Section, length, and groove count — less drama than sending the apprentice with a string measurement.
What you will gain from this guide
- Old belt profile shows correct section
- Fleet routes need spare fan belt on shelf
- Poly-V belts need rib count match
Fenner belts fail on the highway when the workshop skipped rib count and ordered “something close.” Close does not exist at 90 km/h loaded.
Order discipline
- Read code off old belt or pulley label.
- Confirm poly-V rib count — visual match to pulley.
- Stock one spare per high-mileage route bus.
Deep guides: V-belt guide, poly-V tension, browse belts.
