Overview Ideal for dual Carb applications. Center port connects to engine pulse port (line should not be more than 15 long). Arrows on pump indicate flow pattern for easy installation. Hose barbs accept any 1/4 i.d. fuel line. Cast Aluminum construction. Genuine Mikuni pump. Not an inferior foreign substitute. Body measures 2.5 round x 2 high.Weight 3 oz. Does NOT INCLUDE Weep Hole required by Rotax Service Instruction.