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❄️ Keep your Civic Si cool, calm, and track-ready—upgrade like a pro!
The Mishimoto MMRAD-CIV-06SI is a high-performance aluminum radiator engineered specifically for 2006-2011 Honda Civic Si models with K-series engines. Featuring a two-row, 1.57-inch thick brazed aluminum core and all-aluminum construction with a magnetic drain plug, it delivers superior cooling efficiency and durability. Compact in size yet powerful in function, this radiator ensures optimal engine temperature regulation on both street and track, backed by a lifetime warranty for lasting peace of mind.











| ASIN | B003GZE1G0 |
| Best Sellers Rank | #2,063,532 in Automotive ( See Top 100 in Automotive ) #10,437 in Automotive Replacement Engine Radiators |
| Brand | Mishimoto |
| Brand Name | Mishimoto |
| Cooler Heatsink Compatibility | 2006-2011 Honda Civic Si (K-series engine) |
| Cooler Heatsink Material | Aluminum |
| Customer Reviews | 4.6 out of 5 stars 33 Reviews |
| Global Trade Identification Number | 00748354798890, 07483547988902 |
| Included Components | Per Item Description |
| Item Dimensions L x W x H | 26.8"L x 18.2"W x 2.07"H |
| Item Weight | 5 pounds |
| Manufacturer | Mishimoto |
| Model | MMRAD-CIV-06SI |
| Number of Items | 1 |
| Part Interchange Info | MMRADCIV06SI |
| Part Number | MMRADCIV06SI |
| Product Dimensions | 26.8"L x 18.2"W x 2.07"H |
| UPC | 748354798890 |
| Unit Count | 1 Count |
| Warranty Description | Lifetime |
S**E
Very nice
Nice addition to my car keeps cool.
S**N
Compatible with 2009-2011 civic ex.
Compatible with 2009-2011 civic ex civic ex_l civic dx civic si civic MX This radiator is very excellent . my car civic 4 Door EX-L (NAVIGATION) It is really convenient .
E**3
not only it looks good under the hood but it also keeps my car ...
vroom vroom....not only it looks good under the hood but it also keeps my car running cooler than ever now that it is under boost
M**.
Good quality!
Once my mechanic replaced the radiator, and I drove the car, I felt more power for sure. The quality was very good, and I won't have to worry about my cars cooling system. Worth the money!
J**U
love it
i needed a new radiator and the fact that this full aluminum radiator only costs 20 dollars more than the cheap plastic oem one is a plus.
J**Y
Five Stars
Perfect fit! And easy install no complaints at all
B**O
Five Stars
Great fitment
J**S
Mishimoto is the law
Perfect fit for my 2006 Honda Civic Si Coupe
M**R
Bond paad
strong and strong
J**K
Box open
Produit est excellent très bonne qualité Mais le shipping jer trouver ça plate un px Recevoir mon achat déjà ouvert sans papier rien alors que j’attendais avec impatience le petit 🐧 sent Bon 😭 Je sais pas si un collant vien avec aussi Mais jamais eux signe de vie de ca part
Trustpilot
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