Heating and Cooling› Radiators

CSF

3902 Cross Flow Aluminum Radiator

$156.49

SKU: CSF3902

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 CSF 3902 Radiator is engineered for reliable cooling performance in select Lexus and Toyota vehicles. Designed with a cross flow aluminum core and plastic tanks, this radiator supports efficient heat dissipation.

This radiator features a 5/8 inch thick aluminum core measuring 27 9/16 inches in length and 17 5/16 inches in width. It utilizes a cross flow configuration with 1 1/2 inch inlet and outlet diameters. The cap is not included with this single-row radiator.
Show original supplier description
The CSF 3902 Radiator is designed as a direct, bolt-on OE replacement for select Lexus and Toyota models, ensuring reliable cooling performance without the need for modifications. Key specifications include a 5/8-inch core thickness, a core measuring 27 9/16 inches in length by 17 5/16 inches in width, and inlet/outlet diameters of 1 1/2 inches, positioned on the left and right respectively. This is a single-row radiator, and a cap is not included, so the original or a compatible replacement cap must be used. It is crafted with OEM-style plastic tanks and aluminum cores to meet or exceed factory standards, undergoing rigorous testing for durability and performance. Installation requires ensuring the inlet and outlet hose connections match the 1 1/2 inch diameter and correct positioning (inlet left, outlet right). It is crucial to verify the radiator core dimensions fit within the engine bay without interference and to properly bleed the cooling system after installation to prevent air pockets.

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

BrandCSF
Part NumberCSF3902
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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