Yes, it will work. The heatsink retention bracket's heatsink latch points are the same between sockets 754, 940, 939, AM2/AM2+, and AM3 and any heatsink that uses the latch points will fit on any of them.
The only heatsinks that are
not interchangeable are those that call for the removal of the stock heatsink retention bracket and backplate. The screws that attack the bracket to the backplate have a different hole pattern between 939 and AM2/AM2+/AM3. Heatsinks that bolt through the motherboard are not interchangeable between 939 and AM2/AM2+/AM3 unless they specifically have the different hole patterns for both 939 and AM2/AM2+/AM3. Fortunately, AMD's stock bracket is strong and very few heatsinks bolt through AMD motherboards any more, even gargantuan units like Scythe's 1155-gram
Orochi SCORC-1000 use the stock bracket.