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The Mishimoto Part Number misMMTS-350Z-03L racing thermostat is engineered to optimize your vehicle's cooling system, specifically designed for models such as the Nissan 350Z and Infiniti G35 from 2003 to 2007. This high-performance thermostat activates at a lower temperature of approximately 155°F (68°C), enabling coolant to flow through your engine sooner during warm-up. As a result, it helps maintain cooler engine temperatures and improves overall thermal management, especially beneficial for modified or turbocharged applications where high engine temperatures are common. Installing this racing thermostat can significantly reduce the risk of overheating, improve engine efficiency, and potentially extend the lifespan of engine components by providing a more consistent and controlled operating temperature.
The Mishimoto racing thermostat's design ensures that your engine reaches optimal operating temperatures quickly and stays cooler during demanding driving conditions. It is compatible with a wide range of vehicles, including the 2003-2007 Infiniti G35, Nissan 350Z, and other models like the Nissan Frontier, Pathfinder, Xterra, and Suzuki Equator equipped with 4.0L engines. The thermostat’s activation point at a lower temperature than standard units makes it an excellent upgrade for performance enthusiasts looking to improve cooling performance without sacrificing reliability. Crafted with precision and high-quality materials, this thermostat is a straightforward replacement that enhances your vehicle's thermal regulation, ensuring better engine response and longevity. Whether you're racing, towing, or simply seeking better engine temperature control, the Mishimoto racing thermostat offers a reliable solution tailored for your performance needs.
Features:
Fitment:
2001 Infiniti QX4 Base
2001 Nissan Pathfinder LE
2001 Nissan Pathfinder SE
2001 Nissan Pathfinder XE
2002 Infiniti Q45 Base
2002 Infiniti QX4 Base
2002 Nissan Pathfinder LE
2002 Nissan Pathfinder SE
2003 Infiniti FX35 Base
2003 Infiniti G35 Base
2003 Infiniti QX4 Base
2003 Nissan 350Z Base
2003 Nissan 350Z Enthusiast
2003 Nissan 350Z Performance
2003 Nissan 350Z Touring
2003 Nissan 350Z Track
2003 Nissan Pathfinder LE
2003 Nissan Pathfinder SE
2004 Infiniti FX35 Base
2004 Infiniti G35 Base
2004 Infiniti G35 X
2004 Nissan 350Z Base
2004 Nissan 350Z Enthusiast
2004 Nissan 350Z Performance
2004 Nissan 350Z Touring
2004 Nissan 350Z Track
2004 Nissan Pathfinder LE
2004 Nissan Pathfinder SE
2005 Infiniti FX35 Base
2005 Infiniti G35 Base
2005 Infiniti G35 X
2005 Nissan 350Z 35th Anniversary Edition
2005 Nissan 350Z Base
2005 Nissan 350Z Enthusiast
2005 Nissan 350Z Grand Touring
2005 Nissan 350Z Performance
2005 Nissan 350Z Touring
2005 Nissan 350Z Track
2005 Nissan Frontier LE
2005 Nissan Frontier Nismo Off-Road
2005 Nissan Frontier SE
2005 Nissan Frontier XE
2005 Nissan Pathfinder LE
2005 Nissan Pathfinder SE
2005 Nissan Pathfinder SE Off-Road
2005 Nissan Pathfinder XE
2005 Nissan Xterra Off-Road
2005 Nissan Xterra S
2005 Nissan Xterra SE
2006 Infiniti FX35 Base
2006 Infiniti G35 Base
2006 Infiniti G35 X
2006 Infiniti M35 Base
2006 Infiniti M35 Sport
2006 Infiniti M35 X
2006 Nissan 350Z Base
2006 Nissan 350Z Enthusiast
2006 Nissan 350Z Grand Touring
2006 Nissan 350Z Touring
2006 Nissan 350Z Track
2006 Nissan Frontier LE
2006 Nissan Frontier Nismo Off-Road
2006 Nissan Frontier SE
2006 Nissan Frontier XE
2006 Nissan Pathfinder LE
2006 Nissan Pathfinder S
2006 Nissan Pathfinder SE
2006 Nissan Pathfinder SE Off-Road
