MAHLE TX50488D Engine Coolant Thermostat Insert 88°C OE Replacement

The MAHLE TX50488D is an OE-grade, direct-fit engine coolant thermostat insert engineered to restore precise temperature regulation in your vehicle's cooling system. Designed and manufactured to meet or exceed original equipment specifications, this thermostat insert opens at 88°C (190°F) — the exact factory calibration point — ensuring your engine reaches optimal operating temperature quickly and maintains it consistently under all load conditions.

MAHLE is a globally recognized OEM supplier trusted by vehicle manufacturers and professional technicians worldwide. The TX50488D is a 100% new unit built from high-quality, heat-resistant materials engineered to withstand the demanding thermal cycles of modern diesel engines. The part number suffix "D" confirms the inclusion of an enclosed gasket for a complete, clean installation.

Key Features:

• Direct-fit, OE-style thermostat insert for drop-in replacement
• Opens at 88°C (190°F) per factory specification
• Includes gasket/seal for a complete installation
• 100% new — not remanufactured
• Manufactured to OEM tolerances for precise coolant flow control
• Engineered to resist heat cycling and long-term wear
• Helps prevent overheating, reduce engine wear, and maintain fuel efficiency

A failing thermostat can cause inconsistent heater performance, reduced fuel economy, and risk of engine overheating. The MAHLE TX50488D delivers reliable, factory-correct cooling system performance, making it the professional-grade choice for a lasting repair.