Part #: A1140

Koyorad A1140 Radiator

⚙️ 8 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mazda, Miata
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Overview of Koyorad A1140 Radiator for Mazda Miata

The Koyorad A1140 radiator is engineered specifically for Mazda Miata models, providing reliable cooling performance. Designed with precision, this radiator features a durable aluminum core and plastic tanks to ensure efficient heat dissipation and long-lasting operation.

  • Core Height: 12.625 inches
  • Core Width: 25.5625 inches
  • Core Thickness: 1 inch
  • Single-row aluminum core for effective cooling
  • Inlet and outlet diameter: 1.25 inches
  • Plastic tank construction for corrosion resistance
  • Transmission oil cooler diameter: 1 inch

Detailed Radiator Specifications

The Koyorad A1140 radiator features a single-row aluminum core measuring 12.625 inches in height, 25.5625 inches in width, and 1 inch in thickness. This configuration supports efficient heat exchange while maintaining a compact design suitable for the Mazda Miata. The radiator’s inlet and outlet ports both measure 1.25 inches in diameter, ensuring compatibility with the vehicle’s cooling system hoses. Additionally, the radiator includes a 1-inch diameter transmission oil cooler, integrating cooling functions for both engine and transmission fluids. The plastic tanks are designed to resist corrosion and reduce overall weight without compromising durability.

Compatible Vehicles and Applications

This radiator is compatible with Mazda Miata models requiring part number A1140. It is designed to replace original equipment radiators and restore proper cooling system function.

  • Overheating issues due to worn or damaged radiator cores
  • Coolant leaks from cracked or corroded tanks
  • Reduced cooling efficiency from clogged or bent fins
  • Transmission fluid overheating in models with integrated coolers
  • General radiator failure impacting engine temperature regulation

Installation Notes and Tips

When installing the Koyorad A1140 radiator, ensure all hose connections match the 1.25-inch inlet and outlet diameters. Verify that the transmission oil cooler lines are properly connected to the 1-inch diameter ports. Inspect mounting points for secure fitment and avoid overtightening plastic tank areas to prevent damage. Bleed the cooling system thoroughly after installation to remove air pockets and maintain optimal performance.

Quality Assurance and Warranty

Koyorad radiators are manufactured to meet OEM specifications, using high-quality aluminum cores and durable plastic tanks. While specific warranty details for part number A1140 are not provided here, Koyorad products typically come with manufacturer-backed warranties covering defects in materials and workmanship. For exact warranty terms, consult the product documentation or authorized distributors.

BrandKoyorad
Part NumberA1140
Core Height12.625
Core MaterialAluminum
Core Row Quantity1
Core Thickness1
Core Width25.5625
Inlet Diameter1.25
Outlet Diameter1.25
Tank MaterialPlastic
TitleKoyorad a1140 radiator
Transmission Oil Cooler Diameter1

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1997MazdaMiata1.8LL4N/A
1996MazdaMiata1.8LL4N/A
1995MazdaMiata1.8LL4N/A
1994MazdaMiata1.8LL4N/A
1993MazdaMiata1.6LL4N/A
1992MazdaMiata1.6LL4N/A
1991MazdaMiata1.6LL4N/A
1990MazdaMiata1.6LL4N/A

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