CB500K or CB500T: start with the model code
Choose between the CB500K range (1971–1973) and CB500T Twin (1975–1976). These names distinguish the four-cylinder CB500 from the later two-cylinder CB500T; the T is more than a different year label. Keep that distinction in view when searching for engine or fuel-system parts.
CB500K parts, 1971–1973
CB500T Twin parts, 1975–1976
Read each product application
The K range has separate K0, K1 and K2 year pages, while the T range brings its two years together. Check the fitment details on each product, even when its title says only CB500. A shared family page or similar part photograph does not establish interchange between these two motorcycles.