I remember a guy who cut a drain plug washer with a circle cutter out of a piece of milk carton. I buy generic copper washers in the correct size.
Best place to get drain plug washers?
- Thread starter R18Civic
- Start date
I would measure the one you have currently installed and buy the same size.
Also, usually searching for the Honda part number will also return aftermarket options that fit that part number.
I would not waste money on dealer washers, it’s a total rip off.
Also, usually searching for the Honda part number will also return aftermarket options that fit that part number.
I would not waste money on dealer washers, it’s a total rip off.
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That's a great solution. I made more than one carburetor gasket with a cereal box, scissors and a small ball peen hammer.
f355spider
$50 Site Donor 2024
Kinda depends on the car dealer though. My local Toyota dealer gets $1.63 for a drain bolt washer....I was in Oregon last fall and stopped at a dealer that sold the factory filter for only $5 (my local wanted $8) and they give the washers away free with each filter purchased. I bought six.
NAPA
Washers used to come with oil filters. Now I feel lucky if the filter comes with the O-ring.
I'm annealing a work-hardened copper washer right now. Oops, wrong thread.
So I'm not happy with my refurbished washer. My limit for washer thickness is 1.5mm. 
New washer dimensions
OD 19.87mm
ID 16.02mm
thickness 1.9mm
used washer dimensions
OD 20.87mm
ID 16.94mm
thickness 1.17mm
To be fair the new washers start out with up to 0.2mm difference in thickness between units. Loose manufacturing tolerances!
New washer dimensions
OD 19.87mm
ID 16.02mm
thickness 1.9mm
used washer dimensions
OD 20.87mm
ID 16.94mm
thickness 1.17mm
To be fair the new washers start out with up to 0.2mm difference in thickness between units. Loose manufacturing tolerances!
Last edited:
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Why are the washers crashing?!
There are basically two kinds - regular flat ones and crush washers like you see on spark plugs. Did I misspell it in my prior post? Yes I did.
I don't want to nitpick but even normal washers get crushed when torqued properly. Compare my before and after measurements in my above post. I think a washer made from 18k or even better 24k gold would seal really well.
Crusher warshers for the win! I hear you can turn them around and resuse them, but that's above my skill level.
Last Toyota filters I bought had warshers taped to the box. Kinda nice...
Last Toyota filters I bought had warshers taped to the box. Kinda nice...
Non-crush copper washers last a VERY long time so long as you're pretty consistent with torque on the plug. I've ran original ones to about a quarter million miles before changing them for example.
We bought a Odyssey in 2004 in Western Washington. My son was going to Gonzaga and I stopped at the Honda dealer there for oil, filter and washer. Instead of the aluminum washer Honda recommended, they sold me a copper one that looked like an O ring. I liked it so much I only use them since then and just buy them over the phone with a credit card. Since the last time I bought 100 of them, I don't know if they still sell them. They work great and I do not reuse them.
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