Thanks for your question.
I'm not able to find the Sunkist # 8-R D 97 (this may your serial number). That said, Sunkist makes the J-series commercial juicer, which I've included below for reference. If this is the juicer you're referring to then yes, the Sunkist 4A Strainer will fit your juicer.
Here is a parts breakdown to our J-series Sunkist juicers that you may find handy: http://www.etundra.com/Sunkist_Juicer_Parts-P8838.html?token=46243|||0|24|7|1|0
Answered on 2/11/2013 by Andrew Call from Boulder, CO