Copper sealing washer 90441-333-000 cb350f

[watty51]

Hi All,
Can the 12 x copper sealing washers 90441-333-000 that fit under the cylinder head nuts be reused. Number 16 on picture.

Ds are asking 3.30 each so that’s £40 for 12 washers, unless that’s the “going” rate seems a bit pricey.

Has anyone else managed to get hold of these from another supplier, or are they a special type.

Cheers
Mark

[Johnwebley]

I don't know. But you could try annealing them.

Heat to cherry red then quench

Sent from my SM-A750FN using Tapatalk

[mike the bike]

+1 on annealing them.

[mike the bike]

Or you can buy 10 for £2.35

[Nurse Julie]

+2 with using the old ones.

[Nurse Julie]

Or you can buy 10 for £2.35

Or, you can also use Dowty type washers.

[watty51]

Thanks all for the quick response.

Will have a look at the options stated and make a decision.

[Moorey]

Or you can buy 10 for £2.35

Or, you can also use Dowty type washers.

What size are the Dowty seals Julie someone has just given me quite a few they measure about 11.2mm ID

[Bryanj]

I thought only 2 of the washers were sealing ones the rest ordinary ones

[gtmdriver]

+1 for Dowty Washers

[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.