What is the exhaust flange bolt size on a 2.2 s10?

There's no single answer to the exhaust flange bolt size for a 2.2L S10. The size depends on the year of the truck and even the specific exhaust manifold and pipe configuration (factory vs. aftermarket). The bolts could be 7/16", 1/2", or even 9/16" in various lengths.

To know for sure, you need to:

* Look at the bolts themselves: The easiest way is to remove one bolt and measure it. Take note of both the head size (e.g., 7/16") and the thread length.

* Consult a repair manual: A factory service manual specific to your year and model S10 will list the correct bolt sizes.

* Check online parts diagrams: Websites like AutoZone, Advance Auto Parts, or RockAuto often have parts diagrams you can browse by entering your vehicle's information. These diagrams may show the bolt size.

Don't rely on generic information; always verify the bolt size on your specific vehicle before purchasing replacements. Using the wrong size bolt can lead to leaks or damage.