356b engine bay wire harness sleeve

[Brett Mitchamore]

Does anybody have a good source to replicate the outer sleeve for the rear part of the wiring harness that passes over the transmission?

[Jim Clement]

yes, a bicycle inner tube - just sand off the markings

[Hugo Karasawa]

Check this post,
I used the Mcmaster rubber sleeve.
viewtopic.php?t=43452&hilit=mcmaster

[Brett Mitchamore]

Thanks Hugo! That's spot on.

I can also appreciate the ingenuity of using an inner tube, pretty clever.

[Bob Cannon]

Bicycle inner tubes are fine for bikes, but the rubber is not formulated to withstand either heat or ozone and will crack and deteriorate prematurely, especially where it is attached to the body as the harness comes out.

What you need is the tubing that Hugo has suggested and obtained from MacMaster-Carr. This material is EPDM rubber and resists ozone, is soft and flexible and should last a lifetime. It is the only material I now use on wiring harnesses. You can get it in small lengths (you will need just shy of a meter- probably best to order a 4 foot length), it's usually in stock and delivery is fast.

Here is the direct link: https://www.mcmaster.com/9776T22/

Wiring harness covering

While you are on their site, spend some time to explore some of their other offerings including metric fasteners. They have a fantastic selection. No affiliation, just a very satisfied customer of this go-to company.

[Mike Wilson]

+1 on McMaster Carr. They have a lot of materials and parts (hardware) we use on our 356's and ship quickly.

Mike