DAYCO® POLY RIB® W-Profile Serpentine Belts are the most innovative advancement in serpentine belt design in more than 30 years. Developed through extensive laboratory and actual road mileage testing, this unique rib profile EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and help eliminate noisy belt conditions.
Constructed with aramid-reinforced EPDM compounds, the Dayco W Poly Rib serpentine belt delivers more than just
OE-required quality. It delivers the solution to troublesome drive problems.
POLY RIB W-Profile Benefits Video:
Top Width (in)
Effective Length (in)
Effective Length (mm)
Outside Circumference (in)
Outside Circumference (mm)
EPDM, Aramid Reinforced
SAE J1459, SAE J2432
Minimum Operating Temperature (C)
Maximum Operating Temperature (C)
Minimum Operating Temperature (F)
Maximum Operating Temperature (F)
Alternate/OEM Part Number(s): 079903137AG, 30777431, 9936591090, MD326782, MD352286, MD365262, XX008736BA
DAYCO Warranty Information:12 months/12,000 miles. Timing Belt Component Kits/60,000 miles, or the life of the automotive manufacturer's original recommended replacement interval.