Dayco 5070530 Poly Rib Serpentine Belt 7-Rib K-Section EPDM Aramid

The Dayco 5070530 Poly Rib Belt is a heavy-duty 7-rib serpentine belt engineered for reliable power transmission across multiple engine accessories. Built with an EPDM and Aramid-reinforced compound, this K-section belt delivers quiet, long-lasting performance even in high-mileage, worn, or misaligned drive systems.

Developed through extensive laboratory and real-world road testing, the rib profile is designed to conform to drive system imperfections and help eliminate common belt noise conditions. The aramid fiber reinforcement resists noise and vibration, while the EPDM compound ensures durability across a wide operating temperature range — from -45°F to 212°F (-42.7°C to 100°C).

Key Features:

• 7-Rib K-Section design for high-load power transmission
• EPDM compound for extended service life and heat resistance
• Aramid fiber reinforcement reduces noise in worn or misaligned pulleys
• Straight rib profile for consistent belt-to-pulley contact
• Meets or exceeds SAE J1459 and SAE J2432 specifications
• Operating temperature range: -45°F to 212°F

Specifications:

• Rib Quantity: 7
• Cross Section: K-Section
• Top Width: 0.96 in
• Effective Length: 52.95 in (1,344.93 mm)
• Outside Circumference: 53.51 in (1,359.16 mm)
• Rib Profile: Straight Rib
• Material: EPDM, Aramid Reinforced
• Color: Black
• UPC: 00036687871305

The Dayco 5070530 is a direct-fit replacement belt that meets OEM quality standards, making it a trusted choice for professional technicians and DIY mechanics alike.