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Upgrade your vehicle's cooling system with the Mishimoto Chevrolet/GMC LSX Racing Thermostat, designed to enhance engine cooling efficiency and prevent overheating during high-performance driving. This thermostat is engineered to open at a lower temperature of 160°F, compared to standard thermostats which typically open at around 186°F, allowing coolant to circulate earlier and maintain cooler engine operating temperatures. This feature is particularly beneficial for vehicles with increased power output, whether naturally aspirated or forced induction, as it helps manage the additional heat generated during aggressive driving or track use.
The Mishimoto LSX Racing Thermostat fits a wide range of Chevrolet and GMC models, including Corvettes from 1997 to 2008, and various GM trucks and SUVs such as the Chevrolet Suburban, Avalanche, and GMC Yukon XL from 2006. Installation is straightforward, and the thermostat is built to withstand demanding conditions, ensuring long-term reliability. As with all Mishimoto products, this thermostat includes a lifetime warranty, providing peace of mind and quality assurance.
Constructed from durable materials, this racing thermostat features a precise opening mechanism that activates at the lower temperature threshold, promoting better cooling performance and reducing thermal stress on engine components. Its design ensures coolant flows through the system earlier in the warm-up process, leading to cooler engine temperatures during operation, which can improve power, efficiency, and engine longevity. Whether you daily drive a Camaro or take your GTO to the strip, this upgrade is a strategic choice for optimal thermal management and enhanced vehicle performance.
Features:
Fitment:
2003 Chevrolet Silverado 1500 SS
2003 Chevrolet SSR Base
2003 Chevrolet Trailblazer EXT LS
2003 Chevrolet Trailblazer EXT LT
2003 Chevrolet Trailblazer EXT North Face
2003 GMC Envoy XL SLE
2003 GMC Envoy XL SLT
2004 Buick Rainier CXL
2004 Buick Rainier CXL Plus
2004 Cadillac CTS V
2004 Cadillac Escalade Base
2004 Cadillac Escalade ESV Base
2004 Cadillac Escalade EXT Base
2004 Chevrolet Avalanche 1500 Base
2004 Chevrolet Avalanche 1500 Z66
2004 Chevrolet Avalanche 1500 Z71
2004 Chevrolet Avalanche 2500 Base
2004 Chevrolet Corvette Base
2004 Chevrolet Corvette Z06
2004 Chevrolet Express 1500 Base
2004 Chevrolet Express 1500 LS
2004 Chevrolet Express 2500 Base
2004 Chevrolet Express 2500 LS
2004 Chevrolet Express 3500 Base
2004 Chevrolet Express 3500 LS
2004 Chevrolet Silverado 1500 Base
2004 Chevrolet Silverado 1500 Hybrid
2004 Chevrolet Silverado 1500 LS
2004 Chevrolet Silverado 1500 LT
