Help! With 2007 210 (w/pics)

[Tyler210]

I had my boat winterized last August by a dealer that removed all the necessary drain plugs. They put them all in a zip lock bag for me. This is my first time having to install the plugs and I'm having a hard time finding where they go. It's a 2007 210 with a 5.7L

I installed the 2 large plugs on the exhaust manifolds.
1 plug in the raw water v drive
1 plug in the water pump

Now I had 2 large black bolts that should go in the engine block somewhere but I have NO CLUE where. I also have 1 small black bolt that goes possibly to the transmission cooler which I also can't find.

Bolts in question

[Nautiquehunter]

The two big black things are Knock sensors they go on the lower sides of the block just above the oil pan. The small plug might be the one in the bottom of the muffler or the one at the lowest point of the circulating water pump cast hose assb. There are pics in the PCM maintenance manual.

[Rick]

Don't insulate the knock sensors

When you reinstall the knock sensors make sure you DON'T use any Teflon tape or other sealant. The sensor is really sensitive and needs to be in the black not insulated

[WakeSlayer]

Trans cooler should be on the driver's side running along the lower part of the engine. Follow your raw water intake scoop from the hull, that is the first place it goes. Or find your two transmission lines, they go to it.
Is it normal to have two knock sensors? I only have one on my Chevy. Port side, forward drain plug.

[Tyler210]

Ok....thanks everyone. I got it figured out. What a pain in the a$$ that was. I was literally face first into the engine cover hugging the motor. I finally found the holes and the knock sensors went right in. The tranny cooler bolt was also a major pain for the first time. I'm sure next season it'll be much easier. My 2007 has 2 knock sensors.

She is good to go! Ran like a champ!