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AC Flex Duct Size


MC-71

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Can anyone that has there Monte apart confirm the sizes of the AC Flex Hoses in the dash. I think the Right side is 3 1/4” . ID and the two smaller ones are 1 3/4” ID. Can you measure them for me and measure the length of the three. I included pictures from the Assembly Manual. I also found a suppler for these hoses but I need the correct size. I’ll post that info soon. The small hoses connect to the lap vents.

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If all goes well I can let you know next week when I start assembly on mine. I ordered what I hope is the correct size but we will wait and see. 

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This hose fits between the plenum box and the passenger dash vent next to the glove box. I didnt have to replace the lap vent hoses. I guess the answer is yes to your question Carl. I did my car and another members car with the same hose, you just have to trim it to length. 

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Thanks James. That link you posted is for a 3” flex. There is no way that will fit our Montes. 3 1/4” ID fits and that takes some effort to get it on. The vendor sent me 3” and then they sent me 3 1/4” and that took a week to get it. I almost bought a 3 1/2 from Mc master & Carr. What a pain.

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Well that is the link from my records and my invoice and currently installed in my car. Dont know what else to tell you. 

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