BlackStar H08B20 - British Standard Sprocket - #08 Pitch 20 Tooth P14M The 5L900K is the heavy-duty

The 5L900K is the heavy-duty version of the same belt length

so a 20/SPA2000 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

Specifications Part Number H35A112 Chain Pitch 35 Number of Teeth 112 Bore Type Plain Bore Hub Style A-Plate Strand Count Single Material Steel Hardened Teeth Yes Outside Diameter 13

"name":"D&D Global 1185K13 Micro-V Serpentine Belt — K Section

6/B166 is a standardized industry size

BlackStar H08B20 - British Standard Sprocket - #08 Pitch 20 Tooth P14M The 5L900K is the heavy-dutyThe BlackStar H08B20 is a British Standard #08 pitch B Hub roller chain sprocket with 20 teeth, manufactured from steel. British Standard sprockets meet ISO 606 specifications for chain drives in metric and imperial European applications. Plain bore design finish to required shaft size during installation. Specifications Part Number H08B20 Product Type British Standard Sprocket Standard ISO 606 British Standard #08 Chain Pitch #08 Hub Style B Hub