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Silcone ast hoses

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Old 09-09-18, 01:37 AM
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Silcone ast hoses

Is there such a thing as silicone hose replacements for the filler neck to ast hose and radiator to ast hose? What site or company would have these? If i cant find silicone where can u get oem replacements then?!?!
Old 09-09-18, 02:09 AM
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I haven't seen aftermarket AST coolant hoses for the FD, but one could use the right diameter reinforced silicone straight hose hose and route it so that it doesn't kink or put a spiral stainless steel wire insert in it and bend it to shape.

The stock AST hose is available from Mazda

N3A1-15-183 (T-stat housing to AST)
N3A1-15-184A (AST to overflow)
N3A1-15-380C (AST to radiator)

I just found HPS has the heater hoses molded in silicone for the FD though. Thanks for the question prompting me to search.
Old 09-13-18, 11:35 PM
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I have ordered all new hoses thank you. I did find out the ast to overflow and ast to radiator part numbers you provided are correct but are switched. Just in case someone sees this thread and doesnt want to get all 3...
Old 09-14-18, 12:33 PM
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Thank you for catching that mistake!

Makes sense the two reinforced high pressure hoses have closer part #s compared to the unreinforced overflow hose.

N3A1-15-183 (T-stat housing to AST)
N3A1-15-184A (AST to radiator)
N3A1-15-380C (AST to overflow)
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