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Flow Through Tire Sensors for TST TPMS - Qty 2
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Flow Through Tire Sensors for TST TPMS - Qty 2

Part Number: TST-507-FT-S2
160 Reviews | 61 Questions
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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. 1-800-940-8924 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. Great prices and Fastest Shipping for Flow Through Tire Sensors for TST TPMS - Qty 2. Accessories and Parts reviews from real customers.
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TST Accessories and Parts - TST-507-FT-S2

  • TPMS Sensor
  • Tire Pressure Monitor Parts
  • Sensors
  • TST

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.


Features:

  • 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 metal valve stems only
    • Works with 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
    • Included standard CR2032 battery can easily be found at your local store once you need to replace it


Specs:

  • Dimensions (each): 1" diameter x 15/16" tall x 1-11/16" long
  • Sensor Weight: 1 oz.
  • Pressure range: 1 psi - 218 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 507 Series Flow Through Transmitters for Truck System Technologies Tire Pressure Monitoring Systems - Qty 2







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Ratings & Reviews

4.8

160 reviews
5 Stars
(139)
4 Stars
(17)
3 Stars
(1)
2 Stars
(0)
1 Star
(3)
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by:
TST 507 TPMS System is a great product and easily expandable!
I recommend it to all who want accurate tire conditions while on the road.
Charles profile picture

Charles

4/16/2026

Works great and recommended it frequently to friends with motorhomes

by:
Work absolutely amazing! Just finished a 3000 mile trip and never missed a beat. Always link up and pressure readings are spot on. Had 2 different systems before this one and all were junk. These are 100% worth every penny.
by:
Fast shipping
by:
Tire sensors work very well.Thank you for the prompt shipping
by:
Very good product and etrailer was super easy to work with. Adam over there was very helpful and if you get him, he'll make sure you're good2go with product support and follow up. Highly recommend using etrailer, which I have done when the need arises for years.
by:
Working great
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by:
I have trusted TST TPMS since 2013. My new 2024 Tiffin Phaeton was delivered with Pressure Pro TPMS but the Pressure Pro system continually failed. One sensor at a time. I switched back to the TST system because TST has never let me down. I just change the batteries every year or two and I'm good to go.
by:
They are great
by:
I had factory installed TPS sensors the band that runs around the wheel in my Westlake Tires and Lyons head wheels on my trailer. I needed to change them for long-term traveling to a load range D instead of the C that came with the trailer from the factory. So I ordered the wheels and tires from etrailer. I wanted the ability to change the batteries in my sensors when they go out so I opted for the outside over the valve stem sensors. This way I’m able to change the batteries. Haven’t used the trailer yet since I installed the new tires, wheels and sensors. Will update this review after I have used them. They synced up to my control unit exactly as directed.!!
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

4/23/2025

Can't wait to hear how everything goes! Is the trailer for work or fun?

by:
Works great
by:
They work pretty well, but I have one and it keeps dropping out on me even with a new battery
Lazer S. profile picture
Etrailer Expert

Lazer S.

3/24/2026

Well that's not what we want to hear, Dennis. I don't think I have run into this happening before and it sounds like a possible defect. TST does prefer to handle their own warranty issues and I would contact them at (770) 889-9102 (their Customer Support Department). If they can't get you squared away, just let me know and I will see what we can do on our end.

by:
My Ford F350 DRW tire sensors are failing due to age / dead batteries. Ford wants $[XX] apiece for the sensors and $[XX] per tire to break down the tire/rims for installation. Thats $[XX] for tire sensors. Amazon sensors would not pair with my truck. I purchased 6 of these for a little more than $[XX] and installed them without breaking down the tire. I also have four of these on my 5th wheel RV and on the spare tir for the truck and the RV. That's ten sensors rolling and two on spare tires for a total of 12 sensors. And, I can change air pressure without removing the sensor. etrailer had them when everyone else was out of them. Also, the newer sensors permit changing the battery without a miniature screw driver and they use a more common battery (CR2032 as apposed to a CR1632). These are a great value.
Brooke M. profile picture
Etrailer Expert

Brooke M.

