Gates K040338 Serpentine Belt - Air Conditioning or Power Steering

Gates Premium OE Micro-V Belt K040338

The Gates Premium OE Micro-V Belt K040338 is a serpentine belt built for accessory drive applications that demand OE-style fit and consistent operation. It uses EPDM belt material with polyester cord construction and a 4-rib, K-section profile to match the original belt dimensions used on select import and domestic vehicles.

Compatible With BMW X5 air conditioning, BMW 320i air conditioning, Mazda Miata power steering, Toyota Tundra air conditioning, Nissan Altima air conditioning, Chrysler Sebring air conditioning, and Dodge Avenger air conditioning applications, this belt is built around the OE size, construction, and materials called out by Gates for dependable performance. The K040338 part number is also commonly searched for replacement planning on these vehicles.

Key Features

• Gates Premium OE Micro-V Belt line for OE-style replacement fit
• Part number K040338
• 4-rib automotive V-ribbed belt design
• EPDM belt material for durability in accessory drive service
• Polyester cord material for stable belt construction
• Top width: 0.56 in. / 14 mm
• Effective length: 33.86 in. / 860 mm
• Outside circumference: 34.375 in. / 874 mm
• OE Performance comparison rating

Product Details

Gates Micro-V belts are engineered to match OE dimensions, construction, and materials so the accessory drive system can operate as intended. This belt’s K-section profile, 4-rib layout, and EPDM compound are specified for select BMW X5 and BMW 320i air conditioning systems, as well as Mazda Miata power steering and other listed applications. If you are replacing a worn serpentine belt on a Toyota Tundra, Nissan Altima, Chrysler Sebring, or Dodge Avenger, K040338 provides a direct-fit replacement path based on the cataloged vehicle data.

This part cross-references Continental 4K860 for the same application.

Common Problems This Belt Can 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 air conditioning compressor
• Reduced power steering belt performance on listed Mazda Miata applications
• Belt stretch or fitment issues from an incorrect replacement size

Installation Notes and Tips

• Verify the vehicle’s engine and accessory configuration before ordering, especially on Mazda Miata models with and without air conditioning.
• Inspect pulleys, tensioners, and idlers for wear before installing the new belt.
• Confirm belt routing against the underhood diagram or service information.
• Check the old belt length and rib count against K040338: 4 ribs, 860 mm effective length.
• Use the listed fitment data for BMW X5, BMW 320i, Toyota Tundra, Nissan Altima, Chrysler Sebring, and Dodge Avenger applications.

Quality Assurance

Gates positions this Premium OE Micro-V Belt line as an OE-style replacement built to the same size and material standards used in original equipment applications. That focus on OE comparison helps support consistent fitment and accessory drive performance across the listed vehicles, including BMW X5, BMW 320i, and Mazda Miata applications.