Ospreys added two second half tries with Tommy Bowe going over after 44 minutes and replacement Richard Fussel scoring after 75 minutes. Ospreys outhalf Dan Bigger missed both conversions.
Alan Quinlan after the win and receiving his 200th cap "I'm very proud, to get an opportunity to run out in Thomond Park in front of great supporters was very special. When I started out I never thought I'd still be around now and I'm still striving for success and I'm motivated every time I pull on the jersey, and it's very special to me."
Tony McGahan added "It was really important we progress each week and we're happy where we are after three games in the Magners League. We've a bit of a way to go, and a long way to go in some aspects, but we're slowly taking steps forward each week and we hope to continue that really."
Commenting on Doug Howlett "He's a thorough professional, he looks really sharp at the moment, even after all he's achieved in his career he's still looking to progress" and Alan Quinlan "What more can you say about Alan, he's enthusiastic in everything he does, he was huge for us tonight, and I'm delighted for him and his family."
Munster: F Jones, D Howlett (Capt), J Murphy, S Tuitupou, I Dowling, P Warwick, T O'Leary, M Horan, D Fogarty, J Hayes, D O'Callaghan, D Ryan, A Quinlan, N Ronan, J Coughlan. Replacements: D Varley, W du Preez, T Buckley, B Holland, P O'Mahony, P Stringer, R O'Gara, D Barnes.
Ospreys: L Byrne, N Walker, T Bowe, A Bishop, S Williams, D Biggar, J Nutbrown; P James, M Davies, C Mitchell, A W Jones (Capt), I Evans, J Collins, M Holah, J Thomas. Replacements: R Hibbard, D Jones, A Jones, B Lewis, R Webb, G Owen, R Fussell.
Referee: Neil Paterson (SRU).