W638 v220 speaker replacement?

[V220Nige]

Hi, can anyone recommend an upgrade in speakers for my w638 dashboard? One has completely failed so I have taken it out and it's 4" (10cm) wide, I'm not sure if it's 3 way or 2 way or the wattage. Can anyone advise me on what I need to look for as a replacement and as a good fit, thanks