2 bolt flanges are most commonly used on smaller-diameter mid-pipe and tailpipe joints rather than manifold connections, which typically use a 3 bolt pattern for extra security under higher heat and vibration. Sizing is based on pipe outside diameter, so measure your existing pipe before ordering to get a proper fit. See our full exhaust flanges range if you need a different bolt pattern.

Where are 2 bolt flanges typically used?

They're commonly found on smaller-diameter mid-pipe and tailpipe joints rather than manifold connections, which usually use a 3 or 4 bolt pattern for extra strength.

What sizes do 2 bolt flanges come in?

Sizes vary by pipe diameter, so measure your existing pipe's outside diameter before ordering to make sure the flange fits correctly.

Do I need a specific gasket for a 2 bolt flange?

Yes, use a gasket matched to the 2 bolt pattern and pipe diameter for a proper, leak-free seal at the joint.

Can I use a 2 bolt flange to join stainless and mild steel pipe?

Yes, the flange just needs to be welded on correctly, but be aware that mixing metals at a joint can accelerate corrosion over time compared to matching materials.