Item Detail Table of Content Diesel Stack Adapter Item Number: CPT17ADSR600 Supplied by CRUSHPROOF TUBING CO (see all) ITEM IS DISCONTINUED1-855-298-2687 Description Crushproof Vertical Diesel Stack Adapter. For Stacks up 5½" using 4" or 5" Hose. Warranty Product is warranted to be free of defects in workmanship and materials of time of receipt.