Heating and Cooling› Radiators

Koyorad

Aluminum Radiator, VQ35DE Manual Transmission

$329.00

SKU: R2577

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 R2577 is a high-performance aluminum racing radiator designed for the 2003-2006 Nissan 350Z with a VQ35DE engine and manual transmission. It features a two-row, 1.89-inch thick "Hyper Core" with a high-density design that increases cooling capacity over the OEM radiator. The construction includes Nocolok™ brazing and precision TIG welds for durability.
Show original supplier description
The Koyorad R2577 is a high-performance, all-aluminum radiator engineered to replace the stock unit in the Nissan 350Z models from 2003-2006. Featuring a 53mm core size, this radiator is specifically designed for vehicles equipped with the VQ35DE engine and a manual transmission. It provides a significant increase in cooling capacity, estimated at 20% to 30% more than standard radiators, ensuring optimal engine temperature management during demanding driving conditions. Constructed from lightweight aluminum, this radiator is built for durability and efficient heat dissipation. However, it is important to note that this radiator does not fit convertible models of the Nissan 350Z. For automatic transmission vehicles, an additional transmission cooler would be necessary. This radiator is a former part number and may be discontinued by the manufacturer. Buyers should be aware of potential Prop 65 Hazardous Material warnings associated with some products, as indicated by the manufacturer.

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 NumberR2577
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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