PRW Power Stock Height Valve Covers Breather Hole Hardware Aluminum - Black Anodize - Aftermarket Heads 20-OTL-NB-ML but also virtually eliminates power-robbing

but also virtually eliminates power-robbing heat soak that occurs with commonly available aluminum intake manifolds

1966-1971 Mercury Comet

Predrilled holes to mount adjustable bracing (PN 807-3) from the interior for added support to window

3/8-24 in Right Hand Female Thread

You can simply dial in 1┬ ¼Î“ê₧-15┬ ¼Î“ê₧ with the rotary dial for quick adjustments

PRW Power Stock Height Valve Covers Breather Hole Hardware Aluminum - Black Anodize - Aftermarket Heads 20-OTL-NB-ML but also virtually eliminates power-robbingProduct Description: Valve Cover Stock Height Breather Hole Hardware Included Aluminum Black Anodized Aftermarket Heads Mopar B RB Series Pair PRW Industries produces engine components for racing applications such as rocker arms, valve covers and main caps to name a few. These products offer performance gains at a value price.