I've had my 5/16 Motordyne thermal plenum spacer kit on for about 5 years now and the lower manifold aramid gasket has developed a leak near the engine bay.
I plan on replacing it with an OEM gasket but my question is will I need a new gasket for the plenum spacer? I feel like original gasket material Motordyne puts on the spacer will probably be worn out.
Will I have to clean off the spacer and install a OEM gasket on the bottom and possibly a z1 plenum spacer gasket on top?
Vq35de

 

Will these work or will the stock plenum spacer gasket be reusable?

 

Zero experience with plenum spacer but plenty of experience with gaskets of every sort.

Rule of thumb: If you are going through the trouble of tearing something down that has a gasket, just replace it. Why not, to save money? You're gonna tear it down again to fix a leaking, used gasket. What's your time worth?

Never had a leaking gasket issue following this advice for the last five decades.

 

Thanks for the input, I usually have the same opinion but my main concern is that the Motordyne spacer comes with gasket material glued to the spacer.
​​​​​​I'll probably just but them all to be safe

 

This is one thing I will disagree with, if it's not leaking, leave it alone. It's basically the same aramid gasket bonded to the spacer (so you only have half the potential leaks).
I'm the second owner of the spacer and it's over 10 years old, I wouldn't hesitate to put it back on my car.
This it THE only style spacer I use and recommend using.

 

Thank you, that's good news. Im hoping the spacer will cling to the upper part of the plenum and hopefully not get damaged, but I bought a spare gasket just in case