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Flow Through Tire Sensors for TST TPMS - Qty 2

Flow Through Tire Sensors for TST TPMS - Qty 2

Item # TST-507-FT-S2
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Flow through sensors for your TST TPMS let you inflate or deflate your tires without removing them from the valve stems. Use them to monitor 2 additional tires, to replace damaged or lost sensors, or to upgrade from sensors that require removal. Call 800-298-8924 to order TST accessories and parts part number TST-507-FT-S2 or order online at etrailer.com. Free expert support on all TST products. Guaranteed Lowest Price and Fastest Shipping for Flow Through Tire Sensors for TST TPMS - Qty 2. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (10)
  • Q & A (17)
  • Photos
  • Why etrailer?

TST Accessories and Parts - TST-507-FT-S2

  • TPMS Sensor
  • Tire Inflation and Repair
  • Tire Pressure Monitor Parts
  • TST
  • Sensors

Flow through sensors for your TST TPMS let you inflate or deflate your tires without removing them from the valve stems. Use them to monitor 2 additional tires, to replace damaged or lost sensors, or to upgrade from sensors that require removal.


  • Flow through sensors for your TST tire pressure monitoring system let you inflate or deflate your tires without removing the sensors
    • Allow you to monitor 2 additional tires or replace lost or damaged sensors
    • Work with TST-507-FT-4-C and TST-507-FT-6-C
    • Can also be used to upgrade TST-507-RV-6-C and TST-507-RV-4-C
  • Brass construction designed for use on steel, chrome, or nickel valve stems
  • Easy installation onto your tires' valve stems with included wrench and locking hex nuts
  • Included replacement hardware may be required when changing batteries
    • 2 O-rings and 2 washers help maintain internal waterproof integrity
    • 5 Screws hold sensor body together


  • Dimensions (each): 1" diameter x 7/8" tall x 2-1/8" long
  • Pressure range: 0 psi - 196 psi
  • Operating frequency: 433.92 MHz
  • Operating temperature range: -40 F - 176 F (-40 C - 80 C)
  • Storage temperature range: -40 F - 185 F (-40 C - 85 C)
  • Battery life: 1 year - 1-1/2 years
  • Quantity: 2 tire sensors
  • 3-Year limited warranty

Tire Sensor Installation

Tire sensor Install Diagram

  1. Screw the anti-theft hex nut onto your tire's valve stem threads until it bottoms out.
  2. Screw the sensor onto the valve stem. Tighten the sensor until the air stops leaking and the sensor bottoms out on the valve stem. Give it a slight twist to seat the sensor while being careful not to over-tighten.
  3. Use the included wrench to tighten the hex nut counterclockwise until it is snug against the sensor.
  4. Screw the tire's valve cap onto the sensor.

TST-507-FT-S2 Flow Through Transmitters for Truck System Technologies Tire Pressure Monitoring Systems - Qty 2

Customer Reviews

Flow Through Tire Sensors for TST TPMS - Qty 2 - TST-507-FT-S2

Average Customer Rating:  4.7 out of 5 stars   (10 Customer Reviews)

Flow through sensors for your TST TPMS let you inflate or deflate your tires without removing them from the valve stems. Use them to monitor 2 additional tires, to replace damaged or lost sensors, or to upgrade from sensors that require removal.

- TST-507-FT-S2

Great system! I would recommend this to anyone who is towing a RV or trailer. It does a great job monitoring pressure as well as tire temperature. Should not be towing without monitoring your tires pressure and temperature. A happy user! 910652

- TST-507-FT-S2


- TST-507-FT-S2


- TST-507-FT-S2

Like the new sensor!. Had to replace an older (set screw) model that got damaged. New sensor coded up first try, installed easy. Very much appreciate the new locking nut versus the set screw. To be honest I never was able to tighten the old style set screws on all 6 wheels anyway. The locking nut and tool give an added sense of security. Just installed today, so no long term assessment yet. As usual excellent service and turn time by etrailer! 866234

- TST-507-FT-S2


- TST-507-FT-S2

One stopped working within a year 856935

- TST-507-FT-S2

Bought for extra tag axles on Beaver mo torhome. 705957

- TST-507-FT-S2

The only Tire monitor system to buy! we have them on our triple axle DVR Santa Fe and our M102 Freightliner tow vehicle. 672506

