---
product_id: 216117115
title: "Schrader TPMS Retrofit Kit Designed For Use On Passenger Vehicles and Light Trucks Built Prior to 2008 Without Factory Installed TPMS. Ideal for Off Road Applications and Classic Collector Cars."
price: "€ 289.69"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.de/products/216117115-schrader-tpms-retrofit-kit-designed-for-use-on-passenger-vehicles
store_origin: DE
region: Germany
---

# 12V power for reliable performance Includes 4 long-lasting lithium-ion batteries Compatible with pre-2008 passenger vehicles & light trucks Schrader TPMS Retrofit Kit Designed For Use On Passenger Vehicles and Light Trucks Built Prior to 2008 Without Factory Installed TPMS. Ideal for Off Road Applications and Classic Collector Cars.

**Price:** € 289.69
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your classic drive with next-gen tire safety!

## Quick Answers

- **What is this?** Schrader TPMS Retrofit Kit Designed For Use On Passenger Vehicles and Light Trucks Built Prior to 2008 Without Factory Installed TPMS. Ideal for Off Road Applications and Classic Collector Cars.
- **How much does it cost?** € 289.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/216117115-schrader-tpms-retrofit-kit-designed-for-use-on-passenger-vehicles)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Boost Safety & Control:** Enhance handling and braking with real-time tire pressure alerts
- • **Plug-and-Play Installation:** No complex wiring—get up and running fast with included components
- • **Stay Ahead of Tire Trouble:** Prevent blowouts and accidents with proactive pressure monitoring
- • **Effortless OE-Quality Upgrade:** Transform your classic ride with factory-grade TPMS in minutes
- • **Perfect for Off-Road & Classics:** Tailored for vintage vehicles and rugged adventures alike

## Overview

The Schrader SCHRFK4S Retrofit Kit brings original equipment quality TPMS to passenger vehicles and light trucks built before 2008 without factory-installed systems. Powered by 12V and including 4 lithium-ion batteries, this compact kit ensures quick installation and reliable tire pressure monitoring, enhancing safety, handling, and preventing blowouts—ideal for off-road enthusiasts and classic car collectors seeking modern peace of mind.

## Description

"Schrader's SCHRFK4S Retrofit Kit is a sleek, stylish way to monitor tire pressure in vehicles built before 2008 that do not have TPMS installed on the vehicle. TPMS has been proven to improve handling, braking distance, and significantly decrease blowouts and accidents caused by low tire pressure. With Schrader's SCHRFK4S Retrofit Kit, drivers can still reap the many benefits of a functioning TPMS system even if it was not originally installed on the vehicle. Retrofit kits are ideal for off-road applications where tire pressure requirements are different than placard pressure. Also ideal for classic and vintage collector cars. Features Dash-mounted receiver/display capable of monitoring a full-size spare tire (fifth sensor sold separately). Four wheel-mounted transmitters. TPMS kit for passenger cars and light trucks with .453"" rim hole. Solar-powered and wireless display. Displays individual tire pressure and temperature. Convertible units: °F/°C, PSI/BAR. Individual axle placard settings. Real-time monitoring, including pressure by location. Audio and visual warnings. Easy to use. Benefits Improved fuel economy. Improved vehicle handling. Lowered risk of hydroplaning. Decreased tire wear. Reduced braking distance. Replacement Sensor Part Number: 29086 (sold separately) Part No.: 29086 Commercial Name: Schrader Rubber Snap-in 433MHz Sensor for GM Applications OEM Sensor P/N: 13516165; 13522631; 13540603; 13544444 EAN Code: 5054208007915 EZ-sensor coverage: Yes"

