Stainless Works SBF Stock Rectangular Shaped Port 304SS Exhaust Flanges 1-3/4in Primaries (2in BP)

If you're fabricating custom headers for your Small Block Ford, these exhaust flanges from Stainless Works are a solid starting point. They're designed to match the stock rectangular port shape, making them a good choice when you need to replicate factory port locations or work with existing manifold designs. These are built for 1-3/4 inch primaries, with a 2 inch bolt pattern measured center-to-center.

What sets these apart is the material and how they're cut. They're made from heavy-duty 3/8 inch thick 304 stainless steel. This thickness and the stainless alloy help prevent warping, even when things get hot during welding and initial engine break-in. The laser-cut process ensures a clean, precise edge for a good seal against your cylinder head or collector.

You get a pair of these flanges, ready for your custom exhaust build. They come with a limited lifetime warranty from Stainless Works, so you can be confident in their durability.