Charlie - 07/20/2020


- TST-507-FT-S2

Good price , good product. 649722

- TST-507-FT-S2

Just what I needed and got for a price that I thought was fair and right 633734


Ask the Experts about this TST Accessories and Parts

  • Adding A Trailer Tire Pressure Monitoring System To An Existing Motorhome System
    The # TST-507-FT-S2 will work though these cannot be used on rubber stems and you will have a higher chance of curbing because these stand out a bit. I did contact TST who recommended the Brass Tire Sensors for TST TPMS - Qty 4 # TST-507-RV-S4 as a better solution that addresses those concerns. Either will work for you but I wanted to make sure you're aware of your options. Included are review videos for your review.
    view full answer...
  • Can Flow Through Tire Sensors for TST TPMS # TST-507-FT-S2 Be On Boat Trailer and Back into Water
    The sensors that mount on the wheels of the Flow Through Tire Sensors for TST TPMS # TST-507-FT-S2 that you referenced are water proof.
    view full answer...
  • Valve Stem Flow Through Sensors for Tire Pressure Management System
    The Flow Through Tire Sensors for TST TPMS - Qty 2 # TST-507-FT-S2 comes with the nut that fits on the valve stem behind the sensor. This nut and the special wrench will allow you to tighten that nut to the sensor from the back to secure it to your valve stem for increased security. You are correct that the nut and wrench are on the input side of the sensor and not the output so I'll have that photo removed as it is incorrect.
    view full answer...
  • Will the TST-507-RV-6-C Work on an RV/Toad That is 68 ft Long Overall?
    I spoke with my contact over at Truck Systems about the TPMS for RVs # TST-507-RV-6-C and those TPMS sensors will work for your RV, but he mentioned that you would likely want to use the system that has the Flow-Through caps instead, which can be found with part # TST-507-FT-6-C . This is the same exact system with the color monitor, but the caps will allow you to fill your tires without removing the TPMS caps if the need arises. Since there is not a pack of 12 sensors available, you'll...
    view full answer...
  • TPMS to Use with Wheel Masters Airless 4-Hose Inflation Kit
    I reached out to my contact at TireMinder who said that their Smart TPMS # TPMS-APP-6 is only compatible with valve extensions if they are solid steel and not braided. Since the Wheel Masters Airless 4-Hose Inflation Kit # WM82082 uses braided hoses you'll need to use a different system. I reached out to my contact at TST who said that their sensors are compatible as long as the end of the valve is secured with a bracket like what comes with the Wheels Masters kit. Since this is the...
    view full answer...
  • Can TST Flow Through Tire Sensors Replace Standard Sensors
    To replace the standard sensors of your TST TPMS for RVs # TST-507-RV-4-C you need the standard Brass Tire Sensors # TST-507-RV-S4, but you can absolutely upgrade your system to use the flow through tire sensors. I recommend doing this because you don't have to remove flow through sensors to add air to your tires, making it much easier. To add 4 of the flow-through sensors you need to order a quantity of 2 of the Flow Through Tire Sensors for TST TPMS # TST-507-FT-S2. It sounds like...
    view full answer...
  • How to Monitor Tires on 2018 Ford F-250 with TST Tire Pressure Monitoring System for Trailer
    The TPMS on your 2018 Ford F-250 are using their own system and it won't be compatible with the TST TPMS # TST-507-FT-4-C that you are using for your trailer. If you wanted to use the TST to monitor the tires on your F-250 as well then you'll need to install some TST sensors on your truck tires. You can either use more of the Flow Through Sensors # TST-507-FT-S2 (which comes with a quantity of 2 sensors) or you could mount the Internal Sensor # TST-507-INT-S1 on all 4 wheels but this option...
    view full answer...
  • Can I Change my TST TPMS Cap Sensors Over to Flow Through Sensors
    Great News! We have the replacement Flow Through Tire Sensors for TST TPMS Systems part # TST-507-FT-S2. These will easily pair with your current TST monitor allowing you to monitor your pressures and also check them easily with the removable caps. These come as a 2 pack so just order the quantity you need. I have linked them as well as the instructions for pairing them if you do not still have the user's manual.
    view full answer...
  • Recommended TST TPMS System for 30 Foot Trailer and 2019 Chevrolet Silverado 2500 HD
    If your 2019 Chevy Silverado 2500 HD Duramax already has a built in TPMS, I don't think you'd need to add the additional sensors to the TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors # TST-507-FT-4-C, but I would definitely consider it. The great thing about adding sensors to this system and not using your vehicle's monitor, is that you can monitor everything on one monitor, as opposed to two. The TST system has an easy to read monitor that can be setup...
