







❄️ Keep your Civic Si cool, calm, and track-ready—because overheating is so last season.
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 1.57-inch thick two-row brazed aluminum core, it delivers superior cooling efficiency for both street driving and track use. Its all-aluminum construction includes a magnetic drain plug for easy maintenance and durability, all backed by Mishimoto’s lifetime warranty. With precise dimensions ensuring a perfect fit, this radiator is a reliable upgrade to keep your engine running cooler and longer.




















| ASIN | B003GZE1G0 |
| Best Sellers Rank | #90,249 in Automotive ( See Top 100 in Automotive ) #51 in Car Radiators |
| Brand | Mishimoto |
| Customer Reviews | 4.5 4.5 out of 5 stars (29) |
| Date First Available | 1 January 2024 |
| Item Weight | 2.27 Kilograms |
| Item model number | MMRAD-CIV-06SI |
| Manufacturer | Mishimoto |
| Manufacturer Part Number | MMRADCIV06SI |
| Model | MMRAD-CIV-06SI |
| OEM Part Number | MMRADCIV06SI |
| Product Dimensions | 77.47 x 17.78 x 54.61 cm; 2.27 kg |
M**R
Bond paad
strong and strong
S**E
Nice addition to my car keeps cool.
J**K
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
M**.
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!
S**N
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
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
Trustpilot
1 month ago
1 month ago