Mishimoto racing thermostat for the 2003-2006 Mercedes-Benz AMG M113 5.4L supercharged engine (E55, C55, S55, CLS55, SL55, G55 AMG). It opens at 180°F, lower than the stock 188.6°F, so coolant flows earlier to reduce and maintain cooler engine temperatures on street or track. Direct-fit replacement, backed by the Mishimoto Lifetime Warranty.
Specifications
| Type | Racing thermostat |
| Activation Temp | 180°F (vs stock 188.6°F) |
| Engine | AMG M113 5.4L supercharged |
| Activation Temperature | 180 °F |
| OEM Activation Temperature | 188.6 °F |
| Chassis Codes | W211 W215 W219 W221 W463 R230 |
| Fitment Notes | The installation of this thermostat requires the use of the Mercedes Benz 1132030275 housing. The stock thermostat must be removed and the Mishimoto thermostat installed in its place. |
| Part Number | MMTS-MB55-03L |
| Warranty | Lifetime |
| Application | 2003-2006 Mercedes AMG 55 (see fitment) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005-2006 | Mercedes-Benz | C55 AMG | Base |
| 2006 | Mercedes-Benz | CLS55 AMG | Base |
| 2003-2006 | Mercedes-Benz | E55 AMG | Base |
| 2005-2011 | Mercedes-Benz | G55 AMG | Base |
| 2004-2006 | Mercedes-Benz | S55 AMG | Base |
| 2003 | Mercedes-Benz | S55 AMG | Kompressor |
| 2004-2008 | Mercedes-Benz | SL55 AMG | Base |
| 2003 | Mercedes-Benz | SL55 AMG | Kompressor |
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
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