Arsenal now lead Tottenham 5-3 in the north London derby at White Hart Lane.
Arsenal had taken a 4-2 lead through Freddie Ljungberg on 69 minutes but Ledley King gave Tottenham renewed hope with a headed goal on 74 minutes.
But substitute Robert Pires stretched Arsenal's lead on 81 minutes with a delightful finish.
Latest score: Spurs 3 Arsenal 5.