Mishimoto 180°F Racing Thermostat - Mercedes C63/CLS63/E63 AMG 6.3L (M156)

Mishimoto racing thermostat for the Mercedes-Benz 6.3L M156 V8 (C63, CLK63, CLS63, E63, ML63, R63, S63, SL63 and SLS AMG). It activates at 180°F — versus the 212°F stock unit — letting coolant flow through the engine earlier to maintain lower temperatures. Direct-fit replacement, backed by the Mishimoto Lifetime Warranty.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• 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-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy