3-1/2in Collecter Gasket 3-Hole

The TRANS-DAPT 3-1/2 Inch Collector Gasket 3-Hole (MPN 4466) is a precision-engineered sealing component designed for high-temperature exhaust manifold applications. Built with a 3.5-inch diameter and 0.063-inch thickness, this gasket features a steel core laminate construction that delivers reliable sealing under sustained heat cycles typical of engine exhaust systems. The three-bolt mounting pattern ensures proper alignment and clamping force distribution across the gasket face.

The steel core laminate design is critical for performance in this application. The composite construction resists blow-out failures common to softer gasket materials when exposed to repeated thermal expansion and high-pressure exhaust gases. The 0.063-inch thickness provides sufficient material density to accommodate minor surface irregularities on both the manifold and cylinder head without sacrificing clamp load integrity. This specification balances compressibility with long-term dimensional stability—factors that directly impact exhaust gas containment and engine efficiency.

This collector gasket serves engine builders, performance shops, and DIY enthusiasts undertaking manifold service, header installation, or exhaust system upgrades. Whether rebuilding a stock engine or fabricating a custom exhaust system, proper gasket specification prevents exhaust leaks that degrade horsepower, increase underhood temperatures, and create noise. The TRANS-DAPT gasket is engineered to OEM or equivalent performance standards and fits domestic and import applications using three-bolt collector flanges.

TRANS-DAPT is recognized for manufacturing gaskets and sealing solutions that meet or exceed original specifications. This individual gasket (each unit) is a replacement component suitable for single manifold work or as a spare for systems already in use.