    view full answer...
  • Recommended TPMS for Motorhome and Tow Vehicle
    The TST TPMS for RVs part # TST-507-FT-6-C is what I recommend using to monitor the tire pressures on both the motorhome and towed vehicle. This system uses the flow-through sensors which will be best because motorhomes usually have valve stem extenders which interfere with the other cap-style sensors. The monitor is powered via a cigarette lighter plug which could be modified to wire directly to the battery but this is not something I can recommend. The system will show the psi inside...
    view full answer...
  • Availability of TPMS with 6 Flow Through Tire Sensors
    I have the perfect solution for you, but TireMinder does not offer flow through sensors for their Tire Pressure Monitoring Systems (TPMS), like the # TM-A1A-6 system you were checking out, which uses standard sensors. Instead, take a look at the TST TPMS for RVs # TST-507-FT-6-C, which includes a full-color monitor, signal booster, and 6 flow through sensor, just like you wanted. Additional flow through sensors for this specific system are also available as part # TST-507-FT-S2. I've...
    view full answer...
  • Is There a Way to Monitor 12 Tire Pressures between RV and Trailer
    The TST tire pressure mounting systems can support up to 38 tire pressures monitored so for that you'd want to start with the TST TPMS for RVs # TST-507-FT-6-C which comes with 6 sensors and then add three sets of 2 sensor packs with part number # TST-507-FT-S2 and you'd be set!
    view full answer...
  • Recommended TPMS for 18 Wheeler
    The TPMS I recommend for an 18 wheeler is the TST TPMS for RVs part # TST-507-FT-6-C because it has a range extender and uses flow-through sensors which are both things you will need. The range extender will be needed as 18 wheels are generally pretty long in overall length and the flow-through sensors are needed because most dual tire applications use valve stem extenders and you'll need to install the sensor between the wheel and extender in order to get the proper reading. For extra...
    view full answer...
  • Recommended Tire Pressure Monitor and Flow Through Sensors For Fleet
    The TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors # TST-507-FT-4-C will allow you to monitor up to 38 tires on the single monitor. For your additional sensors you can simply use # TST-507-FT-S2 and then you can use # TST-507-R for each vehicle or trailer. If you want multiple monitors you can use the Color Monitor for TST TPMS Systems # TST-507-D-C.
    view full answer...
  • Replacing Damaged or Lost Sensor on TST TPMS TST-507-FT-6-C
    According to my contact at TST, there are two scenarios that would indicate a sensor failure on your TST TPMS # TST-507-FT-6-C. If the battery is dead or sensor communication is interrupted temporarily, lines or dashes "---" are displayed for that sensor on the monitor. Since the battery life on the system can be anywhere from 12 to 18 months, this is unlikely. Also, the system automatically refreshes to display new information every 5 minutes, so the dashes would not be displayed for...
    view full answer...
  • Can Additional Sensors Be Added to Tire Pressure Monitoring System for 8 Tires
    You can absolutely add sensors for a tire pressure monitoring system (TPMS) to monitor 8 tires on your RV. There are two options for a TPMS I recommend: - TireMinder Smart TPMS for RVs - Signal Booster - 6 Tire Sensors # TPMS-APP-6 with Brass Tire Sensors for TireMinder TPMS - Qty 2 # TM-2Brass - TST TPMS for RVs - Color Display - Signal Booster - 6 Flow Through Tire Sensors # TST-507-FT-6-C with Flow Through Tire Sensors for TST TPMS - Qty 2 # TST-507-FT-S2 Each of these are great...
    view full answer...
  • TPMS System for Dual Rear Wheel Motor Homes with Valve Extenders
    The TST TPMS for RVs part # TST-507-FT-4 is ideal for your situation. It offers 4 flow through sensors. These sensors will attach to your factory valve stems then your extenders can attach to them. This will eliminate the issue with the excess weight of the sensors being to great on the end of the extenders causing them to fail. This will take care of the 4 rears now for the 2 fronts use the Brass Tire Sensors for TST TPMS part # TST-507-RV-S2 which will give you the two standard front...
    view full answer...

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Info for this part was:

Edited by:
Tyler C
Expert Research:
Jameson C
Installed by:
Kathleen M
Installed by:
Shane H
Installed by:
Adam E
Video by:
Chris R
Video by:
Michael B
Written by:
Matthew S

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