Review: Easy add on system and getting another, perhaps more - Since I do TPMS certification training this product intrigued my interest. Schrader provides many of the OE market and figured this would be a good product. I would say the sensors are rock solid and in fact are the same as supplied to many GM vehicles. A little poking at the sensors revealed this and I chose to settle on a 2018 Chevrolet Silverado for sensor testing and verification and this is NOT necessary, just for my own curiosity. Also these are 433 MHz if anyone is interested. And if a sensor goes bad over time then a new one can be programmed to match the failed sensor, again using the 2018 Chevy as the protocol to use, without having to relearn the display unit. Or you can buy the Schrader 29015 for replacement sensors or you can add 2 more sensors to support a pickup dually. If you buy the Schrader 29015 to replace a sensor then the display unit will need to relearn the sensors. Installation went well. I did my own as I have access to the tire changer and balancer. Some videos on you tube show various methods in doing this procedure. I did this on a 2006 Mustang. I only broke the outer bead, removed the old stem and installed the new stem with sensor while pushing the outer bead down to get access. Use tire lube all round. The sensors are marked so you will know where to place them with the corresponding rim. Inflated and checked the balance (it did not change the balance on 1 tire and slightly on the other 3). I would balance the tires anyway but since these had just been done last month I was curious. The sensors are not heavy at all. I did charge the unit using the USB connector and from then on it seems to do okay using the solar charger built into the top of the display unit. Displays both pressure and temperature. It is interesting to see the pressure and temp rise as you drive it during different driving distances and outside temperature conditions. Really brings home the fact you should check and adjust air pressure when the tires have not been driven for a few hours. I had 3 at 32 and the FR at 30. After driving for 30 minutes the 3 rose to 34 and the FR to 32. So checking the FR after driving would have said ok and the other 3 a bit over. Adjusted RF to 32 cold the next morning solved this bit of OCD. All is well. You can change the display pressure units and change temperature units as well. All of this is in the manual. I did do some testing holding the sensors at the valve stem of my trailer and triggering them with the Snap-On TPMS4, the sensors will read when the display unit is in the cab of my pickup. Seems promising and may add this to my trailer. Nice thing is the display unit can go with the trailer and is not wired to the vehicle, though you could use a power point to charge the display unit. OK a bit of TPMS lesson/terminology. Sensors can be OE like the 29015 or programmable like the Schrader 33500 but the 33500 WILL need to be programmed to the proper protocol. The display unit (or vehicle) may need to relearn the sensors especially if the vehicle displays tire pressure based on where they are oin the vehicle and this display unit does. If you rotate tires then you will need to follow the relearn procedure in the manual and don’t lose it Schrader doesn’t seem to have one online, yet. If you do rotate tires and do not do the relearn then it is not a big deal just check ALL the tires when you get a low tire alert so no different than a Ford/Toyota and some others. Also I may suggest max top speed for these sensors is 115 mph according to the documentation I have seen at Schrader Academy. They do make sensors for up to 155 mph should you need that level of performance. All in all a nice unit that comes with a display unit and $120.00 of sensors. Not bad and time will tell for reliability of the head unit. Not concerned with the sensors they are Schrader OE. UPDATE: Added one of these to my older pickup and works very well. UPDATE: The Schrader 29015 is replaced by the 29086. Still working well after 3 years. UPDATE: The battery died in one of my units and I got a replacement battery (102535). I did have to clip the connector as the replacement battery had a larger connector. Soldered the wires and some heat shrink tubing and it was working well. Four screws on the bottom and the top cover tilts forward, be careful as there are wires attached to the buttons on the top cover. Two more screws and you can tilt the board up and the battery is held in with double sticky tape. Reassembled carefully and the unit functions well.
Review: Works well! - I'm using this kit to monitor the tires on my trailer. I haven't towed it yet with these sensors but here are some things I've noted so far. Switching from 2 to 4 to 6 wheels only gives me the screens attached. I'll assume that it will go to six like in the directions if 2 more sensors are added. The temperatures shown are off by a few degrees, but not enough to make a difference. Since these are GM sensors you can can also activate them with the orange TPMS learning tool. Helpful if you want to check pressure without driving around. Also, you can activate the sensors before installation by shaking them. The sensors and display have enough range to work on an 18' car trailer. I can even put the display outside my metal sided pole barn and activate the sensors with success. Update, I also posted this on a forum so some could be a repeat: So here is a slightly longer term review of the Schrader system I've been mentioning here. I have 2 of them, one for my car trailer and one for the camper, this is the first year I've been using the system and have towed both trailers twice. Car trailer is an open 18 foot and the camper is an older (aluminum siding instead of fiberglass) 27 foot. Bottom line up front: The system works better on the car trailer than the camper, but still works great(ish) if you wake up everything with the relearn tool. Details below. I usually activate the sensors with the relearning tool before leaving the house, you don't have to put the display in learning mode. When you turn it on there are no pressures displayed as everything has been parked for a while. With the display in the truck and using the relearn tool, all sensors wake up and display their pressure and temperature. This part is interesting as the camper has the spare tire mounted on the rear bumper and it works this way!!! I had an extra 433mhz sensor so I figured why not see how well it works on the spare. I had to set the display for 6 tires and it doesn't complain that there are only 5. Now because the spare is just along for the ride and doesn't actually spin, I get an error on the display after about 45 minutes to an hour of driving. The first time it happened I wondered if it just timed out or if the spare fell off the camper. The display alarms and shows -- for pressure and temp, the alarm is silenced by pressing any button on the display. Not a big deal and I'll probably set it back to 4 wheels eventually, but it's nice to use the sensor in the spare so I can check the pressure without pulling off the tire cover. Yeah, I get it... first world problems. Side note, the display cycles screens back and forth to show the other 2 tires since it only has room to display 4 tires at once. After the display has cycled once you can hit the setup button to cycle the screen manually. The display shuts off after a certain amount of time unless you shut it off manually, this is based on when it last detects movement. Before the season started I kept the displays on my toolbox and they would both wake up when I either opened a drawer or put something on the box. Cool, they work as designed and would display the last values for the pressure and temp. The display uses solar power to keep the battery charged (or has a USB-C port for power). Now here is where the questions start... If the display times out it keeps the last values, if it's shut off then on, the pressure and temp memory is cleared and it waits for the sensors to wake up before displaying anything. This got me thinking... if the sensors wake up with the relearn tool and that somehow makes the range greater to ensure a good signal, does a dropped signal (because it's out of range) mean the display still shows the last reading? The answer is yes, unfortunately. Parking the camper, then going out somewhere means the display will still show the last pressures even when you're MILES away from the sensors.... with no alarm saying you're out of range. *Unless the spare tire alarm went off, in that case as soon as you open the door to get in, the display wakes up, and starts beeping because the spare signal was lost but all the other tires show the last values. Confusing. So as a better test I shut off the display then turned it back on while driving. On the car trailer the front axle showed up first followed by the rear, it took a hair longer to show everything but still reasonable I suppose. The camper is a different story. On powering up the front axle sensors would show eventually then a few miles later one of the rear popped up, by the time I arrived all 4 were showing, I didn't notice when the last tire showed up and don't think the alarm for the spare came back on. Overall I feel the Shrader add on kit is worth it if you know these limitations.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07X575DWQ |
| Batteries | 4 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #484,726 in Automotive ( See Top 100 in Automotive ) #112 in Aftermarket Tire Pressure Monitoring Systems (TPMS) |
| Brand | Schrader TPMS Solutions |
| Customer Reviews | 4.4 4.4 out of 5 stars (74) |
| Date First Available | August 28, 2019 |
| Exterior | Black plastic |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.37 pounds |
| Item model number | SCHRFK4S |
| Manufacturer | Schrader TPMS, A Sensata Technologies Brand |
| Manufacturer Part Number | SCHRFK4S |
| Model | SCHRFK4S |
| OEM Part Number | NR |
| Product Dimensions | 8.25 x 7 x 3 inches |
| Voltage | 12 Volts |

