HomeBelts and Cooling > Accessory Drive Belt System ComponentsGates K030311SF Serpentine Belt - Air Conditioning or Water Pump
Part #: K030311SF

Gates K030311SF Serpentine Belt - Air Conditioning or Water Pump

Premium OE Stretch Fit Micro-V Belt, Water Pump and Air Conditioning
⚙️ 17 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$24.45Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Premium OE Stretch Fit Micro-V Belt, Water Pump and Air Conditioning
🚗Fitment: Mazda, 3, 3 Sport, CX-30, and CX-50
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Serpentine Belt for Mazda Vehicles

The Gates Premium OE Stretch Fit Micro-V Belt K030311SF is engineered to provide precise fit and dependable performance for select Mazda models. Designed as an automotive v-ribbed belt with stretch fit technology, it ensures optimal accessory drive system operation.

  • Top width options: 0.42 inch and 11 mm for accurate fitment
  • Cord material constructed from durable nylon for strength and flexibility
  • Cross section designation: K, suitable for specific accessory drive systems
  • Effective length of 31.107 inches (790 mm) and outside circumference of 31.83 inches (808 mm)
  • Three ribs for consistent power transmission and reduced slippage
  • Belt material made from EPDM for resistance to heat, ozone, and wear
  • Installation requires a simple 3 mm zip tie tool
  • Includes detailed installation instructions (Sheet i) for proper setup

About the Premium OE Stretch Fit Micro-V Belt Line

The Premium OE Stretch Fit Micro-V Belt line by Gates is designed to meet or exceed original equipment specifications. This product line focuses on stretch fit technology, which allows for easier installation without the need for tensioners or complex adjustments. The K030311SF part number represents a precise OE exact and OE performance rated belt, ensuring compatibility and reliable operation in the accessory drive belt system.

Product Details and Specifications

This serpentine belt features a K cross section with three ribs, providing a stable and efficient power transfer to engine accessories. The nylon cord material enhances tensile strength while maintaining flexibility, and the EPDM belt compound offers durability against environmental factors such as heat and ozone exposure. With an effective length of approximately 31.1 inches and an outside circumference near 31.8 inches, this belt is tailored for specific Mazda models including the Mazda 3, Mazda 3 Sport, CX-30, and CX-50.

Common Applications and Problem Solving

  • Replacement for worn or cracked accessory drive belts in Mazda 3 and CX series vehicles
  • Addresses belt slippage and squealing noises caused by stretched or damaged belts
  • Prevents accessory drive system failures related to belt degradation
  • Ensures proper operation of alternator, power steering pump, and air conditioning compressor
  • Maintains engine performance by providing consistent accessory drive tension

Installation Notes and Tips

Installation of the Gates K030311SF belt requires a 3 mm zip tie tool to facilitate the stretch fit process. The included instruction sheet (Sheet i) provides step-by-step guidance to ensure correct placement and tension. This stretch fit design eliminates the need for belt tensioners, simplifying the replacement procedure on compatible Mazda models.

Quality Assurance and Warranty

Gates Premium OE Stretch Fit Micro-V Belts are manufactured to meet stringent quality standards, offering OE exact and OE performance ratings. The use of EPDM and nylon materials ensures long service life under normal operating conditions. While specific warranty details are not provided, Gates products typically come with manufacturer-backed quality assurance to support reliability in automotive applications.

BrandGates
Part NumberK030311SF
PositionPremium OE Stretch Fit Micro-V Belt, Water Pump and Air Conditioning
Top Width.42
Top Width11
Cord MaterialNylon
Cross Section DesignationK
Effective Length31.107
Effective Length790
Outside Circumference31.83
Outside Circumference808
Installation Tools Requirements3 mm zip tie
Instruction Manual IncludedSheet i
TypeAutomotive v-ribbed belt (stretch fit)
Rib Quantity3
Washer Pump IncludedEpdm
Belt MaterialEpdm
Cord MaterialNylon
Installation InstructionsSheet i
OE Comparison RatingOe exact
OE Comparison RatingOe performance
SectionK
TypeAutomotive v-ribbed belt (stretch fit)

This part fits 17 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2024MazdaCX-302.5LL4GASWater Pump3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2024MazdaCX-502.5LL4GASAir ConditioningPremium OE Stretch Fit Micro-V Belt
2023MazdaCX-302.5LL4GASWater Pump3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2023MazdaCX-502.5LL4GASAir ConditioningPremium OE Stretch Fit Micro-V Belt
2022Mazda32.0LL4GASWater Pump3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2022Mazda3 Sport2.0LL4GASWater PumpModels made in Mexico.; 3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2022MazdaCX-302.5LL4GASWater Pump3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2021Mazda32.0LL4GASWater Pump3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2021Mazda32.5LL4GASWater PumpModels made in Mexico.; 3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2021Mazda3 Sport2.0LL4GASWater Pump3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2021Mazda3 Sport2.5LL4GASWater PumpModels made in Mexico.; 3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2021MazdaCX-302.5LL4GASWater Pump3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2020Mazda32.5LL4GASWater PumpModels made in Mexico.; W/O SKYACTV; 3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2020Mazda3 Sport2.5LL4GASWater PumpModels made in Mexico.; W/O SKYACTV; 3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2020MazdaCX-302.5LL4GASWater Pump3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2019Mazda32.5LL4GASWater PumpW/O SKYACTV; Models made in Mexico.; 3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt
2019Mazda3 Sport2.5LL4GASWater PumpW/O SKYACTV; Models made in Mexico.; 3mm Zip Tie Required for Installation; Premium OE Stretch Fit Micro-V Belt

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

25-030311SF3K311SFPX1315908

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.