Roadmax 4K350AP Serpentine Belt

Roadmax 4K350AP Serpentine Belt Overview

The Roadmax 4K350AP is an automotive V-ribbed belt built for accessory drive service where dependable OE performance matters more than premium-level output. Made with EPDM and a polyester cord, it is a practical choice for drivers maintaining a Toyota Hilux, Hyundai Elantra, Kia Sportage, or other listed applications.

Roadmax positions this standard belt line for budget-conscious repairs that still need consistent fit and function. The 4K350AP follows the common 4-rib, K-section layout used across many alternator, air conditioning, power steering, and water pump drive systems.

Key Features

• EPDM construction for everyday accessory drive durability
• Polyester cord reinforcement for stable belt tension and tracking
• 4-rib, K-section design for listed OE-style applications
• 14 mm top width and 35.1 in effective length
• 35.67 in outside circumference for application matching
• OE Performance grade for standard replacement service
• Roadmax 4K350AP part number for catalog and fitment lookup

Product Details

This Roadmax serpentine belt is engineered as a standard automotive V-ribbed belt for accessory drive systems. The EPDM belt material is commonly used in modern drive belts for wear resistance and stable operation, while the polyester cord helps maintain belt shape under load. With a 4-rib profile and 14 mm top width, the 4K350AP is sized for specific OE-style routing requirements rather than universal use.

Fitment coverage includes long-tail search applications such as Fits 2007-2012 Hyundai Elantra, Alternator and Water Pump; Fits 2006-2010 Kia Sportage, Alternator and Water Pump; Fits 2005-2009 Hyundai Tucson, Alternator; and Fits 1994-1999 BMW 318i, Air Conditioning. It also applies to select Toyota Hilux accessory drive applications, including 2018-2020 and 2024 models. This part cross-references Gates K040350 for the same application.

Common Uses

• Restoring alternator drive operation when the existing belt is worn or glazed
• Correcting belt noise caused by cracking, rib wear, or contamination
• Replacing a stretched belt that no longer maintains proper tension
• Addressing accessory drive slip on air conditioning, power steering, or water pump systems
• Supporting OE-style service on listed Hyundai, Kia, Toyota, BMW, and Subaru applications

Installation Notes

Verify the belt routing, rib count, and measured length against the vehicle application before installation. Confirm the accessory drive path on the specific engine configuration, especially on vehicles listed with alternator, water pump, air conditioning, or power steering positions. Inspect pulleys, tensioners, and idlers for wear before installing the new belt, since damaged components can shorten belt life.

For fitment verification, match the Roadmax 4K350AP to the exact year, make, model, and accessory drive position shown in the application data. This is especially important for vehicles such as the Hyundai Elantra, Kia Sportage, and Toyota Hilux, where engine and accessory layouts can vary by configuration.

Quality Assurance

Roadmax markets this standard V-ribbed belt as an OE Performance replacement for customers who want quality without stepping up to a premium belt line. The EPDM construction and reinforced cord design support consistent service in everyday accessory drive applications.