## Images

![Schrader TPMS Retrofit Kit Designed For Use On Passenger Vehicles and Light Trucks Built Prior to 2008 Without Factory Installed TPMS. Ideal for Off Road Applications and Classic Collector Cars. - Image 1](https://m.media-amazon.com/images/I/71iWJOXvx4L.jpg)

## Questions & Answers

**Q: Does the solar panel still charge the display unit while the display unit is off?**
A: Yes.

**Q: 08 envoy only displays the tpms symbol. Can this receiver receive information at the same time the vehicles system receives data.**
A: It's a simple question. His car has hardware tpms sensors in all 4 tires but lacks the display ability to display all the individual pressures of each of the 4 tires. Instead there's just ONE "idiot light" on dash which has two states (on or off). Far less informative than a system that constantly display realtime PSI data for all 4. 

Questioner is asking if this Schrader system's display can sync up with his OEM tpms hardware already existing in his tires and intercept the PSI data for each tire individually and display them, giving him realtime PSI data

**Q: What is the lowest psi it will show? looking at putting on an off road vehicle which will run as low as 8 psi at times.**
A: Unfortunately the lowest configurable pressure is 21.5 PSI

**Q: Will it work with shraeder EZ-PAD**
A: If the EZ pad is for programming, then I believe it will not work because it doesn't need it. The retrofit kit has a basic control unit that you set up manually using buttons on the unit. Best to verify with manufacturer.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy add on system and getting another, perhaps more
*by R***H on August 9, 2020*

