I got bored. Really had more important things to do, but didn't feel like doing them.

P/N Description Used By Reference
156866 Belt, Toothed (55T) LRB 573-121-800
161520 Belt, Toothed (64T) LMRB 573-121-800
162222 Belt, Timing LMRB 573-121-800
161806 Belt, Timing (48T) LRB (ASR) 573-121-800
176075 Belt, Toothed (40T) LRB 573-121-800
171179 Belt, Flat LTHS 573-125-801
163744 Belt, 85T LMXB Ind Spd 573-130-802
161520 Belt, 64T LMXB Com Spd 573-130-802
146647 Belt, 50T 195442 Mod Kit 573-130-802
195448 Belt, 55T 195443 Mod Kit 573-130-802
195992 Belt, 83T LK wall mount 573-116-800
181409 Belt, 47T UP (33 printer) 574-172-800

Thought it interesting how the descriptions got terser over time.  Like just telling how many teeth tells you it's toothed or timing.
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The above comments or recommendations are SWAG. Use at your own risk.

John, W9DDD