This genuine Detroit Diesel pneumatic control valve is a used part that Does Not promise full functionality but shows minimal wear and may function. This is a core, being sold as a core, that may not be a core and provide perfect functionality, but promises nothing. There is no warranty on core sales or disclaimed components. The part number for this pneumatic control valve is: 23536834. Please refer to the part number for fitment and review all photos provided before making your purchase. Thank you for choosing EKG!