Midland Haldex Air Dryer Purge brake parts P/N: 5005037K, ready to ship worldwide! Call us with any questionsA factory handling fee of $25.00 per unit is added at checkout.FeaturesPurge Valve Maintenance Kit for AD-9 Air DryerIncludes New Design Purge Valve Piston.Tech SpecsApplication: 109685X, 109685HX, 65224X, 65647X , see Notes**Additional InformationNotes**Purge Piston Retainer Shoulder Bolt not supplied. Must utilize old bolt when rebuilding purge valve assembly.