Keep the alternator, air conditioning, fan and other belt-driven accessories turning with a fresh Dayco Serpentine Belt (P/N 5080820). This EPDM, aramid-reinforced poly-rib belt drops in as a direct-fit replacement for the listed applications, including the 1989-1991 Dodge D250, D350, W250 and W350 [L6-5.9L], 2000-2003 Ford F-650 and F-750 [L6-7.2L], 2006-2007 and 2009-2010 Freightliner M2 106, and 2014-2019 Peterbilt 389 [6-12.9L] — see the "Vehicles it fits" section for the full 47-application list.
- Material: EPDM, aramid-reinforced construction in black.
- Profile: 8-rib K-section with a straight rib profile and standard rib depth.
- Dimensions: 1.10 in top width, 82.09 in (2085.09 mm) effective length, 82.72 in (2101.09 mm) outside circumference.
- Ratings: operating range of -45°F to 212°F (-42.7°C to 100°C); built to SAE J1459 and SAE J2432 standards.
A serpentine belt loops over the accessory pulleys to transfer crankshaft rotation to the alternator, air-conditioning and fan drive on this main accessory drive. Chirping or squealing, visible cracking or glazing, and missing rib material are signs the belt may need replacing. Country of origin: Mexico.
Interchange: 8K817 · 8K820 · K080820HD · 821K8 · 8PK2080 · 8PK2085 · 8PK2090 · K080820 · 4080820 · 4080820X · PK080820 · 820K8 · 1080820 · 820K8MK · JK8-825 · JK8825 · JK8826 · 25-080820 · 25080820 · 25-080820HD · 25080820HD · Manufacturer part number 5080820.
This part cross-references / interchanges with the following part numbers:
8K817, 8K820, K080820HD, 821K8, 8PK2080, 8PK2085, 8PK2090, K080820, 4080820, 4080820X, PK080820, 820K8, 1080820, 820K8MK, JK8-825, JK8826, 25-080820, 25-080820HD
Frequently Asked Questions
What accessories does this belt drive?
It routes over the accessory pulleys to transfer crankshaft rotation to components such as the alternator, air-conditioning compressor and fan on the listed applications.
What is the belt made of?
It is an EPDM, aramid-reinforced poly-rib belt in black, built to SAE J1459 and SAE J2432 standards.
How many ribs does it have?
It has 8 ribs in a K-section with a straight rib profile and standard rib depth, with a top width of 1.10 in.
What are its dimensions?
Effective length is 82.09 in (2085.09 mm) and outside circumference is 82.72 in (2101.09 mm).
How do I know if it needs replacing?
Signs the belt may need replacing include chirping or squealing, visible cracking or glazing, or missing rib material. Diagnose the cause before replacing.
