Improved Racing - FSC-165 Compact High-Flow Transmission & Engine Oil Cooler Thermostat

Compact High-Flow Engine & Transmission Oil Cooler Thermostat, 135°F

• Performs the critical function of bypassing the cooler until the oil has reached its minimum operating temperature.
• Designed for controlling fluid temperatures in transmissions, transaxles, transfer cases, differentials, and power steering systems.
• May be used for for controlling engine oil temperature in motorcycles, ATVs, go karts, and other small engines.
• Unique, patented internal design ensures the lowest pressure drop in the industry.
• Standard female -6AN O-ring boss threads.
• Lifetime Warranty. Made in the USA.

mproved Racing's Flow Series Compact (FSC) oil thermostat is an ultra-compact unit designed for use in cooling systems for transmissions, differentials, transaxles and small engines where flow rates do not exceed 5 GPM. This thermostat is perfect for engine oil cooling in motorcycles, ATVs, go karts, and other small engines.

The patented internal design (US patent 9,772,632) minimizes the pressure drop by strategically locating the bypass valve mechanism completely out of the primary fluid flow. This design is ideal for demanding applications that require low flow restriction in a compact and lightweight design.

Why Use a Thermostat?

Without a thermostat, engine oil, transmission fluid, gear bluid, and power steering fluid coolers may over-cool the fluid, delaying engine warm-up and resulting in horsepower loss, excessive engine wear, hard shifting, and reduced gas mileage. Oil thermostats perform the critical function of bypassing the cooler until the oil has reached its minimum operating temperature. A more capable cooler will often require an oil thermostat in order to maintain proper operating temperatures under low load conditions, cold weather, etc.

The thermostat maintains the oil exiting the engine at the rated minimum temperature in most conditions. It features female -6AN O-ring boss threads and is available with optional hose barb and male AN adapter fittings. The included brackets allow for multiple mounting options.

Operation

Features and Benefits

• Reduces excessive engine wear and horsepower losses while improving gas mileage by preventing oil temperatures from dropping below optimal levels
• Patented, high flow, low pressure drop design locates the valve assembly completely out of the primary fluid flow
• Maintains a minimum fluid temperature according to the typical stabilization temp in the table below, +/- 2°F (+/- 1°C)
• Allows a small percentage (less than 10%) of fluid to continually circulate through the cooler to eliminate air pockets and prevent cold fluid trapped in the cooler from shocking the system
• Rebuildable
• 6061-T6 billet aluminum construction with black MIL-A-8625 Type II anodized finish
• Lightweight at just 7.5 ounces (212g) without brackets or fittings

Temperature Rating Specifications

Applications

• Fluid cooling systems flowing up to a maximum of 5 GPM (18.93 LPM).
• Fluid cooling systems for automotive and small vehicle transmissions, transaxles, transfer cases and differentials.
• Oil cooling systems for small engines such as motorcycles, ATVs, go karts, snowmobiles, and small marine engines.
• Not for use with corrosive fluids. If used with water, a distilled water solution with a lubricant such as ethylene glycol must be used.

Includes

• 1x Compact remote thermostat block
• 2x Zinc-plated steel mounting brackets and screws