This couplng valve is designed to fit Dodge Cummins diesel engines with ISZ QSZ. This valve is compatible with other engines and components, making it a versatile part for commercial truck repairs. (not including Public holidays). Work Hours: Monday to Friday. We are not responsible for undeliverable address. This international order may take longer to arrive. This international order express post by EMS(5-8 days) or DHL(2-5 days) is available. We fully guarantee our items. All items are in brand new condition unless specified otherwise elsewhere in the description. If you are not sure about the part number, do not place the order.