HomeBelts and Cooling > Hoses and PipesGates 23651 Radiator Coolant Hose - Heater (Lower)
Part #: 23651

Gates 23651 Radiator Coolant Hose - Heater (Lower)

Molded Coolant Hose, Heater (Lower)
⚙️ 9 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Coolant Hose, Heater (Lower)
🚗Fitment: Mazda, 3 and 3 Sport
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Gates Molded Coolant Hose 23651

The Gates Molded Coolant Hose 23651 is designed specifically for Mazda 3 and Mazda 3 Sport models. Constructed from durable EPDM and plastic materials, this radiator coolant hose ensures reliable performance in your vehicle's cooling system.

  • Made from high-quality EPDM and plastic for heat and chemical resistance
  • Molded design for precise fit and secure connections
  • Centerline length of approximately 62.1 inches (1577 mm) for accurate routing
  • End 1 inside diameter: 0.63 inches (16 mm); End 2 inside diameter: 0.66 inches (17 mm)
  • Includes one branch with an inside diameter of 0.25 inches (6 mm)
  • Does not contain a spring or quick connect fittings
  • Compatible with Mazda 3 and Mazda 3 Sport models

Details on the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on precision-molded hoses that provide exact fitment and reliable coolant flow. This product line is engineered to meet OEM specifications, offering a molded construction that reduces the risk of leaks and improves durability. The 23651 part is a modular hose with a branch component, designed to integrate seamlessly into the cooling system of compatible Mazda vehicles.

Product Description and Specifications

The Gates 23651 radiator coolant hose features a molded design made from EPDM and plastic, materials known for their resistance to heat, ozone, and automotive fluids. The hose has a centerline length of 1577 mm (62.1 inches), ensuring proper fitment and routing within the engine bay. It includes one branch with a smaller diameter of 0.25 inches (6 mm), allowing for additional coolant flow paths as required by the vehicle's cooling system. The hose ends have inside diameters of 0.63 inches (16 mm) and 0.66 inches (17 mm), providing secure connections to the radiator and engine components. This hose does not contain springs or quick connect fittings, emphasizing a straightforward, molded design for durability and reliability.

Applications and Common Issues Addressed

  • Replacement of worn or cracked radiator coolant hoses in Mazda 3 and Mazda 3 Sport
  • Prevention of coolant leaks caused by hose degradation
  • Restoration of proper coolant flow to avoid engine overheating
  • Repair of cooling system branches requiring modular hose components
  • Upgrade to a molded hose for improved fit and reduced risk of failure

Installation Notes and Tips

Ensure the engine is cool before removing the old coolant hose to prevent burns. Verify the hose routing matches the original configuration, paying attention to the branch connection. Use appropriate clamps to secure the hose ends firmly without over-tightening, which could damage the hose. Inspect surrounding components for wear or damage during installation. The molded design of the Gates 23651 hose facilitates a precise fit, reducing installation time and potential leaks.

Quality Assurance and Warranty

Gates Molded Coolant Hoses are manufactured to meet or exceed OEM standards for durability and performance. The EPDM and plastic materials provide resistance to heat, pressure, and automotive fluids, ensuring long service life. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed quality assurance to support reliable operation in Mazda 3 and Mazda 3 Sport vehicles.

BrandGates
Part Number23651
PositionMolded Coolant Hose, Heater (Lower)
MaterialEpdm, plastic
End 1 Inside Diameter.63
End 1 Inside Diameter16
End 2 Inside Diameter.66
End 2 Inside Diameter17
Contains SpringNo
Centerline Length1577
Centerline Length6
Centerline Length62.1
End 3 Inside Diameter.25
Branch Quantity1
9839Yes
98450
Modular ComponentsBranch
Modular HoseYes
MoldedYes
Number of Quick Connect Fittings0

This part fits 9 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersFuel TypePositionNotes
2009Mazda3Manual2.0LL4GASHeater (Lower)Molded Coolant Hose
2009Mazda3Manual2.3LL4GASHeater (Lower)Molded Coolant Hose
2009Mazda3 SportManual2.0LL4GASHeater (Lower)Molded Coolant Hose
2008Mazda3Manual2.0LL4GASHeater (Lower)Molded Coolant Hose
2008Mazda3Manual2.3LL4GASHeater (Lower)Molded Coolant Hose
2007Mazda3Manual2.0LL4GASHeater (Lower)Molded Coolant Hose
2007Mazda3Manual2.3LL4GASHeater (Lower)Molded Coolant Hose
2006Mazda3Manual2.0LL4GASN/AW/Branched Hose; Molded Coolant Hose
2006Mazda3Manual2.3LL4GASN/AW/Branched Hose; Molded Coolant Hose

* 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:

163452365127012X64546BN8K6124YFBN8K6124YJ

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