2006 Nissan Xterra Off-Road
2006 Nissan Xterra S
2006 Nissan Xterra SE
2006 Nissan Xterra X
2007 Infiniti FX35 Base
2007 Infiniti G35 Base
2007 Infiniti G35 Journey
2007 Infiniti G35 Sport
2007 Infiniti G35 X
2007 Infiniti M35 Base
2007 Infiniti M35 Sport
2007 Infiniti M35 X
2007 Nissan Frontier LE
2007 Nissan Frontier Nismo Off-Road
2007 Nissan Frontier SE
2007 Nissan Frontier XE
2007 Nissan Pathfinder LE
2007 Nissan Pathfinder S
2007 Nissan Pathfinder SE
2007 Nissan Pathfinder SE Off-Road
2007 Nissan Xterra Off-Road
2007 Nissan Xterra S
2007 Nissan Xterra SE
2007 Nissan Xterra X
2008 Infiniti FX35 Base
2008 Infiniti M35 Base
2008 Infiniti M35 X
2008 Nissan Frontier LE
2008 Nissan Frontier Nismo Off-Road
2008 Nissan Frontier SE
2008 Nissan Frontier XE
2008 Nissan Pathfinder LE
2008 Nissan Pathfinder S
2008 Nissan Pathfinder SE
2008 Nissan Pathfinder SE Off-Road
2008 Nissan Xterra Off-Road
2008 Nissan Xterra S
2008 Nissan Xterra SE
2008 Nissan Xterra X
2009 Nissan Frontier LE
2009 Nissan Frontier PRO-4X
2009 Nissan Frontier SE
2009 Nissan Frontier XE
2009 Nissan Pathfinder LE
2009 Nissan Pathfinder S
2009 Nissan Pathfinder SE
2009 Nissan Pathfinder SE Off-Road
2009 Nissan Xterra Off-Road
2009 Nissan Xterra S
2009 Nissan Xterra SE
2009 Nissan Xterra X
2009 Suzuki Equator Base
2009 Suzuki Equator Premium
2009 Suzuki Equator RMZ-4
2009 Suzuki Equator Sport
2010 Nissan Frontier LE
2010 Nissan Frontier PRO-4X
2010 Nissan Frontier SE
2010 Nissan Frontier XE
2010 Nissan Pathfinder LE
2010 Nissan Pathfinder S
2010 Nissan Pathfinder SE
2010 Nissan Xterra Off-Road
2010 Nissan Xterra S
2010 Nissan Xterra SE
2010 Nissan Xterra X
2010 Suzuki Equator Base
2010 Suzuki Equator Premium
2010 Suzuki Equator RMZ-4
2010 Suzuki Equator Sport
2011 Nissan Frontier PRO-4X
2011 Nissan Frontier S
2011 Nissan Frontier SL
2011 Nissan Frontier SV
2011 Nissan Pathfinder LE
2011 Nissan Pathfinder S
2011 Nissan Pathfinder Silver Edition
2011 Nissan Pathfinder SV
2011 Nissan Xterra PRO-4X
2011 Nissan Xterra S
2011 Nissan Xterra X
2011 Suzuki Equator Base
2011 Suzuki Equator Premium
2011 Suzuki Equator RMZ-4
2011 Suzuki Equator Sport
2012 Nissan Frontier PRO-4X
2012 Nissan Frontier S
2012 Nissan Frontier SL
2012 Nissan Frontier SV
2012 Nissan Pathfinder LE
2012 Nissan Pathfinder S
2012 Nissan Pathfinder Silver Edition
2012 Nissan Pathfinder SV
2012 Nissan Xterra PRO-4X
2012 Nissan Xterra S
2012 Nissan Xterra X
2012 Suzuki Equator Base
2012 Suzuki Equator Premium
2012 Suzuki Equator RMZ-4
2012 Suzuki Equator Sport
2013 Nissan Frontier Desert Runner
2013 Nissan Frontier PRO-4X
2013 Nissan Frontier S
2013 Nissan Frontier SL
2013 Nissan Frontier SV
2013 Nissan Xterra PRO-4X
2013 Nissan Xterra S
2013 Nissan Xterra X
2014 Nissan Frontier Desert Runner
2014 Nissan Frontier PRO-4X
2014 Nissan Frontier S
2014 Nissan Frontier SL
2014 Nissan Frontier SV
2014 Nissan Xterra PRO-4X
2014 Nissan Xterra S
2014 Nissan Xterra X
2015 Nissan Frontier Desert Runner
2015 Nissan Frontier PRO-4X
2015 Nissan Frontier S
2015 Nissan Frontier SL
2015 Nissan Frontier SV
2015 Nissan Xterra PRO-4X
2015 Nissan Xterra S
2015 Nissan Xterra X
2016 Nissan Frontier Desert Runner
2016 Nissan Frontier PRO-4X
2016 Nissan Frontier S
2016 Nissan Frontier SL
2016 Nissan Frontier SV
2017 Nissan Frontier Desert Runner
2017 Nissan Frontier PRO-4X
2017 Nissan Frontier S
2017 Nissan Frontier SL
2017 Nissan Frontier SV
2018 Nissan Frontier Desert Runner
2018 Nissan Frontier PRO-4X
2018 Nissan Frontier S
2018 Nissan Frontier SL
2018 Nissan Frontier SV
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).
