Skip to content
High-Flow Engine & Transmission Oil Cooler Thermostat (FSM-215)
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
SKU: FSM-215
Improved Racing's Flow Series Motor Sport (FSM) oil thermostat is a universal solution that can be used with any oil cooler on any vehicle or industrial application flowing up to 20 GPM (75.71 LPM).
The device's unique, patented internal design (US patent 9,772,632) ensures a low pressure drop by placing the bypass valve mechanism completely out of the primary oil flow. This arrangement also allows for a compact design.High performance vehicles require large oil coolers to ensure that the oil does not overheat during strenuous use. These coolers also introduce the danger of over-cooling the oil and delaying engine warm-up, resulting in horsepower loss, excessive engine wear and reduced gas mileage. Oil thermostats perform the critical function of bypassing the oil cooler until the oil has reached its minimum operating temperature.
The thermostat features female -10AN O-ring boss threads and is available with optional fittings (at an additional cost) in 3/8" or 1/2'' hose barb or AN fittings in -6AN, -8AN, -10AN, or -12AN. The included brackets allow for multiple mounting options.
Supersedes part numbers ENV-100 and EUN-1000.
Operation
Features and Benefits
- Reduces excessive engine wear and horsepower losses while improving gas mileage by preventing oil temperatures from dropping below optimal levels
- Maintains a minimum fluid temperature according to the typical stabilization temp in the table below, +/- 2°F (+/- 1°C)
- Patented, high flow, low pressure drop design locates the valve assembly completely out of the primary fluid flow
- 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 12.7 ounces (360g) without brackets or fittings
Temperature Rating Specifications
| Part Number | Typical Stabilization Temp | Activation Temp | Full Flow Temp | Recommended Application |
|---|---|---|---|---|
| FSM-145 | 145ºF (63ºC) | 140ºF (60ºC) | 163ºF (73ºC) | Trans & Diff Fluid |
| FSM-165 | 165ºF (74ºC) | 160ºF (71ºC) | 181ºF (83ºC) | Trans & Diff Fluid |
| FSM-185 | 185ºF (85ºC) | 180ºF (82ºC) | 203ºF (95ºC) | Engine Oil (Street & Strip) |
| FSM-205 | 205ºF (96ºC) | 200ºF (93ºC) | 221ºF (105ºC) | Engine Oil (Street & Strip) |
| FSM-215 | 215ºF (102ºC) | 212ºF (100ºC) | 233ºF (112ºC) | Engine Oil (Road Racing) |
Valve assembly is housed completely between the two ports. No valves, springs, or thermal motor interrupting the primary oil flow!
Compact dimensions (shown in inches)
Brackets allow for multiple mounting configurations
Available (at an additional cost per each) with 3/8" or 1/2'' hose barb fittings or AN fittings in -6AN, -8AN, -10AN, or -12AN
Applications
- Engine, transmission, differential, and industrial fluid cooling applications flowing up to 20 GPM (75.71 LPM)
- Passenger car automotive, marine, and experimental aircraft engine oil cooling systems
- Automotive and truck power steering fluid cooling systems
- Diesel and gas truck transmission fluid cooling systems
- Diesel and gas truck differential and transfer case fluid cooling systems
- 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 Remote thermostat block
- 2x Zinc-plated steel mounting brackets and screws
- Improved Racing's Flow Series Motor Sport (FSM) oil thermostat is a universal solution that can be used with any oil cooler on any vehicle or industrial application flowing up to 20 GPM (75.71 LPM).
- Accelerates fluid warmup time and maintains a minimum fluid temperature.
- Patented high-flow design with no valves, springs, or other obstructions in the primary oil flow.
- Features -10AN female O-ring boss ports. Optional adapter fittings available in various sizes.
- Lifetime warranty. Made in the USA.
| Drop Ship Item |
No
|
|---|---|
| Special Order Item |
No
|
| Manufacturer |
Improved Racing
|
| Part Weight |
12.7 oz (360g)
|
| Primary Material |
6061-T6 aluminum
|
| Finish |
Type II Anodized
|
| Color |
Black
|
| Minimum Operating Temperature |
-40°F (-40°C)
|
| Maximum Operating Temperature |
302°F (150°C)
|
| Inlet Port Size |
-10AN O-Ring Boss Female
|
| Outlet Port Size |
-10AN O-Ring Boss Female
|
| Maximum Operating Pressure |
300 psi (20.68 bar)
|
| Max Recommended Flow Rate |
Up to 20 GPM (76 LPM)
|
| Fluid Compatibility |
Coolants
Engine oil Power Steering Fluid Transmission fluid |
Our History
For 23 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.