Dayco 5030335 Serpentine Belt - Power Steering or Water Pump and Idler

Dayco 5030335 Serpentine Belt Overview

The Dayco 5030335 serpentine belt is a K-section accessory drive belt built for specific Toyota, Scion, and Nissan applications. It uses EPDM construction with aramid reinforcement to support stable operation across a wide temperature range and consistent rib tracking in accessory drive systems.

With a 3-rib, straight-rib profile and black EPDM construction, this belt is specified for power steering, water pump, and idler drive applications where the correct belt length and rib profile are critical. Dayco 5030335 is a direct-fit option for select Toyota Prius, Toyota Echo, Scion xA, and Scion xB applications.

Key Features

• EPDM construction with aramid reinforcement for durability in accessory drive service
• 3-rib K-section design for the specified belt routing
• Straight rib profile for consistent pulley engagement
• Effective length: 33.50 in. (850.90 mm)
• Outside circumference: 34.16 in. (867.67 mm)
• Top width: 0.40 in.
• Operating temperature range: -45°F to 212°F
• Built to SAE J1459 and SAE J2432 standards

Detailed Description

Dayco 5030335 is an accessory drive serpentine belt engineered for vehicles that require a 3-rib K-section belt with a 33.50-inch effective length. The EPDM rubber compound helps maintain flexibility and wear resistance, while aramid reinforcement adds strength for demanding accessory drive loads. This makes it a practical replacement for vehicles that rely on accurate belt tension and pulley alignment to drive components such as the power steering system, water pump, and idler assembly.

Fits 2004-2009 Toyota Prius, Water Pump and Idler. Fits 2000-2005 Toyota Echo, Power Steering. Fits 2004-2006 Scion xA, Power Steering. Fits 2004-2006 Scion xB, Power Steering. This part cross-references Toyota (e.g., 90916-02570, 90916-02575) for the same application.

What This Belt Helps Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or rib wear on the existing belt
• Loss of proper drive to the power steering system
• Reduced belt performance in water pump and idler applications
• Incorrect belt length or rib count during replacement

Installation Notes and Tips

Verify the belt routing, rib count, and effective length before installation. Confirm the application by vehicle year, make, model, and driven accessory position, since this belt is used in both power steering and water pump/idler configurations. Inspect pulleys, tensioners, and idlers for wear or misalignment before installing the new belt to help prevent premature belt damage.

Quality Assurance

Dayco manufactures this belt to SAE J1459 and SAE J2432 standards, with EPDM and aramid-reinforced construction selected for accessory drive durability and temperature stability.