Mishimoto In-Line Oil Thermostat – Universal

Maintain optimal oil temperature in your external oil cooling system with the Mishimoto In-Line Oil Thermostat. This inline thermostat installs in the oil line between the engine and an external oil cooler, regulating oil flow through the cooler based on oil temperature — bypassing the cooler during warm-up and cold weather operation to bring oil up to operating temperature quickly, then opening to engage the cooler once optimal temperature is reached. Prevents overcooling, maintains consistent oil viscosity, and protects the engine across a wide range of operating conditions. Universal fitment for custom oil cooling system builds.

Key Features

• Inline Thermostat Design: Installs in-line between the engine and external oil cooler — automatically regulates oil flow through the cooler based on oil temperature for precise thermal management
• Prevents Overcooling: Bypasses the oil cooler during warm-up and cold weather operation — brings oil to optimal operating temperature quickly and prevents overcooling that can increase wear and reduce oil viscosity performance
• Engages Cooler at Optimal Temperature: Opens at the correct oil temperature to route oil through the external cooler — maintains consistent operating temperature under load
• Anodized Aluminum Construction: Durable anodized aluminum construction for long-term corrosion resistance and reliability in demanding conditions
• Universal Fitment: Compatible with most aftermarket external oil cooler setups — suitable for custom oil cooling system builds on any vehicle
• Mishimoto Quality: Manufactured by Mishimoto — a globally recognized leader in performance cooling solutions trusted by enthusiasts and motorsport competitors worldwide

Specifications

• Type: In-Line Oil Thermostat
• Material: Anodized Aluminum
• Fitment: Universal — external oil cooling systems
• Part Number: MMOP-EXTFC

Note: Designed for use with external oil cooler systems — verify AN fitting size compatibility with your oil cooler lines before ordering. Professional installation recommended. Includes mounting hardware and installation instructions.