Alum SBF Collectr Gasket 2.50in Dia.

The Alum SBF Collectr Gasket 2.50in Dia. by Mr. Gasket is a precision-engineered aluminum exhaust collector gasket designed for high-performance and motorsport applications where seal integrity directly impacts engine efficiency and longevity. This component is essential for anyone running a custom exhaust manifold or collector system who demands reliable, repeatable sealing without compromise. Built to OEM and aftermarket standards, this gasket eliminates compression leaks that degrade horsepower and increase emissions.

Manufactured from aluminum with a nominal thickness of 0.12 inches, the Alum SBF Collectr Gasket features a 2.5-inch diameter bore and a secure 3-bolt fastening pattern that resists vibration-induced separation during sustained engine operation. Aluminum construction provides superior thermal conductivity and weight savings compared to composite materials, while the precision-ground sealing surfaces ensure metal-to-metal contact that withstands extreme exhaust temperatures and pressure cycles. This pair includes two gaskets, allowing for complete collector-to-header sealing on dual-bank configurations or replacement of both sides simultaneously for balanced performance.

Ideal for small-block Ford (SBF) engines and compatible Ford motorsport platforms, this gasket is commonly used by circle-track racers, street rod builders, and performance enthusiasts who require OEM-grade reliability during dyno sessions and high-RPM competition. Installation requires removal of the collector flange or manifold outlet, cleaning of both sealing surfaces to bare metal, and torque-sequencing bolts to manufacturer specification to ensure even clamping load and maximum seal life. Proper installation of matching gasket pairs prevents reversion losses and maintains backpressure tuning across the entire exhaust system.