DAY5120843
Serpentine Belt (ISX15/X15)
| Part # | DAY5120843 |
| UPC/GTIN# | 601961390195 |
| Availability | In Stock (6) |
| Feature | Specification |
|---|---|
| Type | Poly Rib® Gold Label heavy-duty serpentine belt (fan / accessory drive) |
| Product Application | Cummins ISX15 / X15 and Volvo heavy-duty diesel applications (fan/accessory drive on Class 8 trucks) |
| Effective Length | 84.25 inches (2139.95 mm) |
| Outside Circumference | 84.88 inches (2155.96 mm) |
| Top Width | 1.66 inches (≈42.2 mm) |
| Number of Ribs | 12 ribs (12PK profile, K‑section) |
| Industry Number | 12PK2140 |
| Material | EPDM with aramid‑reinforced cords |
| Operating Temperature | ‑45°F to 212°F (‑42.7°C to 100°C) |
| Standards | Meets/exceeds SAE J1459 and SAE J2432 |
Includes (sold as a single belt):
- 1× heavy‑duty 12‑rib serpentine belt for ISX15/X15 and Volvo fan or accessory drive systems.
- Designed to drive engine‑mounted accessories (fan hub, alternator, A/C compressor, etc.) in a single multi‑rib belt layout.
- Gold Label EPDM/aramid construction for long life under high tension and continuous highway duty.
Dayco 5120843 is a 12‑rib Poly Rib Gold Label serpentine belt sized 84.25 inches effective length and 1.66 inches width, built for high‑load fan and accessory drives on Cummins ISX15/X15 and select Volvo heavy‑duty diesel platforms.
Typical ISX15 / X15 and Volvo Applications
- Freightliner Cascadia (2022–2024) fan/accessory drive with ISX/X15.
- International ProStar (2019–2020) and LT625 (2020) with ISX15/X15.
- Volvo VT (2006–2010), VNM (2007), and VNL (2003–2020) with heavy‑duty diesel fan or accessory drive using 12PK2140 belt.
Cross Reference / Part Interchange
| Manufacturer / Brand | Part Number(s) | Notes |
| Dayco | 5120843, 843K12 | |
| Cummins | 3100402, 3682891 | |
| Volvo | 20481362, 21189554, 20457272, 21159290, 23961883 | |
| International / Navistar | 4120384C1 | |
| AC Delco | 12K842, K120842HD | |
| NAPA | 25‑120842, 25‑120842HD | |
| Gates | K120842, K120842HD | |
| Bando | 12PK2135, 12PK2140, 12PK2145 | |
| Continental Elite | 4120842, 412842X | |
| Goodyear | 4120842 |
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