[MSCW list] 2021 Miata - Vacuum Hose Part Identification

Timothy Metzinger tim.metzinger at outlook.com
Fri Oct 27 20:04:23 CEST 2023

I think you mean "abraded", meaning worn away by friction.  Some hoses have a braided covering to keep them from flexing too much.   My guess is that it may be there to provide extra protection against rubbing or heat damage.   A picture would help.   Don't hesitate to ask on the Miata.net forums (in the ND section) if you don't find an answer here.


-----Original Message-----
From: MSCW <mscw-bounces at lists.mscw1.com> On Behalf Of Stephen di Girolamo via MSCW
Sent: Thursday, October 26, 2023 8:13 PM
To: mscw at lists.mscw1.com
Cc: Stephen di Girolamo <digirolamosteve1 at gmail.com>
Subject: [MSCW list] 2021 Miata - Vacuum Hose Part Identification

Mazda Sports Cars of Washington (MSCW), Social Group List Serve

Does anyone know the purpose of the short (about 1 inch long) rubber piece that covers the abraided portion of the passenger side vacuum hose that comes from the steel pipe at the firewall? At first I thought it was just a factory fix to an abraided portion of the hose perhaps damaged during production. But I have seen the same piece in photos of other Miata engines. The piece on my car is neatly split along the botton side with two ridges circling each end. It appears to just slip over the fixed vacuum hose and can easily be slid from side to side exposing the abraided area of the hose. I thought perhaps it was meant to act as  an easy to use way of defeating the vacuum pressure when adjusting something. But I would have expected a neat hole of some sort in the hose, not just an abraided area. Anyone know what this is and what it is for. Mine keeps falling off when I wipe down my hoses. So I put a loose clip on it for now?

Thanks, Steve
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