DAY5100640
Serpintine Belt
| Part # | DAY5100640 |
| UPC/GTIN# | 601961390164 |
| Availability | In Stock (4) |
| Feature | Specification |
|---|---|
| Type | Poly Rib® Gold Label heavy-duty serpentine belt |
| Product Application | Heavy-duty diesel engine accessory drives (10‑rib, 64 in class) |
| Effective Length | 64.00 inches (1625.60 mm) |
| Outside Circumference | 64.63 inches (1640.40 mm) |
| Top Width | 1.38 inches (35.1 mm) |
| Number of Ribs | 10 ribs (K‑section) |
| Industry Number | 10PK1625 / 10625 |
| Material | EPDM rubber with aramid‑reinforced cords |
| Max Operating Temperature | 212°F (100°C) |
| Typical Use | Fan / accessory drive belt on Freightliner Cascadia and similar HD trucks |
Includes (sold as a single belt):
- 1× 10‑rib heavy‑duty serpentine belt for diesel accessory or fan drive applications.
- Engineered for high torque diesel drives with EPDM compound and treated cords to control stretch and maintain tension.
- Compatible with automatic belt tensioners designed for K‑section 10‑rib belts.
Dayco 5100640 is a 10‑rib Poly Rib heavy‑duty serpentine belt built for high‑load diesel accessory and fan drives, using a 64" effective length to match common Class 8 pulley layouts.
Typical “fan / main accessory” position on:
- Freightliner Cascadia and similar Class 8 trucks using a 10‑rib ~64" belt (fan or accessory drive).
- Other heavy‑duty diesel applications calling for industry number 10PK1625 / 10625 with 10‑rib, 64" effective length.
Cross Reference / Part Interchange
| Brand | Part Number | Notes |
| FREIGHTLINER | 01-31893-635, 01-32731-635, 131893635, 132731635 | |
| AC DELCO | 10K640, K100640HD | |
| Navistar | 2012260-C1, 2038371-C1 | |
| VOLVO | 20811866 | |
| NAPA | 25-100640, 25-100640HD, 25-100643HD | |
| GOODYEAR | 4100640, 4100642 | |
| Continental Belton | 4100642 | |
| FRESH START | 640K10 | |
| MACK | 88GB447P640, 88GB456P640 | |
| DYNACRAFT | D1102-6359 | |
| GATES | K100640, K100640HD, K100643HD | |
| CARQUEST | K100640, K100640HD | |
| STERLING | 0132731635, 132731635 | |
| BANDO | 10PK1625, 10PK1630 | |
| INTERNATIONAL/NAVISTAR | 2012260-C1, 2038371-C1 | |
| Continental Elite | 4100640, 4100640X, 4100642F | |
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