Gates K030305SF Serpentine Belt - Air Conditioning or Water Pump

Gates Stretch Fit Belt for Mazda Applications

The Gates K030305SF Premium OE Stretch Fit Micro-V Belt is built for Mazda accessory drive systems that use a stretch-fit design. It uses self-tensioning technology to deliver a precise fit on select Mazda 3, CX-30, CX-5, CX-50, CX-9, and Mazda 6 applications.

Gates Micro-V Stretch Fit belts are made for unique drive systems where correct belt length and installation method matter. The K030305SF is an OE Exact and OE Performance replacement option for water pump and air conditioning drive applications listed below.

Key Features

• Premium OE Stretch Fit Micro-V Belt for stretch-fit accessory drive systems
• Part number K030305SF
• 3-rib V-ribbed belt design
• EPDM belt material with nylon cord reinforcement
• Effective length: 30.5 in. / 775 mm
• Outside circumference: 31.22 in. / 793 mm
• Top width: 0.42 in. / 11 mm
• OE Exact and OE Performance comparison ratings
• Installation requires a 3 mm zip tie and Sheet F instructions

Product Details

Gates Premium OE Stretch Fit Micro-V Belt K030305SF is engineered for Mazda vehicles that use a stretch-fit serpentine belt layout. The belt’s EPDM construction and nylon cord material support consistent fitment on the specified water pump and air conditioning positions, while the stretch-fit design eliminates the need for a conventional tensioner on these applications. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Fits 2023-2025 Mazda 3, Water Pump. Fits 2023-2025 Mazda 3 Sport, Water Pump. Fits 2021-2025 Mazda CX-30, Water Pump. Fits 2019-2025 Mazda CX-5, Water Pump. Fits 2023-2025 Mazda CX-50, Air Conditioning. Fits 2016-2023 Mazda CX-9, Water Pump. Fits 2018-2021 Mazda 6, Water Pump.

Common Issues This Belt Can Address

• Cracking, glazing, or wear on the existing serpentine belt
• Noise from a worn or stretched accessory drive belt
• Loss of proper drive engagement on the water pump or A/C system
• Incorrect belt length for a stretch-fit Mazda drive system
• Service replacement needs on Mazda 3, CX-30, CX-5, CX-50, CX-9, and Mazda 6 applications

Installation Notes and Tips

Use the specified 3 mm zip tie during installation and follow Sheet F instructions for the stretch-fit procedure. Confirm the vehicle application, engine accessory layout, and position before installation. This belt is intended for the listed Mazda models and positions only, including Mazda 3 and CX-5 water pump applications and Mazda CX-50 air conditioning applications.

Quality Assurance

Gates positions this Micro-V Stretch Fit belt as an OE-style replacement for unique stretch-fit drive systems, with coverage focused on proper fit and performance for the listed Mazda applications.