Description
The Mishimoto MMFS-CIV-06SI is a purpose-built aluminum fan shroud kit engineered specifically for the Honda Civic Si, pairing a polished aluminum shroud with two 12-inch electric fans that each move air at over 1150 CFM. Unlike a stock shroud, this Mishimoto assembly is built lighter while delivering more airflow directly to the radiator core, giving Civic Si owners a straightforward way to upgrade their engine cooling system.
Keeping coolant temperatures in check is critical for engine longevity, especially under hard driving or in hot weather, and this Mishimoto cooling upgrade addresses that need head-on. By pulling more air through the Civic Si’s aluminum radiator, the shroud helps expel excess heat more efficiently than a factory setup, while its housing also protects the fan blades from contact with other engine bay components. The kit is compatible with both OEM and Mishimoto radiators, so it slots into an existing cooling system without forcing a full radiator swap, and it ships with all mounting hardware needed to get it installed.
Vehicle Applications
This fan shroud kit is a direct fit for the 2006-2011 Honda Civic Si, covering chassis codes FG1, FG2, FA1, and FA5 equipped with the K20Z3 engine. It also fits the 2008 Honda Civic Si Mugen Edition, giving both standard Civic Si trims and the limited Mugen variant access to the same performance cooling upgrade.
Features
- Direct fit for the 2006-2011 Honda Civic Si
- Also fits the 2008 Honda Civic Si Mugen Edition
- Compatible with both stock and Mishimoto radiators
- Maximizes airflow to the radiator core
- Includes two 12-inch slim electric fans, each rated over 1150 CFM
- Fans feature 10 plastic, straight-style black blades
- Plug-in electrical fans; no separate controller included
- Polished aluminum shroud housing and finish
- Includes all necessary mounting hardware
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMFS-CIV-06SI
- Grade Type: Performance
- Shroud Material: Aluminum
- Shroud Color: Silver
- Width: 3.5 in
- Height: 17.13 in
- Length: 28.38 in
- Fan Quantity: 2
- Fan Diameter: 12 in each
- Blade Quantity: 10 per fan
- Blade Material: Plastic
- Blade Type: Straight
- Blade Color: Black
- Maximum Airflow: Over 1150 CFM per fan
- Motor Included: Yes
- Hardwired or Plug-In: Plug-In
- Electrical or Mechanical: Electrical
- Control Module Included: No
- Chassis Codes: FG1, FG2, FA1, FA5
- Engine Code: K20Z3
- Kit Includes: (1) Aluminum Fan Shroud, (2) 12-inch Slim Electric Fans, Mishimoto Lifetime Warranty
Frequently Asked Questions
What vehicles does the Mishimoto MMFS-CIV-06SI fan shroud kit fit?
It’s a direct fit for the 2006-2011 Honda Civic Si (chassis codes FG1, FG2, FA1, FA5 with the K20Z3 engine) and the 2008 Honda Civic Si Mugen Edition.
Will this shroud work with my stock radiator?
Yes, this Mishimoto fan shroud kit is compatible with both OEM and Mishimoto radiators.
How many fans come with the kit and what is their airflow rating?
The kit includes two 12-inch slim electric fans, each rated at over 1150 CFM.
Does the kit include mounting hardware?
Yes, all mounting hardware needed for installation is included.
Is a fan controller included?
No, this kit does not include a control module; the fans are plug-in electrical.
What warranty comes with this Mishimoto fan shroud kit?
It is backed by the Mishimoto Lifetime Warranty.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

