3/19/2025

Ha-HA! Yes! So glad we had in these in stock and were a great fit for you:) etrailer: 1 Amazon: 0

by:
Great price. Item in stock and delivered on time, as promised.
I wish all my transactions were this easy!
by:
Very good experience and service from etrailer, very prompt delivery
by:
Easy to install, but not sure how they work yet.
by:
We upgraded to the flow through sensors. It is now so much easier and faster to inflate our tires without having to remove sensors! We are extremely happy we invested in this upgrade.
by:
Arrived on time and was easy to install. Thanks again for a great product and fast delivery.
by:
TST products work great for me.
by:
perfect kit
by:
great product fast delivery Andy was great
by:
Saw these on YouTube and knew the necessity as my brother, a long-haul truck driver and 5th wheel RVer, says TPMS is a MUST. I have 6 wheels on my 5th wheel and just got 6 new Michelins on the pickup. I now have my pickup, 5th wheel, flatbed, and all of their spare tires monitored. Peace of mind is a wonderful thing when going across Wyoming at 80mph in 100 degree heat.
(Update) 70K miles in 8 months and this TPMS system is spot on. Thank you to etrailer.com for getting the correct sensors for my system in a fast and efficient manner. Great service at a great price. Very happy with my purchase.
Patrick profile picture

Patrick

8/27/2023

One year of safe travels with my TPMS system for my pickup, 5th wheel and flatbed trailer. Travel is so much more satisfying when I don’t have to stress about the tires.

by:
excellent service ! fast shipping and they always follow up to see if all is ok!
by:
Would not be without a TPMS on my RV. This system has worked flawlessly. As a reminder, make sure you replace the rubber valve stems in your wheels with metal ones before installing these sensors.
Brad profile picture

Brad

12/26/2022

One year later and could not be happier. We are full time on the road in our RV and depend on this system to alert us if we have a tire going down before we see the smoke and damage in the rear-view mirror. Over 5 years on the road, we have lost some tires, but none sense we installed this system.

by:
I've used the Roadmaster Hitch Mounted Spare Tire Carrier for the last year (2023) and have put over 7500 miles on it. The carrier has performed seamlessly and is still manageable when mounted 40 plus inches off the ground. I have it attached to a Torklift 5' extension that goes into a 3" receiver welded into my flatbed. To prevent bouncing I've had Torklift put in a support bracket from the lower(regular) receiver. No bounce!
by:
I purchased 6 tst internal sensors for our RV with the color monitor. I also purchased 4 flow-through monitors for our jeep, which we tow. The products are awesome and saved us from destroying tires on the RV. On RV’s with dual tires in the back, the inside tires get extremely hot in high summer time temperatures. The sensors taught us not to drive when ambient temperatures are 95 or higher. We have read where numerous RV’ers have had catastrophic blowouts on inside dual tires and our tst sensors allow us to avoid those dangerous situations. We absolutely feel the product should be installed on all R’s and trailers.
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See what our Experts say about this TST Accessories and Parts

