DAY5120640
Serpentine Belt (D13/MP8 FAN)
| Part # | DAY5120640 |
| UPC/GTIN# | 601961390188 |
| Availability | In Stock (9) |
| Feature | Specification |
|---|---|
| Type | Poly Rib® Gold Label heavy-duty serpentine belt (fan drive) |
| Product Application | Volvo D13 and Mack MP8 fan drive on Class 8 trucks |
| Effective Length | 63.98 inches (1625.10 mm) |
| Outside Circumference | 64.54 inches (1638.92 mm) |
| Top Width | 1.66 inches (≈42.2 mm) |
| Number of Ribs | 12 ribs (12PK profile) |
| Industry Number | 12PK1625 |
| Material | EPDM rubber with aramid‑reinforced cords |
| Standards | Meets/exceeds SAE J1459 and SAE J2432 |
Includes (sold as a single belt):
- 1× heavy‑duty 12‑rib fan/accessory serpentine belt for Volvo D13 and Mack MP8 engines.
- Designed for high‑load fan drive with multiple tight idlers, converting crankshaft power into cooling airflow and alternator output.
- Gold Label EPDM construction runs cooler, resists cracking, and minimizes slip and noise in long‑haul service.
Dayco 5120640 is a 12‑rib heavy‑duty fan serpentine belt built for Volvo D13 and Mack MP8 engines, where the front‑end drive must power large cooling fans plus related accessories under continuous high load.
Fits Heavy-duty trucks (D13 / MP8 fan)
-
Volvo VNL (2007–2017) fan drive with D13 engines.
-
Mack CXU / CHU and related models using MP8 fan drive with 12PK1625 belt.
-
Any Volvo/Mack application calling for fan belt Volvo 23961868 / 20582557 / 20582565 or 12PK1625.
Cross Reference / Part Interchange
| Manufacturer / Brand | Part Number(s) | Notes |
| Dayco | 5120640, 5120640DY | |
| Volvo | 20582557, 20582565, 23961868, 23961839 | |
| Mack | 88GB460P640 (and other 12PK1625 fan belt SKUs) | |
| Gates | K120640HD, K120640HDU | |
| NAPA | 25‑120640HD, 25120640HD | |
| Continental | 4120640 |
Related Products
Copyright © 2025 Fleetone Parts - All Rights Reserved.
Resources
Terms
Terms
Fleetone Parts
230 BRISTOL PIKE BRISTOL PA 19007
- +12157855175
- sales@fleetoneparts.com
Copyright © 2026. Fleetone.
MY CART
Oops!! You Have No Item in Your Cart!!!
