Assuming you're talking about this one:
98K Replacement Barrels
#BAR03 Size 1
Price: $99.95
Norwegian 98K replacement barrels.New old stock
you'll need a large ring M98 action. Be advised that not all Mausers are created equal; the Yugo M48 series Mausers are a mid-length action, and most parts for it are not interchangeable with a standard M98. Even 'standard' M98 actions are not all created equal; late-WWII German actions are inferior in quality and workmanship to pre-war or early-war actions; The pre-war Czech (Brno) actions from VZ-24 and M98/22 Mausers are excellent quality, as are many of the South American actions - many of which were made by DWM in Germany.
Books have been written on this subject, so I won't try to condense them into one post. If you're not certain what to look for, do some research before buying.