Do you have a question about this Accessories and Part?
  • Replacement Flow Through Sensor for TST 507 Series TPMS Systems
    Thanks for the picture and information Sandra. The correct replacement sensor for your TST 507 TPMS system is the Replacement E22 Flow Through Sensor for TST 507 Series item # TST67FR. I think you mean rubber valve stem and yes this sensor will work with it. Flow-through sensors tend to be a bit heavier and can cause rubber valve stems to fail over time so it's recommended to use steel, chrome, or nickel valve stems with these types of sensors. However, the item # TST67FR will function...
    view full answer...
  • Are the TST 507 Flow Through Sensors Compatible With The 770 TST Series
    Hi Bill, that’s a great question and I completely understand wanting to make sure you’ve got all five tires covered without ending up with the wrong sensor. The TST 770 Series TPMS for RVs Part # TST94VR, is still compatible with the 507 flow through sensor part # TST-507-FT-S2. All you would need to do is program it into the 770 monitor for that fifth tire, so everything works together as one system. The 770 is essentially the updated version with a larger touchscreen and easier interface,...
    view full answer...
  • Should TST TPMS System Use Signal Booster
    Hi Bruce; all of their systems come with the Signal Booster / Repeater # TST-507-R and they recommend installing it. Other TPMS systems do the same thing. I would definitely add the signal booster, no point in having the system if it doesn't work properly. As far as the sensors go, what did you have on your E-Pro? If you had the regular cap sensors and didn't mind removing them to air up your tires you can use the # TST-507-RV-S4. If you like to fill up your tires frequently and don't...
    view full answer...
  • Do Flow Through and Cap TST Sensors Work with Same 507 Monitor
    Hey John, yes the flow through sensors like the part # TST-507-FT-S4 and the cap style like part # TST-507-RV-S2 both work with the 507 style monitor you have now. The flow through is generally the preferred style since it allows you to inflate through them. The cap style would be preferred if the space was limited or you just wanted the simplest setup as possible and wanted the sensor to be just like a standard cap. How many sensors do you need?
    view full answer...
  • Will E22 Flow Through Sensor TST67FR Work On TST 507 System Purchased In 2018?
    Hello Gary, thanks for reaching out. You are all good! The Replacement E22 Flow Through Sensor for TST 507 Series # TST67FR are exactly what you need. These will work with your TST507 TPMS you got back in 2018. They will work with all of the 507 series TPMS which is what you have. Crazy to think 2018 was 7 years ago. I feel old now lol.
    view full answer...
  • Troubleshooting Air Not Going Through the Flow Through Tire Sensors on a TST TPMS
    Hey Robert. You've done most of the troubleshooting steps I would recommend already but have you tried using a different air compressor or attachment? Fingers crossed but this could be a simple fix. The remaining solution I have, before recommending purchasing replacements, is to swap out the o-rings using the Replacement O-Rings for TST 507 Series TPMS Sensors for RVs item # TST84FR. If this doesn't work you'll need the Flow Through Tire Sensors for TST TPMS item # TST-507-FT-S2. How...
    view full answer...
  • Replacement Tire Sensors and Signal Booster For TST 507 Tire Pressure Monitoring System
    As you have the Monitor # TST-507-D-C you will simply need the Signal Booster # TST-507-R to go along with some new tire sensors. You do have the option of what sensors you will prefer to use from the list below. Brass Tire Sensors for TST TPMS - Qty 2 # TST-507-RV-S2 Brass Tire Sensors for TST TPMS - Qty 4 # TST-507-RV-S4 Flow Through Tire Sensors for TST TPMS - Qty 2 # TST-507-FT-S2 Internal Tire Sensor for TST TPMS Systems - Qty 1 # TST-507-INT-S1 These are the only sensors and quantities...
    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...
  • TST Tire Pressure Sensor with Color Display with 12 Total Sensors
    For a TST TPMS system with a total of 12 sensors you'd need the part # TST-507-FT-6-C for the color display setup with 6 sensors and then you'd need a quantity of 3 of the part # TST-507-FT-S2 which is a pair of sensors. The prices are available at the links below.
    view full answer...
  • Do You Carry More Than 2 Packs Of The Replacement TST 507 Sensors?
    Hey Brian, For those flow through sensors we only have replacement ones as either singles or a pack of 2. We do not carry any larger kits for those replacement ones. I checked with TST as well and they only package them as a 2 pack replacement sensor kit. If you need a full 10 that is what I would do, but if its possible you could get away with 8 you could just get a new kit for around the same price, # TST38FR. Are you needing extras to add to an additional trailer/vehicle?
    view full answer...
  • Recommended Flow Through Tire Sensors for a TST TPMS 507 System
    Yes, they are Bill and thanks for the information. The Flow Through Tire Sensors for TST TPMS item # TST-507-FT-S2 are going to be a solid upgrade over the standard replacement option item # TST-507-RV-S4. The Flow Through Tire Sensors for TST TPMS item # TST-507-FT-S2 are going to allow you to adjust the air pressure on your motorhome's tires without removing the sensors. These are only sold in a 2-pack so you'll need to purchase three of them. What kind of valve stems does your motorhome...
    view full answer...
  • Are The 507 Series TPMS Sensors Compatible With TST 770 D.D2 Monitor?
