Grommet Brake Servo Check Valve Bus '74-'79

Rubber grommet for power brake servo (booster) hard plastic hose. This grommet goes around both ends of the brake servo check valve, also in the hard plastic hoses where they attach to the metal pipe in the chassis or the brake servo itself. The check valve is located in the engine bay or on early models, just in front of the firewall. Depending on the year of your bus there are up to 5 of these used.