Mishimoto MMTS-ECL-95TL Racing Thermostat for 1995-1999 Mitsubishi Eclipse Turbo

Vehicle Fitment

• 1995-1999 Mitsubishi Eclipse (GS-T, GSX, 2G DSM, 2.0L 4G63T Turbo)
• 1995-1999 Mitsubishi Eclipse (GS, RS, 2.0L 4G63 / 2.4L 4G64, FWD)
• 1995-1999 Mitsubishi Eclipse Spyder (GS-T, GS, 2.0L 4G63T / 2.4L 4G64)
• 1993-2009 Mitsubishi Galant (ES, LS, DE, Sport, 2.0L 4G63 / 2.4L 4G64 / 3.0L 6G72)
• 1993-1995 Mitsubishi Expo (2.4L 4G64)
• 2006-2010 Mitsubishi Eclipse (GS, SE, GT, 2.4L 4G69)
• 2002-2007 Mitsubishi Lancer (ES, LS, OZ Rally, SE, 2.0L 4G63 / 4G94)
• 2001-2007 Mitsubishi Evolution VII / VIII / IX (RS, GSR, MR, 2.0L 4G63T)
• 1993-2002 Mitsubishi Mirage (S, ES, LS, DE, 1.5L 4G15 / 1.8L 4G93)
• 1997-1999 Mitsubishi Montero Sport (ES, LS, XLS, Limited, 3.0L 6G72)
• 2004-2006 Mitsubishi Outlander (LS, XLS, Limited, SE, 2.4L 4G69)
• 1993-1996 Eagle Summit (1.8L 4G93 / 2.4L 4G64)
• 1997-1998 Eagle Talon (TSi, 2.0L 4G63T Turbo)
• 1994 Dodge Colt (1.8L 4G93)
• 1993-1994 Plymouth Colt (Base, GL, Vista, Vista SE, 1.8L 4G93)

Fitment Notes

• Fits both naturally aspirated and turbocharged engine variants where applicable; verify engine code before ordering.
• 2006-2010 Mitsubishi Eclipse GT (3.8L 6G75 V6) - fitment not confirmed; this thermostat is designed for 4G-series engines only.
• Mitsubishi Lancer Evolution X (2008-2015, 4B11T) - does not fit; different thermostat housing design.
• Compatible with OEM thermostat housing; no housing replacement required.
• Replaces OEM part number MD315301.

Features

• Lower activation temperature of 155°F (68°C) versus OEM activation at 176°F (80°C) - coolant circulates sooner for quicker temperature control.
• Designed specifically for modified and upgraded turbo applications where heat management is critical.
• Direct-fit OEM replacement - installs into the stock thermostat housing with no modifications required.
• Promotes greater cooling efficiency throughout the entire engine cooling circuit.
• Reduces and maintains cooler operating temperatures during extended high-performance driving.
• Helps prevent heat soak and reduces thermal stress on engine internals, gaskets, and turbo components.
• Compatible with both stock and upgraded cooling systems, including aftermarket radiators and intercoolers.
• Backed by Mishimoto's industry-leading Lifetime Warranty for complete peace of mind.
• Engineered and quality-tested in-house by Mishimoto's dedicated team using 3D modeling and state-of-the-art evaluation tools.

Specifications

• Part Number: MMTS-ECL-95TL
• OEM Replacement Part Number: MD315301
• Mishimoto Activation Temperature: 155°F (68°C) / 62°C
• OEM Activation Temperature: 176°F (80°C) / 80°C
• Compatible Engine Codes: 4G63T, 4G63, 4G64, 4G69, 4G18, 4G93, 4G15, 6G72
• Fitment Type: Direct Replacement
• Installation Position: Engine coolant circuit (inline with OEM thermostat housing)
• Package Dimensions: 3" x 3" x 3"
• Shipping Weight: 1 lb
• UPC: 748354011593

Included Components

• 1x Mishimoto Racing Thermostat (MMTS-ECL-95TL)
• 1x Rubber Thermostat Gasket (where applicable for proper sealing)

Product Description

The Mishimoto MMTS-ECL-95TL Racing Thermostat is an engineered performance upgrade for a wide range of Mitsubishi and related DSM-platform vehicles spanning 1993 through 2010. Unlike the factory thermostat, which opens at 176°F (80°C), the Mishimoto unit activates at 155°F (68°C), allowing engine coolant to begin flowing through the system earlier. This earlier activation significantly reduces the buildup of heat under demanding conditions, making it an essential upgrade for modified or turbocharged applications where engine temperatures rise faster and stay elevated longer.

Installation is straightforward and requires no modifications - this thermostat is a direct drop-in replacement for OEM part number MD315301, fitting directly into the stock thermostat housing. It is compatible with 4G-series and 6G-series engines found across multiple Mitsubishi platforms, including the Eclipse 2G DSM (GST/GSX), Lancer Evolution VII/VIII/IX, Galant, Lancer, Mirage, Montero Sport, Outlander, and related Eagle and Dodge/Plymouth DSM siblings. Whether your build runs a 4G63T, 4G64, 4G69, 4G93, or 6G72, this thermostat is engineered to work within the existing cooling architecture.

The MMTS-ECL-95TL is ideal for daily drivers, track cars, and weekend builds alike - anyone seeking improved thermal management without major cooling system modifications. It pairs well with upgraded radiators, intercoolers, and coolant additives for a complete cooling system overhaul. Backed by Mishimoto's Lifetime Warranty, this thermostat is a reliable long-term investment in the health and performance of your engine.