The VQ35HR is the ultimate evolution of the VQ35 series. The HR was built to be driven at the limit, but over a decade of daily driving and banging the limiter takes its toll. As the VQ35HR ages, it produces more and more blow - by, which makes its way back through the intake system and into the cylinders. More blow - by equals a higher chance of detonation, and the high - revving, high compression HR can't afford more risk. That's why Mishimoto has developed a baffled oil catch can for your VQ35HR - powered 2007 - 2009 Nissan 350Z or Infiniti.Our complete kit utilizes two 6061 - aluminum catch cans that mount in line with the VQ35HR's PCV and CCV systems for protection from idle to wide - open throttle. Blow - by is routed away from the intake and into our catch cans using direct - fit, chemical - resistant lines and CNC - machined aluminum fittings. Our cans are suspended in the engine bay by sturdy 3mm - thick steel brackets that can withstand everything from dirt drops to potholes without flinching.Inside the catch cans, air diverters and a baffle help condense oil, fuel, and water, while a 50 - micron bronze filter further cleans crankcase gases before returning them to your intake. Like all our 350Z products, this baffled oil catch can kit for the 2007 - 2009 350Z VQ35HR is backed by our Mishimoto Lifetime Warranty for a lifetime of protection. So, whether you're hitting the track or the street, protect your VQ35HR with this Mishimoto baffled oil catch can kit.