are these made any more?
 

Air diverter for a clamp on exhaust... Hardin Marine said their replacement ram won't work and i can't find who made these. Thanks[ATTACH=CONFIG]551233[/ATTACH][ATTACH=CONFIG]551233[/ATTACH]

Here are the clamp ons.[ATTACH=CONFIG]551236[/ATTACH]

Check McMaster Carr, they have a ton of that stuff and 1/2 the cost.

I tried this year to find a set of cylinders to operate a set on my shelf. Yes McMaster Carr has something that will work, but not exactly the same. Issue here is that originally they are fitted like a double acting cylinder but have a return spring installed. The way they work is only single acting however and the backside port was piped inside the boat to keep water out of the cylinder when they sucked air back in when dump solenoid released. You can get very cheap throw away single acting cylinders that bolt right on but have only one port. There is a bleed hole for the back side only that could suck water in. Probably would last a few years and they are cheap enough to be disposable. If you get a double acting cylinder, you will need to figure out a way to pressure both sides to move the piston, or get an expensive rebuildable model and install a return spring on your own.

try looking up the company's Festo or Parker, they can get you what your looking for....just have to call them and tell them what your looking for.

They look like a CMI custom made to order muffler. Call Dave Rank at Custom Marine they have them in stock.

The ends caps will come off. It may not be easy to get them off, but they will come apart. Then just replace the O rings inside.

I have a Gaffrig muffler with an actuator like that. If you only need one, I may be able to help you. What are the dimensions?

Need 4. I ordered some for McMaster Carr so I'll see if the ones I've got coming will work. Thanks though.
The dimensions are:
6.44" retracted
8.44" expanded
3/4" bore
1/4 " shaft

Pick your poison,

http://www.bimba.com/Products-and-Cad/Actuators/Inch/

Jeff