This is the 5/16 Stealth Plenum Spacer Upgrade for the 03-06 350Z, 03-06 G35 Sedan, and 03-07 G35 Coupe VQ35DE Engines. Gains from 11-13HP, simple and easy install. Works with OEM Strut Bar and Engine Cover.
Please note: While longer bolts are included for the strut tower brace to clear the raised plenum, early 2003 models will require thinner bolts. These are not normally included with the kits from Motordyne, so we have added an option above to include an extra set of bolts for the 2003 MY.
Our new Compatibility checking feature is still being updated and revised. If you have questions about vehicle fitment, please contact us.
Does this come with a new gasket, or does that need to be ordered separately? If a new gasket is needed, which one would you recommend?
These use a pliable gasket material already fixed onto the spacer itself, so no additional gaskets are needed.