    Hello Thomas, thanks for getting in touch. Yes, the 507 series sensors are compatible with your TST 770 D.D2 monitor. You can use either the Internal Tire Sensor # TST-507-INT-S1. We also have the Brass Sensors # TST-507-RV-S2 and Flow Through Sensors # TST-507-FT-S2 that are all compatible with your monitor.
    view full answer...
  • Can TST TPMS 433.92 MHz Signal Booster Work with 2024 Chevy Silverado TPMS 433 MHz System
    According to my research the TST Signal Booster / Repeater # TST-507-R won't work. People have tried different aftermarket solutions but none of them have been able to communicate with the OEM TPMS on the newer GM trucks as of yet. I read that GM is in the process of making one but we both know to take that kind of news with a grain of salt and not to hold our breath. If you'd like more of an immediate solution then I recommend picking up a whole TST TPMS System # TST-507-FT-4-C. This...
    view full answer...
  • Are The TST 507 Tire Sensors Compatible With the New 770 Series Color Monitors?
    The new TST 770 series screens are compatible with the TST 507 tire sensors manufactured with a date code of 4519 and later. You will be able to use the Internal Tire Sensor # TST-507-INT-S1 with your monitor. We also have the Brass Sensors # TST-507-RV-S2 and Flow Through Sensors # TST-507-FT-S2 if you want to add additional sensors without having to dismount a tire.
    view full answer...
  • TST Tire Pressure Monitor Sensors for a Ford F-450 Dually
    Regardless of whether you go with the cap style or flow through, they use the same monitor so you should be good to continue use with your current monitor. I would recommend sticking with the flow through sensors like the Flow Through Tire Sensors for TST TPMS # TST-507-FT-S2 that you already have if they can fit your dually wheels. Since you already have some, you could remove them and test fit them first. Pretty much all valve stems have at least some rubber on them, more than likely...
    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...
  • Recommended Valve Stem Stabilizers for a 16 Inch Wheel
    We do carry the Wheel Masters Support Brackets for Rubber Valve Stems # WM8029VS which are designed to be used on 16 inch wheels. From the measurements and descriptions you have for your RV, I do suggest going with these. The TST TPMS for RVs # TST-507-FT-6-C is also highly recommended. This includes a booster, if needed, has flow through sensors, and can handle up to 196 psi. I do have to say that this will only cover 6 of your 7 wheels though. We do have replacement/add-on sensors (...
    view full answer...
    Image 1 for Image 2 for Image 3 for Image 4 for
  • Using TPMS Flow Through Sensors And Valve Extenders On A 2024 Ford F-450
    Hi John, TST Flow Through Sensors # TST-507-FT-S2 are approximately 2-1/8" long so they do add a bit to the overall length of the coming from the valve. TST likely told you that the sensor has to be directly after the valve to avoid any movement with the sensor that could damage it or the valve and to help prevent any false readings. With valve extenders like the Wheel Masters # WM8001-135 you'll be able to tuck the excess cable up since you'd be mounting the end of the extender to the...
    view full answer...
  • How Much do TST TPMS Sensors Weigh
    Hey Terry! The Brass Tire Sensors for TST TPMS like # TST-507-RV-S4 weigh approximately 0.54 oz each. The flow-through sensors like # TST-507-FT-S2 weigh about 0.77 oz to 1 oz each, it just depends on the production version. Because they are heavier, TST only recommends using the flow-through sensors with metal valve stems. Are you looking for a complete TPMS system or replacement sensors?
    view full answer...
  • Can TST TPMS With Internal Sensors Also Use Flow-Through Sensors
    That is an interesting question, so I reached out to the manufacturer, TST, who said yes, you can use the flow-through sensors with the internal sensors. The reason why is that each sensor - the internal and flow-through - has a unique 6 digit code so they are compatible, so long as they are all the same 507 version. So for the system with the six internal sensors for your motorhome, and compatible flow-through sensors for your towed Jeep, you will need the following: - TST TPMS - Color...
    view full answer...
  • Replacement O-Rings For a Tire Pressure Monitoring System
    Without knowing what TPMS sensors you have, I cannot say for sure whether we have the replacement o-rings you are needing or not. Currently the only o-rings for TPMS sensors that we have are the o-rings included in the Replacement Flow Through ST3 O-Ring and Hardware Kit # TST74FR. This kit fits TST TPMS systems for RVs (# TST-507-FT-6-C) and add-on flow-through TST TPMS sensors (# TST-507-FT-S2). If this is the system you have, then these are correct. If you have a different system,...
    view full answer...
  • Replacement Options For a TST TPMS Sensor with a Cracked Cap
    We do not have just the cap for TST TPMS sensors, and I am not aware of just the cap being available at all. For replacement options we have the Brass Tire Sensors for TST TPMS # TST-507-RV-S2 and the Flow Through Tire Sensors for TST TPMS # TST-507-FT-S2.
    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...
  • Flow Thru Sensors for TST TPMS and Replacement O-Rings and Hex Nuts
    We do have the parts available that you are needing for your TST 507 TPMS system. - Flow Through Tire Sensors for TST TPMS # TST-507-FT-S2 - Replacement Flow Through ST3 O-Ring and Hardware Kit with Screwdriver for TST TPMS Tire Sensors # TST74FR. This replacement kit will only work with the flow through sensors that are in the attached picture. If your current sensors look different there would be a different kit. If you can provide a picture of your current sensors, I would be happy...
    view full answer...
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