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This part up until now has simply not been available since the 1930s and has proved rather elusive to source for many years but at last it is now back. A customer has now discovered an overseas source and kindly brought these to our attention for us to import and stock for the MMM community. These rubber grommets are perfect for our MMM cars, coming in the correct sizes, having the correct 1930's profile and also incorporating the external recess of 3/8 the inch between the lips for the thickness of the firewall. These gromets are not available elsewhere.
We can supply in both required MMM sizes, these being the larger grommet at 1 1/4 inch outer diameter (hole in firewall) with 1 inch inner diameter (used on rev counter drive holes) and the smaller size of 31/32nd inch outer diameter with 11/16th inch inner diameter (used for the wiring harness and oil / temp capiliary as well as fuel piping).
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For those who have cars which are fully wired up and have no grommets in place, then these can be cut with a sharp knife and inserted with the join being unnoticeable.
Price £2.75 each (please specify size required when ordering)