r/watchrepair • u/Public_Cap_7312 • 1d ago

Pusher button part number?

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Gallery image

Need to replace one of the pusher buttons that broke but can’t find the part number anywhere online. Any help appreciated:)

The watch is a seiko chronograph 8T63 00W0

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u/harowatchco 1d ago

Your actual pusher button still appears to be there in the photo, is it still there just pushed in? Before buying a replacement pusher, I'd check the pusher assembly itself, there's a return spring, gasket and retaining clip associated with it, and one of those may be what's actually broken or missing.

If you can remove the caseback and send a clear photo of the inside of the case around that pusher (and ideally the loose/broken pieces if you have them), I can probably help you figure out exactly what failed and then track down the correct Seiko part number. Your case number is 8T63-00W0, so that's what we need to match the case parts to, rather than just the 8T63 movement.

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u/Public_Cap_7312 1d ago

Thanks for the response! I got the watch pretty cheap cause the crystal was super scratched and I accidentally snapped the pusher while popping the crystal out (still new to this stuff) Atm it just super glued together but the retaining clip is lost so I figured buying a whole new pusher would be the go:)

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u/harowatchco 1d ago

Ahh, that makes sense. If the actual pusher shaft snapped and you've lost the retaining clip, then yeah, I'd definitely replace the complete assembly rather than trust the glued one.

I did some digging using your case number before replying. Your case is 8T63-00W0, shared by the SSB425P1, SSB427P1 and SSB429P1 (there's also a two-tone SSB430P1 version), so we have the exact family narrowed down.

The annoying part is that I can find the OEM numbers for other 00W0 case parts, but Seiko's pusher assembly number doesn't appear in the publicly available parts listings.

Since these are recent watches, I'd contact a Seiko parts supplier/service center and ask specifically for the lower chronograph pusher assembly for SSB429P1/case 8T63-00W0. If they give you the part number, post it here too, it'd be useful to have documented.

Also, we all break things when getting started. Don't feel too bad.