Review on 🚗 BMW Genuine Fuel Tank Breather Valve:13999990 - Optimal Performance and Quality Assurance by Smiley Edwards

Replaced this valve on a 2003 530i. The original valve was stuck open (fuel vapor flowed through the valve when the car was not running). After refueling, the car does not start well. I was able to clean and open/close the original with the PSU but put in this new one. Easy to swap out, no more check engine light and no more hard starts after refueling. Also replace the fuel tank cap gasket. I found a blue seal for a Mercedes baseball cap on Amazon. Fits perfectly.