Mishimoto racing thermostat for the 2006-2013 Honda Civic Si (and related Honda/Acura K-series applications). Opening at 68°C / 155°F (lower than stock), it lets coolant flow through the engine sooner to reduce and maintain cooler temperatures. Direct-fit replacement, backed by the Mishimoto Lifetime Warranty.
| Type | Racing thermostat |
| Activation Temp | 68°C / 155°F |
| Engine | Honda K-series |
| Part Number | MMTS-CIV-06 |
| Warranty | Lifetime |
| Application | 2006-2013 Honda Civic Si (see fitment) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2008 | Acura | RDX | Base |
| 2004-2008 | Acura | TSX | Base |
| 2006-2013 | Honda | Civic | Si |
| 2006-2013 | Honda | Civic | EX |
| 2006-2013 | Honda | Civic | LX |
| 2007-2013 | Honda | CR-V | EX / EX-L / LX |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
