Heating and Cooling› Radiators

Koyo

All-Aluminum Radiator

$533.40

SKU: KOYKH062306

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

This radiator features all-aluminum construction, offering a more robust alternative to factory radiators that often utilize plastic tanks prone to expansion and leaks under heat. The all-aluminum build allows for future welding and repairs, potentially making it a long-lasting cooling solution.
Show original supplier description
The Koyo Aluminum Racing Radiator is engineered for enhanced cooling performance and superior durability, specifically designed as a replacement for the OEM radiator in the 2010-2013 Mazdaspeed3. Unlike stock radiators that commonly feature plastic upper and lower tanks susceptible to heat-induced expansion and eventual leaks, this Koyo unit boasts an all-aluminum construction. This not only boosts cooling efficiency but also provides increased resilience against the rigors of demanding driving conditions. The all-aluminum design offers the added benefit of being weldable and repairable, ensuring a longer service life and potentially eliminating the need for future replacements. This racing radiator is heli-arc welded for reinforced aluminum connections and features a thicker core for improved heat dissipation. Precise tube and fin alignment promotes optimal coolant flow and efficient heat transfer. The radiator utilizes a state-of-the-art No Clock furnace for bonding all components, which helps resist damage from vibration, road debris, and environmental factors. A precision-machined billet filler neck adds to its durability. Specifications for this radiator include a core depth of 1.00 inch, a core height of 14.48 inches, and a core width of 26.378 inches. The core end tank material is aluminum, and it does not include a radiator cap.

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

BrandKoyo
Part NumberKOYKH062306
CategoryHeating and Cooling
5,000+ Trusted brands
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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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