Gates K040390 Serpentine Belt

Gates Premium OE Micro-V Belt K040390

The Gates K040390 is a premium OE Micro-V serpentine belt built for import and domestic vehicles that need precise belt fit and consistent accessory drive performance. With OE-matched size, construction, and materials, it supports dependable operation across applications such as the Honda Accord, Mitsubishi Eclipse, and Hyundai Sonata.

Key Features

• Premium OE Micro-V belt from Gates
• Part number: K040390
• 4-rib automotive V-ribbed belt design
• EPDM belt material for durability in accessory drive service
• Polyester cord construction for stable belt strength
• OE Performance rating for direct-replacement use
• Effective length: 39.13 in. (994 mm)
• Outside circumference: 39.625 in. (1008 mm)
• Top width: 0.56 in. (14 mm)

Product Details

Gates Premium OE Micro-V Belt line is engineered to match original equipment dimensions and material specifications, helping maintain proper drive alignment and accessory operation. The K040390 is a K-section, standard automotive V-ribbed belt that is commonly used in accessory drive belt system applications where accurate fit is important. If you are replacing a worn serpentine belt on a 2005-2007 Honda Accord or servicing a Mitsubishi Eclipse, this belt provides the OE-style dimensions needed for a direct replacement. This part cross-references Continental 4K990 and Dayco 5040390 for the same application.

What It Helps Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or fraying on the existing belt
• Loss of proper drive to the alternator, power steering, air conditioning, or water pump
• Belt fit issues caused by incorrect length or rib profile
• Reduced accessory performance from belt slip

Installation Notes and Tips

Verify the belt routing and compare the old belt’s dimensions before installation. Confirm the rib count, effective length, and outside circumference match the vehicle application. Compatible fitment includes 2005-2007 Honda Accord, N/A; 1990-1998 Mitsubishi Eclipse, Water Pump and Alternator; 1989-1998 Hyundai Sonata, Water Pump and Alternator; 1995-1998 Mazda Protege, Power Steering and Air Conditioning; and 1989-1997 Mitsubishi Galant, Water Pump and Alternator. Additional fitment includes 1997-1998 Mitsubishi Montero, Fan and Power Steering; 1995-1997 Suzuki Esteem, Power Steering and Air Conditioning; and 1986-1990 Mazda 323, Power Steering and Air Conditioning. Use the vehicle’s belt routing diagram and inspect pulleys and tensioner components before final installation.

Quality Assurance

Gates is known for OE-style belt engineering, and this Micro-V belt is built to the brand’s precision-fit standards for consistent accessory drive service. The OE Performance rating reflects its role as a direct replacement belt for confirmed applications.