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๐ฅ Stay cool, drive smarter with Densoโs precision radiator!
The Denso 221-3409 Radiator is a vehicle-specific cooling system accessory designed to enhance engine performance and throttle response while improving fuel efficiency. Measuring 78.74 x 12.7 x 77.47 cm and weighing 18.65 pounds, it offers a perfect fit and reliable durability. With a strong customer rating and manufacturer warranty, itโs a trusted upgrade for maintaining optimal engine temperature and preventing common issues like transmission cooler leaks.

| ASIN | B004J317JC |
| Brand Name | Denso |
| Colour | natural |
| Customer Reviews | 4.6 4.6 out of 5 stars (245) |
| Global Trade Identification Number | 00042511178786 |
| Included Components | RADIATOR |
| Item Type Name | ACCESSORIES |
| Item Weight | 1 Pounds |
| Manufacturer | Denso |
| Manufacturer Part Number | 221-3409 |
| Manufacturer Warranty Description | Denso honors the manufacturer's warranties for the products purchased from Denso. |
| Model Number | 221-3409 |
| UPC | 042511178786 |
J**T
Perfect fit and function. Replacing the original radiator with this one relieved my worries of the transmission cooler leaking and causing the transmission fluid to mix with radiator antifreeze. (A common problem with Frontier trucks.)
S**I
Starting leaking 3 months after professional installation and needs to be replaced ,no warranty or product support available .
S**E
Unfortunately this arrived defective - out of square as if the center had been pushed slightly sideways. there was no visible damage to the box but, as others have noted, the packaging was, shall we say, light on protection. First inspection of the radiator appeared ok on arrival but when installing the mounts it became clear that it was crooked. Down a bunch of hours labour and a full system worth of coolant. Extremely frustrating ... Refund has been easy as with most things on AMAZON but the lost time and dollars have taught me a lesson about fragile autoparts from this source.
V**P
After a few weeks and few hundred miles the Denso radiator performs well. It is installed in a 2007 Nissan Xterra. The original radiator made by Calsonic started leaking coolant after 45k miles. Although the original "Radiator assembly" is under extended warranty from Nissan, the Nissan dealer refused to honor the warranty. According to the terms "internal leaking" must occur first then they will (probably) do it. Internal leaking means your coolant will mix with transmission fluid and your transmission will go bust! How smart! Dealers offered to replace the radiator for $1000. I did it at home for $100 in a few hours. The Denso radiator is a perfect fit, and is perfectly identical with the OEM Calsonic which is sort of scary.
A**R
Solid construction. Fits perfectly in my 2008 Pathfinder. Some difficulty with installation. Watching several utube videos on installation helped with the process.
Trustpilot
1 day ago
3 weeks ago