Standard Motor Products DCV1 Check Review

Based on our own experience, this check valve is definitely an impressive and reliable add-on to our vehicle's exhaust system. The installation process was easy and seamless. We noticed a significant improvement in the reduction of undesirable emissions and the smooth operation of our vehicle. The only con we experienced was that the product is a bit pricey compared to other alternatives available in the market .Nonetheless the quality it provides justifies the cost..

This solved my problem. My old check valve no longer held a vacuum. I diagnosed my problem by blowing air through the black and white sides. None of the routes will be closed. This causes my air conditioning to switch from the dash to blowing through the defroster vents when driving uphill. Also, if you're sitting at a long red light, the air on the dashboard will start blowing warm air. Here are the full dimensions measured with a digital caliper: This vacuum check valve has 5mm O.D. tubes…