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Upgrade your Mercedes Benz E55 AMG with the Mishimoto Part Number misMMTS-MB55-03L racing thermostat, designed to improve cooling efficiency for your high-performance engine. This thermostat is a direct replacement for the stock unit and is engineered to open at a lower temperature, approximately 180°F compared to the standard 188.6°F, allowing coolant to circulate earlier in the engine's warm-up cycle. This proactive coolant flow helps maintain lower engine temperatures, which is particularly beneficial during spirited driving or track use, ultimately enhancing engine longevity and performance. Constructed with quality materials, the Mishimoto racing thermostat ensures durability and reliable operation under demanding conditions. It is compatible with a variety of Mercedes-Benz models, including the 2003-2006 E55 AMG, G55 AMG, and other models equipped with the 5.5-liter 722.6 transmission, making it a versatile upgrade for enthusiasts seeking to optimize their vehicle's cooling system. Backed by Mishimoto's signature lifetime warranty, this thermostat offers peace of mind alongside performance improvements. Whether you’re looking to upgrade your street vehicle or prepare for track days, this racing thermostat is a strategic addition to your vehicle's cooling system, providing consistent temperature control and supporting enhanced engine performance over time.
Features:
Fitment:
2003 Mercedes-Benz E55 AMG Base
2003 Mercedes-Benz S55 AMG Kompressor
2003 Mercedes-Benz SL55 AMG Kompressor
2004 Mercedes-Benz E55 AMG Base
2004 Mercedes-Benz S55 AMG Base
2004 Mercedes-Benz SL55 AMG Base
2005 Mercedes-Benz C55 AMG Base
2005 Mercedes-Benz E55 AMG Base
2005 Mercedes-Benz G55 AMG Base
2005 Mercedes-Benz S55 AMG Base
2005 Mercedes-Benz SL55 AMG Base
2006 Mercedes-Benz C55 AMG Base
2006 Mercedes-Benz CLS55 AMG Base
2006 Mercedes-Benz E55 AMG Base
2006 Mercedes-Benz G55 AMG Base
2006 Mercedes-Benz S55 AMG Base
2006 Mercedes-Benz SL55 AMG Base
2007 Mercedes-Benz G55 AMG Base
2007 Mercedes-Benz SL55 AMG Base
2008 Mercedes-Benz G55 AMG Base
2008 Mercedes-Benz SL55 AMG Base
2009 Mercedes-Benz G55 AMG Base
2010 Mercedes-Benz G55 AMG Base
2011 Mercedes-Benz G55 AMG Base
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
