Mishimoto MMTS-RSX-02 Low Temp Thermostat for 2002-2006 Acura RSX 2.0L

Vehicle Fitment

• 2002-2006 Acura RSX (Base/Type-S, 2.0L I4)

Features

• Direct-fit low-temperature racing thermostat for Acura RSX cooling system
• Opens at a lower temperature than OEM for earlier coolant flow and improved cooling
• Helps maintain lower engine temperatures under performance driving conditions
• Ideal upgrade for street, track, and modified applications
• Precision calibrated to open around 155 °F (68 °C)
• Improves cooling system efficiency by reducing heat soak
• Beneficial for turbocharged or high-output builds
• Backed by Mishimoto Lifetime Warranty

Specifications

• Part Number: MMTS-RSX-02
• Thermostat Activation Temperature: ~155 °F (68 °C)
• OEM Activation Temperature: ~172 °F (78 °C)
• Engine Compatibility: 2.0L Inline-4 (K20 series)
• Fitment Years: 2002-2006 Acura RSX (all trims)
• Fitment Position: Engine cooling thermostat housing
• Application: Performance coolant temperature control

Included Components

• 1x Low-Temperature Racing Thermostat (MMTS-RSX-02)
• 1x Mishimoto Lifetime Warranty documentation

Product Description

The Mishimoto MMTS-RSX-02 Low Temperature Thermostat is engineered as a direct-fit upgrade for the 2002-2006 Acura RSX equipped with the 2.0 L inline-4 engine. Compared to the standard OEM thermostat, this performance thermostat opens at a cooler ~155 °F (68 °C) instead of ~172 °F (78 °C), allowing coolant to begin circulating sooner and helping reduce overall engine temperatures - a key benefit during spirited driving or performance use.

Installation is straightforward with this direct replacement unit designed to fit into the stock thermostat housing. Its lower activation point helps improve coolant flow and thermal management, making it suitable for enthusiasts looking to run cooler operating temperatures, whether on the street or at the track. Backed by Mishimoto's Lifetime Warranty, the MMTS-RSX-02 offers reliability and consistent performance with every drive.