C63 combination valve replacement
How easy is it to change the part circled. It’s the combination/air valve...
This is just a stock picture. My engine has everything in situ.
Many thanks 🙏🏽




Just did it last week to finish off the smog pump removal from a year or two ago. Removing them isn’t difficult. Just move the power steering reservoir and unbolt them really. The problem is the drivers side pipe that goes to the head exhaust side. It WILL NOT come out unless you move the power steering pump. So that’s what I’m working on now and it’s not very straightforward. When I figure it out I’ll post up any tricks, but the bolts on the backside are a ***** to get at.
You can get blockoff plates from VRP if you don’t mind dealing with them. You can also just make a couple out of sheet aluminum or fill the hole with JBWeld like Jasonoff did.
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