If you’re looking for a replacement for belt number 11A0770, this guide covers everything you need — from technical specs to compatible part numbers across top brands.
The 11A0770 is a classical V-belt used in both automotive and light industrial applications. It's part of the 11A-series, known for durability and reliable power transmission across fans, alternators, pumps, and light machinery.
📏 Belt Specifications
- Top Width: 11 mm (approx. 0.44 inches)
- Effective Length: 770 mm (approx. 30.31 inches)
- Profile: Classical A-section (11A)
- Angle: 36°
- Construction: Wrapped belt with polyester or aramid cord (varies by brand)
This belt is commonly found in older European and Japanese vehicles, as well as compact industrial and agricultural equipment.
🔁 Cross Reference Numbers
You don’t have to stick with just one brand — here are compatible replacements from trusted manufacturers:
| Brand | Part Number | Notes |
| Gates | 11A0770 | Direct match |
| Dayco | 15275 | Equivalent V-belt with same specs |
| PIX | 11A0770 | Standard A-section replacement |
| Optibelt | 11A0770 | High-grade German-made belt |
| ContiTech | AVX10x770 | Slight profile variant, compatible |
These belts are interchangeable in most applications where 11A0770 is specified. Always verify by size and application type.
⚙️ Typical Applications
The 11A0770 is used in:
- Older automotive systems (fan, alternator, and water pump drives)
- Compact compressors and conveyor systems
- Agricultural machinery such as small tillers and mowers
Its shorter length and narrow width make it suitable for tight pulley configurations where larger belts won’t fit.
✅ Buying & Replacement Tips
- Choose Kevlar or aramid corded versions for high-tension systems
- Double-check belt width (11 mm) and length (770 mm) before ordering
- If possible, replace with a wrapped belt for smoother pulley engagement
Final Thoughts
The 11A0770 V-belt has several trusted cross reference options and is still widely available through aftermarket suppliers. Whether you’re maintaining older equipment or replacing a belt that finally wore out, you’ll have no trouble finding a match.
Need help finding one? Visit PowerDriveBelts.com or use our V-Belt Finder Tool to search for a match fast.