Motordyne G35 & M35 5/16″ Basic Plenum Spacer
At the optimum height and yielding the best overall gains, the Motordyne 5/16″ plenum spacer outperforms the competition and conveniently keep your engine cover and strut bar in place. This stealth modification adds 11HP-13HP and is the simplest to install. All Motordyne melt proof plenum spacers come with pre-attached, high quality gasket