2004 Chevrolet Silverado 1500 SS
2004 Chevrolet Silverado 1500 WT
2004 Chevrolet Silverado 1500 Z71
2004 Chevrolet Silverado 2500 Base
2004 Chevrolet Silverado 2500 LS
2004 Chevrolet Silverado 2500 LT
2004 Chevrolet Silverado 2500 WT
2004 Chevrolet Silverado 2500 HD Base
2004 Chevrolet Silverado 2500 HD LS
2004 Chevrolet Silverado 2500 HD LT
2004 Chevrolet Silverado 2500 HD WT
2004 Chevrolet Silverado 3500 Base
2004 Chevrolet Silverado 3500 LS
2004 Chevrolet Silverado 3500 LT
2004 Chevrolet Silverado 3500 WT
2004 Chevrolet SSR Base
2004 Chevrolet Suburban 1500 LS
2004 Chevrolet Suburban 1500 LT
2004 Chevrolet Suburban 1500 Z71
2004 Chevrolet Suburban 2500 LS
2004 Chevrolet Suburban 2500 LT
2004 Chevrolet Tahoe LS
2004 Chevrolet Tahoe LT
2004 Chevrolet Tahoe Z71
2004 Chevrolet Trailblazer EXT LS
2004 Chevrolet Trailblazer EXT LT
2004 Chevrolet Trailblazer EXT North Face
2004 GMC Envoy XL SLE
2004 GMC Envoy XL SLT
2004 GMC Envoy XUV SLE
2004 GMC Envoy XUV SLT
2004 GMC Savana 1500 Base
2004 GMC Savana 1500 SLE
2004 GMC Savana 2500 Base
2004 GMC Savana 2500 SLE
2004 GMC Savana 3500 Base
2004 GMC Savana 3500 SLE
2004 GMC Sierra 1500 Base
2004 GMC Sierra 1500 Denali
2004 GMC Sierra 1500 SLE
2004 GMC Sierra 1500 SLT
2004 GMC Sierra 1500 WT
2004 GMC Sierra 2500 Base
2004 GMC Sierra 2500 SLE
2004 GMC Sierra 2500 SLT
2004 GMC Sierra 2500 WT
2004 GMC Sierra 2500 HD Base
2004 GMC Sierra 2500 HD SLE
2004 GMC Sierra 2500 HD SLT
2004 GMC Sierra 2500 HD WT
2004 GMC Sierra 3500 Base
2004 GMC Sierra 3500 SLE
2004 GMC Sierra 3500 SLT
2004 GMC Sierra 3500 WT
2004 GMC Yukon Denali
2004 GMC Yukon SLE
2004 GMC Yukon SLT
2004 GMC Yukon XL 1500 Denali
2004 GMC Yukon XL 1500 SLE
2004 GMC Yukon XL 1500 SLT
2004 GMC Yukon XL 2500 SLE
2004 GMC Yukon XL 2500 SLT
2004 Hummer H2 Base
2004 Pontiac GTO Base
2005 Buick Rainier CXL
2005 Buick Rainier CXL Plus
2005 Cadillac CTS V
2005 Cadillac Escalade Base
2005 Cadillac Escalade ESV Base
2005 Cadillac Escalade EXT Base
2005 Chevrolet Avalanche 1500 Base
2005 Chevrolet Avalanche 1500 LS
2005 Chevrolet Avalanche 1500 LT
2005 Chevrolet Avalanche 1500 Z66
2005 Chevrolet Avalanche 1500 Z71
2005 Chevrolet Avalanche 2500 LS
2005 Chevrolet Avalanche 2500 LT
2005 Chevrolet Corvette Base
2005 Chevrolet Express 1500 Base
2005 Chevrolet Express 1500 LS
2005 Chevrolet Express 2500 Base
2005 Chevrolet Express 2500 LS
2005 Chevrolet Express 3500 Base
2005 Chevrolet Express 3500 LS
2005 Chevrolet Silverado 1500 Base
2005 Chevrolet Silverado 1500 Hybrid
2005 Chevrolet Silverado 1500 LS
2005 Chevrolet Silverado 1500 LT
2005 Chevrolet Silverado 1500 SS
2005 Chevrolet Silverado 1500 WT
2005 Chevrolet Silverado 1500 Z71 Off-Road
