HomeBelts and Cooling > Hoses and PipesGates 23659 Radiator Coolant Hose - Lower
Part #: 23659

Gates 23659 Radiator Coolant Hose - Lower

Molded Coolant Hose, Lower
⚙️ 3 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$75.98Free 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
📦Molded Coolant Hose, Lower
🚗Fitment: Mazda, 3
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Radiator Coolant Hose for Mazda 3

The Gates Molded Coolant Hose 23659 is engineered to provide dependable cooling system performance for Mazda 3 vehicles. Designed with durable EPDM and plastic materials, this radiator coolant hose ensures efficient coolant flow and long-lasting service.

  • Constructed from high-quality EPDM and plastic for heat and chemical resistance
  • Molded design for precise fit and secure connections
  • Centerline length approximately 19.2 to 20 inches (488 mm)
  • Inside diameters of 1.23 inches (31 mm) on both ends and a branch diameter of 0.80 inches
  • Single branch modular hose without spring reinforcement or quick connect fittings

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on delivering hoses that are pre-formed to exact specifications, reducing installation time and improving fitment accuracy. This product line uses durable EPDM and plastic materials to withstand the thermal and chemical demands of automotive cooling systems. The molded construction of part number 23659 ensures compatibility with the cooling system layout of the Mazda 3, providing a reliable coolant path without the need for additional modifications.

Detailed Product Description

The Gates Molded Coolant Hose 23659 is designed specifically for the Mazda 3, featuring a molded shape that matches the vehicle’s cooling system routing. Made from EPDM rubber and plastic, this hose resists heat, ozone, and coolant chemicals, maintaining integrity under operating conditions. The hose includes one branch with an inside diameter of 0.80 inches, while both main ends measure 1.23 inches (31 mm) in diameter, ensuring proper coolant flow. With a centerline length close to 19.2 to 20 inches (488 mm), it fits precisely without stretching or kinking. This hose does not contain a spring reinforcement or quick connect fittings, making it suitable for applications requiring a molded, modular hose solution.

Common Applications and Issues Addressed

  • Replacement of worn or cracked radiator coolant hoses on Mazda 3 models
  • Resolving coolant leaks caused by hose degradation or damage
  • Preventing overheating due to compromised coolant flow
  • Eliminating hose collapse or kinking in the cooling system
  • Maintaining proper coolant circulation for engine temperature regulation

Installation Notes and Tips

Ensure the engine is cool before removing the old hose to avoid burns. Verify that the hose routing matches the original to prevent interference with other engine components. Use appropriate clamps to secure the hose ends firmly, but avoid overtightening which can damage the hose. Inspect adjacent components for wear or damage during installation. The molded design of this hose simplifies alignment and fitment on the Mazda 3 cooling system.

Quality Assurance and Warranty

Gates Molded Coolant Hose 23659 is manufactured to meet or exceed OEM specifications for durability and performance. The use of EPDM and plastic materials ensures resistance to heat and coolant chemicals, contributing to a longer service life. While specific warranty details are not provided, Gates products typically come with a limited warranty against defects in material and workmanship when installed according to manufacturer guidelines.

BrandGates
Part Number23659
PositionMolded Coolant Hose, Lower
MaterialEpdm, plastic
End 1 Inside Diameter1.23
End 1 Inside Diameter31
End 2 Inside Diameter1.23
End 2 Inside Diameter31
Contains SpringNo
Centerline Length19.2
Centerline Length20
Centerline Length488
End 3 Inside Diameter.80
Branch Quantity1
9839Yes
98450
Modular ComponentsBranch
Modular HoseYes
MoldedYes
Number of Quick Connect Fittings0

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2009Mazda32.3LL4GASLowerMolded Coolant Hose
2008Mazda32.3LL4GASLowerMolded Coolant Hose
2007Mazda32.3LL4GASLowerMolded 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:

1635120549S2365966157L33X15185

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