Despite claiming the fastest lap, Crutchlow continues to search for that first win after completing his fourth third place finish of the season.
Further back, there were plaudits for Sylvain Guintoli in fourth place, the Frenchman maintaining his good run of recent form to record his equal-best result of fourth, while Xaus clung onto fifth position for his highest ever finish with BMW.
In a race of attrition that would see all 15 finishers get into the points, Noriyuki Haga fended off the late attentions of James Toseland for sixth and seventh, ahead of the ailing Haslam, while Checa and Lorenzo Lanzi had fairly underwhelming runs to ninth and tenth.
They could have finished lower had Luca Scassa not crashed out of seventh five laps in, while Michel Fabrizio was also running well inside the top ten when he cruised into the pit lane to retire.
There was also disappointment for Jakub Smrz, Chris Vermeulen and Max Neukirchner after they were all wiped out in a first turn crash.
As such, Tom Sykes crossed the line 11th for Kawasaki, ahead of the injured Shane Byrne, who was at least able to get the glory over Broc Parkes following a race-long battle. Pedercini Kawasaki's Roger Lee Hayden and Matteo Baiocco completed the points.