engineered to permanently eliminate the burn-outs and blow-outs that plague conventional exhaust gaskets. Whether tackling a high-performance build or a routine OEM header replacement, REAL-SEAL gaskets deliver a professional-grade, do-it-once sealing solution built to handle the demands of any exhaust application.

Dead Soft Aluminum Multi-Layer Construction:

• Multiple layers of dead soft aluminum conform to irregular and imperfect mating surfaces, creating a reliable, leak-proof seal where conventional gaskets fail
• Outperforms standard O-ring gaskets in applications where surface imperfections cause sealing failures
• Withstands extreme exhaust temperatures and repeated thermal cycling without degradation or blow-out
• Easily trimmable for port-matching, allowing custom fitment across a wide range of header configurations
• Reusable design — gaskets can be reinstalled during future header pulls without needing replacement

Professional-Grade Performance Features:

• True do-it-once installation philosophy reduces long-term maintenance costs and repeat labor
• Suitable for both high-performance race engines and stock OEM replacement applications
• Available in header flange and collector flange configurations to deliver a complete exhaust sealing solution
• Part of the Holley Performance family of brands, backed by decades of exhaust engineering expertise

About FlowTech Performance Exhaust:

Founded in 1994 with a mission to deliver high-quality performance exhaust at exceptional value, FlowTech has grown into a recognized leader in the performance exhaust market. FlowTech innovations include slotted port flanges for easier header installation, dimpled tubes for improved header bolt clearance, and parallel-ground flanges for a consistently tight seal. Since joining the Holley Performance Products family, FlowTech has continued to expand its lineup across a broad range of domestic cars and trucks. The REAL-SEAL gasket line embodies that same commitment to engineering excellence — delivering a durable, long-lasting exhaust seal that professional installers and enthusiasts alike can rely on.