2005 Chevrolet Silverado 1500 HD Base
2005 Chevrolet Silverado 1500 HD LS
2005 Chevrolet Silverado 1500 HD LT
2005 Chevrolet Silverado 2500 HD Base
2005 Chevrolet Silverado 2500 HD LS
2005 Chevrolet Silverado 2500 HD LT
2005 Chevrolet Silverado 2500 HD WT
2005 Chevrolet Silverado 3500 Base
2005 Chevrolet Silverado 3500 LS
2005 Chevrolet Silverado 3500 LT
2005 Chevrolet SSR Base
2005 Chevrolet Suburban 1500 LS
2005 Chevrolet Suburban 1500 LT
2005 Chevrolet Suburban 1500 Z71
2005 Chevrolet Suburban 2500 LS
2005 Chevrolet Suburban 2500 LT
2005 Chevrolet Tahoe LS
2005 Chevrolet Tahoe LT
2005 Chevrolet Tahoe Z71
2005 Chevrolet Trailblazer EXT LS
2005 Chevrolet Trailblazer EXT LT
2005 GMC Envoy Denali
2005 GMC Envoy XL Denali
2005 GMC Envoy XL SLE
2005 GMC Envoy XL SLT
2005 GMC Envoy XUV SLE
2005 GMC Envoy XUV SLT
2005 GMC Savana 1500 Base
2005 GMC Savana 1500 SLE
2005 GMC Savana 2500 Base
2005 GMC Savana 2500 SLE
2005 GMC Savana 3500 Base
2005 GMC Savana 3500 SLE
2005 GMC Sierra 1500 Base
2005 GMC Sierra 1500 Denali
2005 GMC Sierra 1500 Hybrid
2005 GMC Sierra 1500 SLE
2005 GMC Sierra 1500 SLT
2005 GMC Sierra 1500 WT
2005 GMC Sierra 1500 HD SLE
2005 GMC Sierra 1500 HD SLT
2005 GMC Sierra 2500 HD Base
2005 GMC Sierra 2500 HD SLE
2005 GMC Sierra 2500 HD SLT
2005 GMC Sierra 2500 HD WT
2005 GMC Sierra 3500 Base
2005 GMC Sierra 3500 SLE
2005 GMC Sierra 3500 SLT
2005 GMC Sierra 3500 WT
2005 GMC Yukon Denali
2005 GMC Yukon SLE
2005 GMC Yukon SLT
2005 GMC Yukon XL 1500 Denali
2005 GMC Yukon XL 1500 SLE
2005 GMC Yukon XL 1500 SLT
2005 GMC Yukon XL 2500 SLE
2005 GMC Yukon XL 2500 SLT
2005 Hummer H2 Base
2005 Pontiac Grand Prix GXP
2005 Pontiac GTO Base
2006 Buick Rainier CXL
2006 Cadillac CTS V
2006 Cadillac Escalade Base
2006 Cadillac Escalade ESV Base
2006 Cadillac Escalade EXT Base
2006 Chevrolet Avalanche 1500 LS
2006 Chevrolet Avalanche 1500 LT
2006 Chevrolet Avalanche 1500 Z66
2006 Chevrolet Avalanche 1500 Z71
2006 Chevrolet Avalanche 2500 LS
2006 Chevrolet Avalanche 2500 LT
2006 Chevrolet Corvette Base
2006 Chevrolet Corvette Z06
2006 Chevrolet Express 1500 Base
2006 Chevrolet Express 1500 LS
2006 Chevrolet Express 1500 LT
2006 Chevrolet Express 2500 Base
2006 Chevrolet Express 2500 LS
2006 Chevrolet Express 2500 LT
2006 Chevrolet Express 3500 Base
2006 Chevrolet Express 3500 LS
2006 Chevrolet Express 3500 LT
2006 Chevrolet Impala SS
2006 Chevrolet Monte Carlo SS
2006 Chevrolet Silverado 1500 Hybrid
2006 Chevrolet Silverado 1500 LS
2006 Chevrolet Silverado 1500 LT
2006 Chevrolet Silverado 1500 SS
2006 Chevrolet Silverado 1500 WT
2006 Chevrolet Silverado 1500 HD LT
2006 Chevrolet Silverado 2500 HD LS
2006 Chevrolet Silverado 2500 HD LT
