Exhaust Gaskets 3 Bolt

Eliminate exhaust leaks and annoying "ticks" with our professional-grade 3-bolt exhaust gaskets. Essential for any custom fabrication or maintenance project, these gaskets are engineered to provide a gas-tight seal between your 3-bolt flange plates. Whether you are bolting up a set of extractors, a high-flow catalytic converter, or a rear muffler, our gaskets offer superior heat resistance and compressibility. Available in all common Australian exhaust diameters, from 2" (51mm) to 4" (101mm), these seals are the final step in ensuring your vehicle's performance and sound quality remain at their peak.

How do I know which 3-bolt gasket size I need?

The size is determined by the Inside Diameter (ID) of your exhaust pipe. If you have a 3-inch (76mm) exhaust system, you require a 3-inch 3-bolt gasket. It is also helpful to measure the distance between the bolt holes (center-to-center) to ensure alignment with your specific flange.

Can I reuse an old 3-bolt exhaust gasket?

We strongly recommend against reusing gaskets. Most 3-bolt gaskets are designed to compress once to create a seal. Once they have been heat-cycled and compressed, they lose their ability to "spring back," making them highly prone to leaking if reinstalled.

Do I need to use RTV or exhaust sealant with these gaskets?

While our high-quality composite gaskets are designed to seal "dry," a small amount of high-temp sensor-safe RTV can be used on older, pitted flanges to help fill minor imperfections. However, for new or machined flanges, a dry gasket is usually sufficient.

What causes a 3-bolt gasket to "blow out"?

The most common causes are loose flange bolts, warped flange plates, or excessive backpressure. Ensuring your bolts are torqued correctly and using a heavy-duty 10mm flange plate will significantly extend the life of your gasket.