Gates K040355 Serpentine Belt

OE Micro-V Belt for Accessory Drive Systems

The Gates K040355 Premium OE Micro-V Belt is a precision-fit serpentine belt built for accessory drive applications that demand OE-style size, construction, and material match. It is used across import and domestic vehicles, including Mercedes-Benz G550, C63 AMG, E63 AMG, and GLC63 AMG applications, where correct belt length and rib profile are critical for stable operation.

Key Features

• Gates Premium OE Micro-V Belt, part number K040355
• 4-rib automotive V-ribbed belt with K cross section
• EPDM belt material for durable accessory drive performance
• Polyester cord construction for consistent tension handling
• OE Performance rating for factory-style fit and function
• Effective length: 35.56 in. / 903 mm
• Outside circumference: 36.125 in. / 918 mm
• Top width: 0.56 in. / 14 mm

Product Details

Gates builds the K040355 to match OE size, construction, and materials so the belt tracks correctly on the accessory drive system. The EPDM belt compound and polyester cord support consistent operation in alternator, power steering, water pump, and air conditioning drive applications listed in the fitment data. This part cross-references Continental 4K900 and Dayco 5040355 for the same application.

Compatible With Mercedes-Benz G550, C63 AMG, C63 AMG S, E63 AMG, E63 AMG S, G63 AMG, GLC63 AMG, GLC63 AMG S, S560, S63 AMG, Maybach S560, Maybach S650, AMG GT, AMG GT 63, AMG GT 63 S, AMG GT C, AMG GT R, and AMG GT S applications where the listed belt routing and position match. The Gates K040355 is also used in select Chrysler, Dodge, Mitsubishi, Hyundai, Mazda, Suzuki, Honda, Nissan, Kia, Ford, and Mercury accessory drive applications shown in the fitment table.

Common Problems This Belt Can Address

• Squealing or chirping from a worn serpentine belt
• Cracking, glazing, or rib wear on the existing belt
• Loss of proper accessory drive tension
• Charging, steering, or cooling drive issues caused by belt wear
• Incorrect belt length after prior replacement

Installation Notes and Tips

• Verify the vehicle year, make, model, and accessory position before ordering.
• Match the belt routing to the application notes, including alternator, power steering, water pump, or A/C positions.
• Check pulley condition and belt tensioner operation before installation.
• Confirm clearance notes such as W/O Active Suspension or W/O A.C. where listed.
• Inspect the full drive system for wear so the new belt tracks properly.

Quality Assurance

Gates positions the Premium OE Micro-V Belt line as an OE-style replacement program with matched dimensions and materials for factory-level fitment. The K040355 is built to OE Performance standards for the listed applications.