Roadmax 4K358AP Serpentine Belt

Roadmax 4K358AP Serpentine Belt Overview

The Roadmax 4K358AP is a standard automotive V-ribbed belt built with EPDM rubber and polyester cord reinforcement for everyday accessory drive service. It is sized for applications that use a 4-rib, K-section serpentine belt, including select Toyota 4Runner, Toyota Tercel, Mitsubishi Galant, Mitsubishi Eclipse, Mitsubishi Endeavor, and Lexus LS600h fitments.

Roadmax positions this Automotive V-Ribbed Belt (Standard) line for budget-conscious buyers who want dependable replacement quality without stepping up to a premium-duty belt. The 4K358AP part number is a direct reference point for matching the correct belt length and rib profile during service.

Key Features

• EPDM construction for common accessory drive belt applications
• Polyester cord material for reinforcement and dimensional stability
• 4-rib, K-section design
• Effective length: 35.83 in. (910 mm)
• Outside circumference: 36.375 in. (924 mm)
• Top width: 0.56 in. (14 mm)
• Standard automotive V-ribbed belt design
• Part number: 4K358AP

Detailed Description

Roadmax 4K358AP is a serpentine belt for accessory drive systems that require a 4-rib belt with a 910 mm effective length. The EPDM belt material is commonly used in modern engine accessory drives, while the polyester cord helps maintain belt shape under operating load. This belt is specified for positions including water pump, power steering, and air conditioning across confirmed applications. For shoppers searching for a Toyota 4Runner air conditioning belt, Mitsubishi Galant power steering belt, or Lexus LS600h water pump belt, 4K358AP provides a direct size and profile match where listed.

This part cross-references Gates K040358 for the same application.

Vehicle Fitment

• Fits 2008-2016 Lexus LS600h, water pump
• Fits 2006-2012 Mitsubishi Eclipse, power steering
• Fits 2010-2011 Mitsubishi Endeavor, power steering
• Fits 2004-2008 Mitsubishi Endeavor, power steering
• Fits 2004-2009 Mitsubishi Galant, power steering
• Fits 1996-2000 Toyota 4Runner, air conditioning
• Fits 1995-1997 Toyota Tercel, air conditioning
• Fits 1991-1993 Toyota Tercel, air conditioning
• Fits 1989-1991 Mitsubishi Galant, air conditioning

What This Belt Helps Address

• Squealing or slipping accessory drive belt noise
• Cracking, glazing, or visible wear on the existing belt
• Loss of proper drive to the power steering, A/C, or water pump circuit
• Incorrect belt length or rib count during replacement
• Service needs on older Toyota and Mitsubishi accessory drive systems

Installation Notes and Tips

Verify the belt routing and compare the old belt’s length, rib count, and profile before installation. Confirm the application position on the vehicle, since this part is listed for water pump, power steering, and air conditioning service depending on the model. Inspect pulleys and tensioner components for wear before installing the new belt to help ensure proper tracking.

Quality Assurance

Roadmax’s standard V-ribbed belt line is aimed at value-focused replacement service while maintaining the material and dimensional specifications needed for listed applications. The 4K358AP is built to match the confirmed fitment data for the vehicles shown above.