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Heating and Cooling› Oil and Fluid Coolers

KoyoRad

Radiator with Integrated Transmission Oil Cooler

$191.75 $139.97 Save $51.78

SKU: A2780

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Koyorad A2780 radiator is a direct replacement cooling solution for the Infiniti M35. It features an aluminum core with plastic tanks for efficient heat dissipation and corrosion resistance. This radiator includes an integrated transmission oil cooler to help manage transmission fluid temperatures.
Show original supplier description
The Koyorad A2780 radiator is engineered as an OE direct replacement for the Infiniti M35, ensuring a bolt-on fit with no modifications required. The core measures 17.6875 inches in height, 29.5 inches in width, and 0.625 inches thick, optimizing airflow and heat exchange. This radiator is equipped with an internal transmission oil cooler, featuring a 1.0625-inch diameter, which is crucial for maintaining transmission performance and longevity by managing fluid temperatures. The inlet and outlet diameters are both 1.375 inches, facilitating proper coolant flow. When installing, it's important to ensure all hose connections match these specifications and to properly bleed the cooling system afterward to prevent air pockets. Koyorad radiators are manufactured to meet OEM specifications for fit and function, aiming for a balance of durability and performance. While specific warranty details are not provided, Koyorad products are generally subject to rigorous quality control. This radiator is compatible with 2006-2008 Infiniti M35 models.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandKoyoRad
Part NumberA2780
CategoryHeating and Cooling
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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