Heating and Cooling› Radiators

CSF OEM

OEM Radiator

$328.99

SKU: CSF2991

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The CSF 2991 is an OEM plastic radiator designed for the 2003-2008 Mazda 6 with a 2.3L engine. This radiator is built to OE specifications for a direct fit. It features specific inlet and outlet sizes of 1.250 inches.
Show original supplier description
The CSF 2991 is an OEM plastic radiator specifically engineered for the 2003-2008 Mazda 6 equipped with the 2.3L engine. Designed as a direct replacement, it ensures a straightforward installation process by matching original equipment specifications. This radiator features a core height of 14.88 inches and a core thickness of 0.69 inches, with both the inlet and outlet ports measuring 1.250 inches. CSF emphasizes rigorous testing, with each unit undergoing a 150% operating pressure leak test before leaving the factory, and all components are installed, torqued, and tested during assembly. While this is an OEM-style replacement, it's important to note that this item may be special ordered and could have cancellation or return restrictions. Please refer to the seller's terms and conditions for more information. The product is currently listed as out of stock.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCSF OEM
Part NumberCSF2991
CategoryHeating and Cooling

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy