HomeBelts and Cooling > Water Pump and Related ComponentsGMB 145-2580 Engine Water Pump
Part #: 145-2580

GMB 145-2580 Engine Water Pump

⚙️ 34 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mazda, 3, 3 Sport, 6, CX-3, CX-30, CX-5, and CX-50
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Reliable Engine Water Pump for Mazda Vehicles

The GMB 145-2580 engine water pump is designed to maintain optimal engine temperature for various Mazda models. Engineered with durable materials and precise specifications, this water pump supports efficient coolant circulation driven by a serpentine belt system.

Key Features of the GMB 145-2580 Water Pump

  • Housing constructed from lightweight aluminum for corrosion resistance
  • Plastic impeller with standard rotation for effective coolant flow
  • Includes back housing and gaskets for a complete seal
  • Compatible with serpentine belt drive systems
  • Hub diameter of 1.969 inches and hub height of 2.52 inches
  • Flange-type pulley design (pulley not included)
  • Installation instructions included for ease of replacement

Detailed Description

The GMB 145-2580 engine water pump is specifically designed for Mazda vehicles including the Mazda 3, 3 Sport, 6, CX-3, CX-5, CX-30, and CX-50. Its aluminum housing offers durability and resistance to corrosion, while the plastic impeller ensures efficient coolant movement within the engine cooling system. The pump operates with a standard impeller rotation and is driven by the serpentine belt, a common setup in these Mazda models. This water pump includes the back housing and necessary gaskets to ensure a proper seal and prevent leaks. The flange-type pulley design allows for compatibility with the existing belt system, although the pulley itself is not included. With a hub diameter of 1.969 inches and a hub height of 2.52 inches, this pump matches OEM specifications for a reliable fit.

Common Applications and Issues Addressed

  • Replacement for failing or leaking water pumps in Mazda 3, 3 Sport, 6, CX-3, CX-5, CX-30, and CX-50
  • Resolves overheating caused by inefficient coolant circulation
  • Eliminates coolant leaks due to worn seals or gaskets
  • Addresses noise or bearing failure in original water pump units
  • Restores proper engine temperature regulation for improved performance

Installation Notes and Tips

Installation of the GMB 145-2580 water pump requires removal of the serpentine belt and old pump assembly. Ensure all old gasket material is fully cleaned from the mounting surface before installing the new pump and gaskets included. Follow the provided instructions carefully to torque bolts to manufacturer specifications. Since the pulley is not included, reuse the existing pulley or source separately if needed. Proper coolant refill and system bleeding are essential after installation to prevent air pockets and ensure optimal cooling system function.

Quality Assurance and Warranty

GMB water pumps are manufactured to meet or exceed OEM standards for fit and function. This pump is made with high-quality aluminum housing and durable plastic impeller components to provide reliable service life. The product includes installation instructions to assist with proper replacement. Warranty details are provided by GMB and typically cover defects in materials and workmanship; please refer to GMB’s official warranty policy for specific terms.

BrandGMB
Part Number145-2580
Pulley IncludedNo
Mounting Hardware IncludedNo
Housing MaterialAluminum
Hub Height2.52
Impeller MaterialPlastic
Impeller RotationStandard
Includes Back HousingYes
Water Pump Drive TypeSerpentine belt
Gaskets IncludedYes
Hub Diameter (in)1.969
Instructions IncludedYes
Pulley TypeFlange

This part fits 34 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2025Mazda32.0LL4N/A
2025MazdaCX-302.0LL4N/A
2025MazdaCX-502.5LL4N/A
2024Mazda32.0LL4N/A
2024MazdaCX-302.0LL4N/A
2024MazdaCX-52.5LL4N/A
2024MazdaCX-502.5LL4N/A
2023Mazda32.0LL4N/A
2023Mazda3 Sport2.0LL4N/A
2023MazdaCX-302.0LL4N/A
2023MazdaCX-52.5LL4N/A
2023MazdaCX-502.5LL4N/A
2022Mazda32.5LL4N/A
2022Mazda3 Sport2.0LL4N/A
2022MazdaCX-302.0LL4N/A
2022MazdaCX-52.5LL4N/A
2021Mazda32.5LL4N/A
2021Mazda3 Sport2.0LL4N/A
2021Mazda62.5LL4N/A
2021MazdaCX-32.0LL4N/A
2021MazdaCX-302.5LL4N/A
2021MazdaCX-52.5LL4N/A
2020Mazda32.0LL4N/A
2020Mazda3 Sport2.0LL4N/A
2020Mazda62.5LL4N/A
2020MazdaCX-32.0LL4N/A
2020MazdaCX-302.5LL4N/A
2020MazdaCX-52.5LL4N/A
2019Mazda32.5LL4N/A
2019Mazda3 Sport2.0LL4N/A
2019Mazda62.5LL4N/A
2019MazdaCX-32.0LL4N/A
2019MazdaCX-52.5LL4N/A
2018Mazda62.5LL4N/A

* 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:

PYFA15010APYFA15010BPYFA15010C

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