2006 Chevrolet Silverado 2500 HD WT
2006 Chevrolet Silverado 3500 LS
2006 Chevrolet Silverado 3500 LT
2006 Chevrolet Silverado 3500 WT
2006 Chevrolet SSR Base
2006 Chevrolet Suburban 1500 Base
2006 Chevrolet Suburban 1500 LS
2006 Chevrolet Suburban 1500 LT
2006 Chevrolet Suburban 1500 LTZ
2006 Chevrolet Suburban 1500 Z71
2006 Chevrolet Suburban 2500 LS
2006 Chevrolet Suburban 2500 LT
2006 Chevrolet Tahoe Base
2006 Chevrolet Tahoe LS
2006 Chevrolet Tahoe LT
2006 Chevrolet Tahoe Z71
2006 Chevrolet Trailblazer LS
2006 Chevrolet Trailblazer LT
2006 Chevrolet Trailblazer SS
2006 Chevrolet Trailblazer EXT LS
2006 Chevrolet Trailblazer EXT LT
2006 GMC Envoy Denali
2006 GMC Envoy XL Denali
2006 GMC Savana 1500 Base
2006 GMC Savana 1500 LS
2006 GMC Savana 1500 LT
2006 GMC Savana 2500 Base
2006 GMC Savana 3500 Base
2006 GMC Savana 3500 LS
2006 GMC Savana 3500 LT
2006 GMC Sierra 1500 Denali
2006 GMC Sierra 1500 Hybrid
2006 GMC Sierra 1500 SL
2006 GMC Sierra 1500 SLE
2006 GMC Sierra 1500 SLT
2006 GMC Sierra 1500 WT
2006 GMC Sierra 1500 HD SLE
2006 GMC Sierra 1500 HD SLT
2006 GMC Sierra 2500 HD SL
2006 GMC Sierra 2500 HD SLE
2006 GMC Sierra 2500 HD SLT
2006 GMC Sierra 2500 HD WT
2006 GMC Sierra 3500 SL
2006 GMC Sierra 3500 SLE
2006 GMC Sierra 3500 SLT
2006 GMC Sierra 3500 WT
2006 GMC Yukon Denali
2006 GMC Yukon SL
2006 GMC Yukon SLE
2006 GMC Yukon SLT
2006 GMC Yukon XL 1500 Denali
2006 GMC Yukon XL 1500 SL
2006 GMC Yukon XL 1500 SLE
2006 GMC Yukon XL 1500 SLT
2006 GMC Yukon XL 2500 SLE
2006 GMC Yukon XL 2500 SLT
2006 Hummer H2 Base
2006 Pontiac Grand Prix GXP
2006 Pontiac GTO Base
2007 Cadillac CTS V
2007 Chevrolet Corvette Base
2007 Chevrolet Corvette Z06
2007 Chevrolet Express 2500 Base
2007 Chevrolet Express 2500 LS
2007 Chevrolet Express 2500 LT
2007 Chevrolet Express 3500 Base
2007 Chevrolet Express 3500 LS
2007 Chevrolet Express 3500 LT
2007 Chevrolet Impala SS
2007 Chevrolet Monte Carlo SS
2007 Chevrolet Trailblazer LS
2007 Chevrolet Trailblazer LT
2007 GMC Envoy Denali
2007 GMC Savana 2500 Base
2007 GMC Savana 2500 LS
2007 GMC Savana 2500 LT
2007 GMC Savana 3500 Base
2007 GMC Savana 3500 LS
2007 GMC Savana 3500 LT
2007 Pontiac Grand Prix GXP
2008 Buick LaCrosse Super
2008 Chevrolet Corvette 427 Limited Edition Z06
2008 Chevrolet Corvette Base
2008 Chevrolet Corvette Z06
2008 Chevrolet Impala SS
2008 Chevrolet Trailblazer Base
2008 Chevrolet Trailblazer LT
2008 GMC Envoy Denali
2008 Pontiac G8 Base
2008 Pontiac G8 GT
2008 Pontiac Grand Prix GXP
2009 Buick LaCrosse Super
2009 Chevrolet Impala SS
2009 GMC Envoy Denali
2009 Pontiac G8 Base
2009 Pontiac G8 GT
2009 Pontiac G8 GXP
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).
