Transmission & Coolant Plug Washers

[Cbau]

Does anyone have a diagram or correct sizing & part number for the washers we need to replace when doing a trans & coolant drain and refill? I went to the dealership and they gave me a 10mm washer (part # 90471-PW7-A00) for the trans plug. I rushed out of there without double checking if it was the right part. When I search that up, it shows it’s for a sensor.

I was also given the part number 90401pr4000 for the washer that goes on the engine block for coolant. Is that correct? Any help is appreciated. Thank you!

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[cryptolime]

Does anyone have a diagram or correct sizing & part number for the washers we need to replace when doing a trans & coolant drain and refill? I went to the dealership and they gave me a 10mm washer (part # 90471-PW7-A00) for the trans plug. I rushed out of there without double checking if it was the right part. When I search that up, it shows it’s for a sensor.

I was also given the part number 90401pr4000 for the washer that goes on the engine block for coolant. Is that correct? Any help is appreciated. Thank you!

they always give me the wrong size at the dealership. i think it's 20 mm but they kept giving me 18 mm gaskets. I think the Si uses a different size or something.

anyways, i ended up just buying this on amazon and I'll never have to buy them again.

https://a.co/d/4iOb8ZO

The drain plug gasket part number is 94109-20000.

90401-pr4-4000 is the correct part number for the engine block coolant gasket.

https://www.civicx.com/forum/threads/where-is-the-engine-coolant-drain-bolt.49501/

#18 in the pic. 28 mm.

 

[AZCWTypeR]

I think you'll find very little coolant left in the block after emptying the radiator and heater core. I've drained the block on a couple Honda's and decided it's not worth the effort. If the coolant was contaminated, yes, but otherwise no.

 

[Cbau]

I think you'll find very little coolant left in the block after emptying the radiator and heater core. I've drained the block on a couple Honda's and decided it's not worth the effort. If the coolant was contaminated, yes, but otherwise no.

Im changing out my downpipe so I figured it’d be the best time to drain the block while it’s out. May not ever do it again after the downpipe is installed tho

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