Mr. Gasket 180°F High-Flow Thermostat – 4364 Copper/Brass Racing-Grade Temperature Control

Mr. Gasket 4364 is a 180° high-performance, high-flow thermostat built in copper and brass to open precisely at 180°F and maintain reliable coolant flow under high RPM conditions.

This thermostat is engineered for racing and high-output street engines that demand consistent temperature control and increased coolant throughput. Its construction and valve design resist pressure swings that occur at high engine speeds, ensuring the thermostat opens fully at the intended temperature whether idling or at redline. The result is a stable operating temperature window that supports performance tuning and reduces thermal variability during competitive driving.

How does the Mr. Gasket 4364 maintain temperature stability under high RPM?

The 4364 incorporates a robust valve mechanism and a design tuned to tolerate fluctuations in coolant pressure common at high RPM. Because it resists pressure-induced premature opening or sticking, it reliably reaches and fully opens at 180°F regardless of engine speed. This keeps coolant flowing properly when you need maximum heat rejection.

• Opens at a precise 180°F set point for predictable behavior
• Designed to resist large variations in coolant pressure
• Fully opens at correct temperature independent of RPM

What materials and construction features improve durability and corrosion resistance?

The thermostat uses copper and brass components chosen for thermal responsiveness and corrosion resistance in mixed-metal cooling systems. These materials hold up well against the erosive effects of coolant additives and prolonged heat cycling, extending component life in demanding applications. The high-flow design also minimizes internal restriction to reduce localized wear.

• Copper & brass construction for long-term corrosion resistance
• Robust components designed for repeated high-temperature cycles
• High-flow passageways to reduce stress from backpressure

Will this thermostat help on both the street and the race track?

Yes—the 4364 is intended for high-performance street driving as well as drag and oval track use. Its predictable opening temperature and high-flow characteristics make it suitable where both reliability and maximum cooling capacity are required. Installers will find it useful for builds that push cooling systems harder than stock setups.

• Recommended for high-performance street, drag race, and oval track engines
• High-flow design supports elevated heat loads during competition
• Consistent opening behavior aids tuning and engine longevity

How does high flow affect cooling system performance?

High flow reduces restriction in the thermostat housing so coolant moves more freely through the radiator and engine passages. That improves heat transfer efficiency, particularly under sustained high-load conditions. However, system balance (radiator capacity, pump flow, and shrouding) still matters for optimal temperature control.

• Improves coolant circulation and heat rejection under load
• Helps maintain target operating temperature during sustained stress
• Works best with matched radiators and adequate water pump flow

Who is this for: The Mr. Gasket 4364 180° thermostat is aimed at performance enthusiasts, engine builders, and racers who need a thermostat that opens precisely at 180°F, sustains full opening under high RPM and pressure variations, and offers the durability of copper and brass construction. Choose this unit when upgrading a stock thermostat for higher horsepower or when preparing a vehicle for drag, oval, or aggressive street use where consistent cooling response matters.