Rep Power: 0

Hello,
I notice the oil on the ground today, and open the hood, notice the oil on the left side and at bottom. I checked coolant, lower than "min" and I filled it up. Then I check the engine oil level, seems ok. It seems like the oil is spay from center, but mainly toward left.
Here is the picture: https://imgur.com/a/ejLs4n9

went to a shop, they inspect it for a few minutes and said both oil and coolant are leaking. need to replace the valve cover gasket ($100 parts+$100 labor) and thermostat housing ($50 part + $100 labor). I prefer to get parts from dealer (but let them keep the profit for the parts, shop don't allow.

Question:
1) is it diy work or it's better to let mechanic to work on it?
2) does dealer part matter that much?

Thank you!

 
Rep Power: 230

DIY for sure, and yes buy the parts from Honda, many of the aftermarket valve gaskets kind of fit but not really.

-Valve cover
https://www.youtube.com/results?sear...sat+2001+civic

-Thermostat housing