No

Is it much to change them or should I probably just wait till spring to do it since the boat is already winterized?

The 2 clamps that hold the heat exchanger to the crossover are adjustable then. Are they hose clamp type or something else?

hose clamp. it's cake. just do it.

How much coolant do you loose when you pop it off and did you take off the intake hose to the exchanger and the out let lines to the manifold?

I did mine in the spring and it was leaked down (over the winter) to the level the seals are at.

can't remember what it took to fill it back up to the cold line on the tank 1-1.5 gals I think. No biggie, it's cheap enough.

I think I only unhooked the raw water hoses. You don't have to lift it very far.

Ok how about this I was checking my oil in my 496 ho and antifreeze starting gushing out. The seal between the heat exchanger and cross over split. I actually superglued together to make it home the next day. No big deal right things happen... I installed the new seal on both sides while I had it up. That day a hour and a half of running my engine shuts down??? Same seal split again, this time I had a spare and antifreeze so I had to do a repair in the Gulf of Mexico.. Now thats a little much I have a call to dealer to see if 525 or 600 hp engines might have better part.

I may have missed so but i'll ask. Anyone have the P/N for the upgraded seals? Mine leaked down over winter also.

I think this just happened to me my tank is empty scared to death i winterized it good im hoping its the seal part numbers anyone?? its on a 02 496 ho

Should be #26-865066