SOHC.co.uk Forums > CB350/400

Copper sealing washer 90441-333-000 cb350f

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ttr400:
You can re-use the old ones, but i normally replace them.

The oem washers are not copper but copper plated steel. i have also re copper plated old washers before.

Kevin

Bryanj:
Two different part number according to CMSNL 90441-422-000(was377) Washer 8mm 10 reqd, 90442-377-000 Washer seal 2 reqd and they go under the two nuts with threads in the top

Nurse Julie:
I could be wrong but the 350 and 400 have a different number of the copper washers fitted, 12 copper for the 350, 10 copper and 2 Dowty type on the 400. It may depend on which fiché / parts book you are looking at possibly.

Bryanj:
My bad I was looking at the 400 first, but the 350 just says washer and is the same part number as the plain one, perhaps the copperised was a mod for the 400

SeanFD:
I’m picking this up to ask about washer size.

The sealing washers I took out measured M8 x 18 x 2mm.

I ordered some new ones from Advanced Fluid Solutions (AKA Silicone Hose World) - £2.12 for 2 as against £7.44 each from DS.
https://www.ebay.co.uk/itm/GERMAN-METRIC-Bonded-Dowty-Seal-Self-Centering-Sealing-Washer-Hydraulic-Fuel-AFS/271194638445?ssPageName=STRK%3AMEBIDX%3AIT&var=570153990855&_trksid=p2057872.m2749.l2649

They arrived and measure M8 x 14 x 1mm.

Can I use these? There doesn’t seem to be any other options size wise.

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