Review on 🔧 GM Genuine Parts Crankcase Vent Valve Hose - 12555694 SEO-Optimized Product Name by Dmitriy Kingsley

update! Bought 12/2017, today 08/2018 found that the rubber knee is cracked and sucks air. 8 months and 8000 miles is all I got from the Delco air conditioner. Hmmm? Has 17 years and 387,000 miles on the original factory knee. I had to take my wife's little sports car to the local parts store and buy a Dorman universal knee so I could drive to work tomorrow. Very disappointed. The rest still works and looks like new. Now back to service with an additional $10 universal rubber arm! YikesOriginal Review This is the number one thing to frame an aging Vortec. 1999 Suburban with over 387,000 miles. If you have performance issues, replace it at your local parts store for less than the cost of a rubber boot. It makes my truck smooth and sleek and also increases mileage. Also, I would recommend taking both at the same time to get the most benefit. Dorman HELP! 42320 PCV Valve Sleeve