ok the end that connects to the turbo intake end is 80mm in overall diameter round. the face that connects to the airbox is 120mm wide and high 85mm.overall length is 170mm. Hope this helps
asked a Q for the other add you got too... the reason i ask is cause the stock turbo on the 3tgte has a 2.5inch rubber hose coming off but the air filter that i bought has a diameter of 4.5inch
i got it from www.flyn.com.au / click filters to the left / its the 'Type B SUS POWER' (114mm neck)
i know i know WTF but i need to figure a way to fit it on, it is such a BLOODY awsome filter if you see it, but i didnt realise the neck size before purchase