I’m looking to upgrade/replace my stock muffler and am having a hard time finding what inlet outlet size to buy (I assume it needs to be the same as the stock exhaust piping) does anyone know what the stock exhaust pipe size/ inlet outlet I will need for a 2010 F150 2V 4.6?

any help is greatly appreciated!

 

Walker says 2 1/2 in and out, Eastern says 2 1/2 in and 2 3/4 out. It's a 1 piece welded system behind the Y-pipe. Best thing to do is get underneath with a set of calipers and measure it. The best option if you are going to do the work yourself is buy a whole cat-back system. If you just want to replace the muffler, go to an exhaust shop, they don't charge all that much and they have the tools to make just about anything fit.

 

The cheapest option is a local muffler shop.

 

 

The muffler should not be larger. You would probably be safe with a 2 1/2 in and out, most aftermarket mufflers are shorter than the OEM and the shop will have to weld up some pipe anyway.

Why don't you get a quote from a muffler shop to do the job right with their parts? My local shop charged me $240 for a SI/DO glasspack and custom bent dual pipes to behind the rear wheels, along with stainless steel tips. Lifetime muffler warranty, 1 year warranty on the pipes.

 

I totally agree with glc.

I was going to say that earlier. Likewise it's good practice to support your local businesses.

I try to stay local when I can, even at my gov't job, I try to select local businesses for procurement.