Gates K030315SF Serpentine Belt - Water Pump

Gates Stretch Fit Belt for Mazda Applications

The Gates K030315SF Premium OE Stretch Fit Micro-V Belt is built for stretch-fit accessory drive systems that require precise belt length and controlled installation. It uses Gates self-tensioning stretch-fit technology to deliver the correct fit on select Mazda water pump applications and other listed vehicles.

For Mazda CX-5, Mazda CX-90, Mazda MX-5, Mazda MX-5 Miata, Mazda 3, Mazda 3 Sport, and Mazda 6 applications, this Gates serpentine belt is specified as an OE Exact and OE Performance replacement. The K030315SF part number is commonly searched for stretch-fit water pump belt service on Mazda models from 2014 through 2025.

Key Features

• Premium OE Stretch Fit Micro-V Belt from Gates
• Automotive V-ribbed belt with stretch-fit design
• 3-rib construction for listed applications
• EPDM belt material for durable belt service
• Nylon cord material for strength and stability
• OE Exact and OE Performance comparison ratings
• Special installation tool required for proper fitment
• Effective length: 31.54 in. / 801 mm
• Outside circumference: 32 in. / 813 mm
• Top width: .42 in. / 11 mm

Product Details

Gates Premium OE Stretch Fit Micro-V Belt line is made for unique drive systems that do not use a conventional tensioner adjustment. The belt is engineered to fit tightly and maintain proper drive engagement on stretch-fit accessory systems, including water pump applications listed for Mazda CX-5, Mazda MX-5 Miata, Mazda 3, Mazda 6, and Mazda CX-90. Part number K030315SF is a direct search match for buyers looking for a Gates stretch-fit serpentine belt with OE-style dimensions and materials.

This part cross-references Continental 4030319S and Dayco E030313 for the same application.

What This Belt Helps Address

• Cracked, glazed, or worn accessory drive belt surfaces
• Squealing or slipping from an aging stretch-fit belt
• Loss of proper belt drive on water pump applications
• Incorrect belt fit on Mazda stretch-fit systems
• Service replacement needs for OE-style belt maintenance

Installation Notes and Tips

• Special installation tool required.
• Follow the included Sheet B instructions for installation guidance.
• Some Mazda applications require a 3 mm zip tie during installation.
• Verify the vehicle’s engine and application notes before ordering, especially for Mazda 3 and Mazda 3 Sport models made in Japan and SKYACTIV-specific listings.
• Confirm the belt path and seating before starting the engine.

Quality Assurance

Gates is a recognized supplier of OE-style belt solutions, and this stretch-fit Micro-V belt is built to meet the demands of listed Mazda accessory drive systems. The K030315SF is specified with EPDM construction, nylon cord reinforcement, and OE comparison ratings for exact-fit and performance-focused replacement needs.