Rescuing my Volvo after 3 years parked

[jbg]

Thank you ngoma,

That link was very helpful. The part number it lists for the sealing ring is 1257197. That seems to be an OEM number for it. I've also found 035 121 043, 035-121-043, 035-121-043-INT, 035.121.043, 035121043, 22554044589, 35121043, and N90133901 from IPD, Pelican Parts, and FCP. I was trying to find an OE number as a cross reference for the other numbers.

Our own v8volvo mentions in a thread from ~2019 that the "[w]ater pump o-ring part number is 035121043. Available online for under $2 or the dimensions are 98mm x 4mm if you want to find one off the shelf."

I used that number, 035121043, and I typed it into Rock Auto's part number search and I found an Elring o-ring P/N 091723. The description for this part listed the following cross reference numbers: 035121043, 1257197, 12571972, N90133901. All three of these match numbers I found elsewhere, and your OE number. The best part is that the Elring o-ring is $0.99!

There is also a BECK/ARNLEY 0394021 which has the same cross reference numbers for $2.99/ea.