HomeBelts and Cooling > Water Pump and Related ComponentsGates 42127 Engine Water Pump
Part #: 42127

Gates 42127 Engine Water Pump

Water Pump (Standard)
⚙️ 6 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Water Pump (Standard)
🚗Fitment: Mazda, 626 and B2000
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Reliable Water Pump Replacement for Mazda 626 and B2000

The Gates Water Pump (Standard) part number 42127 is engineered to provide dependable cooling system performance for Mazda 626 and B2000 models. Designed with durable materials and precise fitment, this engine water pump supports efficient engine temperature regulation.

Key Features of Gates Water Pump 42127

  • Housing made from cast aluminum for strength and corrosion resistance
  • Stamped steel impeller designed for standard rotation
  • Includes water pump, two gaskets, and an o-ring for proper sealing
  • Timing belt driven with included pulley for direct compatibility
  • Does not include back housing, thermostat, or fan clutch

About the Gates Water Pump (Standard) Product Line

The Gates Water Pump (Standard) line focuses on providing reliable, OEM-quality water pumps that meet original equipment specifications. This product line emphasizes durable construction and precise fitment, ensuring compatibility with specific vehicle models such as the Mazda 626 and B2000. The standard rotation impeller and timing belt drive style are designed to integrate seamlessly with the engine’s cooling system.

Detailed Product Description

This Gates engine water pump features a cast aluminum housing that offers excellent durability and resistance to corrosion, essential for maintaining long-term cooling system integrity. The stamped steel impeller is engineered for standard rotation, matching the original equipment design to ensure proper coolant flow. The pump is driven by the timing belt and includes a pulley, facilitating straightforward installation and reliable operation. Included with the water pump are two gaskets and an o-ring to help achieve a secure, leak-free seal. Note that this unit does not include the back housing, thermostat, or fan clutch, so those components must be sourced separately if needed.

Common Applications and Issues Addressed

  • Replacement for failing or leaking water pumps in Mazda 626 and B2000 vehicles
  • Resolves overheating caused by inefficient coolant circulation
  • Addresses coolant leaks due to worn seals or gaskets
  • Prevents engine damage from inadequate cooling system performance
  • Restores timing belt driven water pump functionality

Installation Notes and Tips

Ensure the timing belt is properly aligned and tensioned during installation to maintain engine timing accuracy. Use the included gaskets and o-ring to prevent coolant leaks. Verify that the impeller rotation matches the engine’s requirements, which for this pump is standard rotation. Since the back housing, thermostat, and fan clutch are not included, inspect these components separately and replace if necessary to ensure full cooling system reliability.

Quality Assurance and Warranty

Gates water pumps are manufactured to meet or exceed OEM standards, providing reliable performance for Mazda 626 and B2000 models. Part number 42127 undergoes rigorous quality control to ensure durability and fitment accuracy. Warranty details should be confirmed with the product documentation or manufacturer.

BrandGates
Part Number42127
PositionWater Pump (Standard)
Housing MaterialCast aluminum
Impeller MaterialStamped steel
Impeller RotationStandard
Includes Back HousingNo
Thermostat And Housing IncludedNo
ContentsWater pump, 2 gaskets, o-ring
Drive StyleTiming belt
Fan Clutch IncludedNo
Pulley IncludedYes
Timing Belt DrivenYes

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1987Mazda6262.0LL4GASN/AW/Round Tooth Sprockets; Timing Belt Driven; Water Pump (Standard)
1987MazdaB20002.0LL4GASN/ATiming Belt Driven; Water Pump (Standard)
1986Mazda6262.0LL4GASN/AW/Round Tooth Sprockets; Timing Belt Driven; Water Pump (Standard)
1986MazdaB20002.0LL4GASN/AW/Round Tooth Sprockets; Timing Belt Driven; Water Pump (Standard)
1985Mazda6262.0LL4GASN/AW/Round Tooth Sprockets; Timing Belt Driven; Water Pump (Standard)
1984Mazda6262.0LL4GASN/AW/Round Tooth Sprockets; Timing Belt Driven; Water Pump (Standard)

* 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:

131-20251361811145-129018-3892-7022-F10320554226016252-1514212751-19515116155-911155736128AG1150108AG115010A8AG115010B8AG115010F94212797076AW9111BWP-702CP9111DP929F80115010EFE7915010FE7915010BFE7915010CFE7915010DFE7915010EFE7915010JFE7915010RMJFP1673P-2322PC702PWP702T2118US9111WP-702WP-F103WPZ012

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