B31/5L340 V-Belt — Gates 9003-2031, Timken BP31

Verified Cross-References

Exact classical: B31, Gates B31, Gates 9003-2031, Timken B31, Timken BP31.

Dimensional FHP equivalent: 5L340, 34-inch outside length; not automatically identical construction.

Performance alternative: BX31 raw-edge cogged belt; not identical wrapped construction.

Profile: B section, 21/32-inch top width, approximately 7/16-inch height.

Fitment: No verified model-level list was found. Match exact marking, profile and manufacturer length system.

Symptoms, Checks & Installation

• Slip, squeal, reduced speed, dust or cracking
• Inspect sheaves, alignment, bearings and tension

1. Lock out power and release tension.
2. Clean and align sheaves; never pry the belt on.
3. Set specified tension and reinstall guards.