Roadmax 4K390AP Serpentine Belt

Roadmax 4K390AP Serpentine Belt Overview

The Roadmax 4K390AP is an automotive V-ribbed belt built for OE-style service at a value-focused price point. Made with EPDM and a polyester cord, it is sized for accessory drive applications that demand consistent belt tracking and dependable operation.

This Roadmax serpentine belt is a practical choice for drivers maintaining older import vehicles, including Honda Accord, Mitsubishi Eclipse, and Hyundai Sonata applications. The 4K390AP part number is also referenced across multiple aftermarket catalogs for the same application.

Key Features

• Automotive V-ribbed belt (standard) with 4 ribs
• EPDM construction for durable accessory drive service
• Polyester cord material for belt stability
• OE Performance grade type
• Top width: 14 mm (.56 in.)
• Effective length: 994 mm (39.13 in.)
• Outside circumference: 1009 mm (39.71 in.)

Product Details

The Roadmax Automotive V-Ribbed Belt (Standard) line is aimed at budget-conscious buyers who want a quality replacement without stepping up to a premium-performance belt. The 4K390AP is designed around standard accessory drive requirements and is commonly searched as a serpentine belt for Honda Accord 2005-2007, Mitsubishi Eclipse 1990-1998, and Hyundai Sonata 1989-1998 fitments. It also appears in listings for Mitsubishi Galant, Montero, and other import applications that use a 4-rib K-section belt profile.

This part cross-references Gates K040390 and Bando 4PK990 for the same application.

Common Issues This Belt Can Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or rib wear on the existing serpentine belt
• Loss of proper drive to the alternator, water pump, or power steering system
• Accessory belt slippage under normal engine operation
• Maintenance replacement for aging OE-style belt service intervals

Installation Notes and Tips

Verify belt routing, rib count, and effective length before installation. This belt is used in multiple positions depending on vehicle application, including water pump and alternator, power steering and air conditioning, fan and alternator, and fan to power steering layouts. Confirm the exact fitment for your vehicle before ordering, especially on Mitsubishi, Hyundai, Mazda, Suzuki, and Honda applications.

Fits 2005-2007 Honda Accord, N/A. Fits 1990-1998 Mitsubishi Eclipse, Water Pump and Alternator. Fits 1989-1998 Hyundai Sonata, Water Pump and Alternator. Fits 1989-1997 Mitsubishi Galant, Water Pump and Alternator. Fits 1997-1998 Mitsubishi Montero, Fan and Power Steering.

Quality Assurance

Roadmax positions this belt as an OE Performance replacement built with EPDM construction and polyester reinforcement for standard accessory drive service. The product line is intended to deliver quality replacement coverage for everyday maintenance on compatible import vehicles.