quick view Add to Cart HAYDEN ENTERPRISES INC. HAYDEN ENTERPRISES INC. - KRANK VENT PLUS 3/8" MSRP: $124.95 Controls the air under the pistons by maintaining the proper amount of vacuum in the crankcase at any rpmBetter seal is achieved due to an increased pressure differential across the compression... Add to Cart Add to Wish List Add to My Wish List Create New Wish List Compare