To better compensate for performance fluctuations due to production tolerances, the intake opening (A) has been increased from 60 mm (2.362") dia. to 70 mm (2.756") dia (B).
If an air cleaner housing with a 70 mm (2.756") intake opening is service installed, the pipe on the front wall must also be opened to 70 mm (2.756") dia. (B).
Applicable to version with expansion element in cold air stream; warm air supply pipe dia. (C) has been increased from 50 mm (1.9685") to 60 mm (2.3622").