Mishimoto Thermoswitch Fan Switch Civic Si (2006-2013) Nissan GrimmSpeed has spent countless hours

GrimmSpeed has spent countless hours understanding the BRZ/FR-S chassis

The HKS R-Type Gen Coupe kit is a direct bolt on and can be used with the stock turbo or aftermarket turbo setups

The black powder-coated heatshield will a pleasing focal point of your engine bay as soon as you pop the hood

- Eliminates excessive steering play

making for an even zippier Fiesta experience

Mishimoto Thermoswitch Fan Switch Civic Si (2006-2013) Nissan GrimmSpeed has spent countless hoursThe Mishimoto Thermoswitch Fan Switch replaces your OEM Civic Si fan switch, allowing your radiator fan to activate at 80C 176F degrees, 15C 59F degrees lower than stock temperature. This will help prevent heat soak and prolong the life of all the components in your engine bay. Installation is simple with direct replacement to OEM switch. FITMENT: Honda Civic Si 2006 2012