Hayes and O'Connell will start the game while O'Callaghan is named on the bench as coach Alan Gaffney gives Trevor Hogan the opportunity to secure a place on the Ireland trip to Japan later in the year.
Also named in the Munster 22 is Denis Leamy who makes a welcome return from injury
Munster: 15. Shaun Payne 14. Paul Devlin 13.Mike Mullins 12. Rob Henderson 11. Anthony Horgan 10. Jason Holland 9. Peter Stringer 1. Gordon McIlwham 2. Frank Sheahan 3. John Hayes 4. Trevor Hogan 5. Paul O'Connell 6. Alan Quinlan 7. David Wallace 8. Anthony Foley capt Replacements: Eugene McGovern, Jerry Flannery, Donncha O'Callaghan, Denis Leamy, Mike Prendergast, Paul Burke, John Kelly.