Haslam will be flanked in the Swedish team by American Jake Zemke, who will step in for the injured John Hopkins for the Monza round.
On their home track Italian riders and manufacturers will also be searching for their slice of glory and expectation is especially high to see how well the Aprilia RSV4 will go on such a fast circuit.
In the races so far the four-cylinder machine from Noale has demonstrated top speed on a par with its rivals and it could come to the fore on a track where slipstreaming plays such a vital role.
On the rider front both Max Biaggi (Aprilia) and Michel Fabrizio (Ducati) will be trying to score a first win for an Italian at Monza since Pierfrancesco Chili in 2000.
Biaggi is still dealing with the Aprilia RSV4's teething problems, but the potential is there, while Fabrizio is looking to emulate Haga's speed and consistency as he seeks to join the ranks of race winners.
The opening rounds showed that BMW Motorrad are finding it difficult to make their S 1000 RR machine competitive on technical circuits, but Monza will be an ideal opportunity to get the new bike closer to the front-runners.
Troy Corser, a previous winner in 2005, and Ruben Xaus know the track like the back of their hands and their experience will be vital in the team's attempts to obtain some good results, especially in view of the second half of the season.
BSB champion Shane Byrne meanwhile will hope that victory in the Italian Championship round at Monza will give him the boost he needs to kick-start his season for Sterilgarda Ducati, while countryman Tom Sykes will be trying to emerge from team-mate Spies' shadow at Yamaha Italia's home event.
Monza has been part of Superbike since 1990 and this year marks its 18th edition. With a lap of 5.793 km Monza is the longest circuit on the calendar and its long straights, wide curves and fast chicanes all help to exalt the power of the bikes, which remain at full throttle for over 50% of the lap.
Monza has been the scene for many epic slip-streaming battles in the past, and the winners include all the top names in Superbike racing.