Since I do TPMS certification training this product intrigued my interest. Schrader provides many of the OE market and figured this would be a good product. I would say the sensors are rock solid and in fact are the same as supplied to many GM vehicles. A little poking at the sensors revealed this and I chose to settle on a 2018 Chevrolet Silverado for sensor testing and verification and this is NOT necessary, just for my own curiosity. Also these are 433 MHz if anyone is interested. And if a sensor goes bad over time then a new one can be programmed to match the failed sensor, again using the 2018 Chevy as the protocol to use, without having to relearn the display unit. Or you can buy the Schrader 29015 for replacement sensors or you can add 2 more sensors to support a pickup dually. If you buy the Schrader 29015 to replace a sensor then the display unit will need to relearn the sensors. Installation went well. I did my own as I have access to the tire changer and balancer. Some videos on you tube show various methods in doing this procedure. I did this on a 2006 Mustang. I only broke the outer bead, removed the old stem and installed the new stem with sensor while pushing the outer bead down to get access. Use tire lube all round. The sensors are marked so you will know where to place them with the corresponding rim. Inflated and checked the balance (it did not change the balance on 1 tire and slightly on the other 3). I would balance the tires anyway but since these had just been done last month I was curious. The sensors are not heavy at all. I did charge the unit using the USB connector and from then on it seems to do okay using the solar charger built into the top of the display unit. Displays both pressure and temperature. It is interesting to see the pressure and temp rise as you drive it during different driving distances and outside temperature conditions. Really brings home the fact you should check and adjust air pressure when the tires have not been driven for a few hours. I had 3 at 32 and the FR at 30. After driving for 30 minutes the 3 rose to 34 and the FR to 32. So checking the FR after driving would have said ok and the other 3 a bit over. Adjusted RF to 32 cold the next morning solved this bit of OCD. All is well. You can change the display pressure units and change temperature units as well. All of this is in the manual. I did do some testing holding the sensors at the valve stem of my trailer and triggering them with the Snap-On TPMS4, the sensors will read when the display unit is in the cab of my pickup. Seems promising and may add this to my trailer. Nice thing is the display unit can go with the trailer and is not wired to the vehicle, though you could use a power point to charge the display unit. OK a bit of TPMS lesson/terminology. Sensors can be OE like the 29015 or programmable like the Schrader 33500 but the 33500 WILL need to be programmed to the proper protocol. The display unit (or vehicle) may need to relearn the sensors especially if the vehicle displays tire pressure based on where they are oin the vehicle and this display unit does. If you rotate tires then you will need to follow the relearn procedure in the manual and don’t lose it Schrader doesn’t seem to have one online, yet. If you do rotate tires and do not do the relearn then it is not a big deal just check ALL the tires when you get a low tire alert so no different than a Ford/Toyota and some others. Also I may suggest max top speed for these sensors is 115 mph according to the documentation I have seen at Schrader Academy. They do make sensors for up to 155 mph should you need that level of performance. All in all a nice unit that comes with a display unit and $120.00 of sensors. Not bad and time will tell for reliability of the head unit. Not concerned with the sensors they are Schrader OE. UPDATE: Added one of these to my older pickup and works very well. UPDATE: The Schrader 29015 is replaced by the 29086. Still working well after 3 years. UPDATE: The battery died in one of my units and I got a replacement battery (102535). I did have to clip the connector as the replacement battery had a larger connector. Soldered the wires and some heat shrink tubing and it was working well. Four screws on the bottom and the top cover tilts forward, be careful as there are wires attached to the buttons on the top cover. Two more screws and you can tilt the board up and the battery is held in with double sticky tape. Reassembled carefully and the unit functions well.

### ⭐⭐⭐⭐⭐ Works well!
*by C***I on October 14, 2023*

I'm using this kit to monitor the tires on my trailer. I haven't towed it yet with these sensors but here are some things I've noted so far. Switching from 2 to 4 to 6 wheels only gives me the screens attached. I'll assume that it will go to six like in the directions if 2 more sensors are added. The temperatures shown are off by a few degrees, but not enough to make a difference. Since these are GM sensors you can can also activate them with the orange TPMS learning tool. Helpful if you want to check pressure without driving around. Also, you can activate the sensors before installation by shaking them. The sensors and display have enough range to work on an 18' car trailer. I can even put the display outside my metal sided pole barn and activate the sensors with success. Update, I also posted this on a forum so some could be a repeat: So here is a slightly longer term review of the Schrader system I've been mentioning here. I have 2 of them, one for my car trailer and one for the camper, this is the first year I've been using the system and have towed both trailers twice. Car trailer is an open 18 foot and the camper is an older (aluminum siding instead of fiberglass) 27 foot. Bottom line up front: The system works better on the car trailer than the camper, but still works great(ish) if you wake up everything with the relearn tool. Details below. I usually activate the sensors with the relearning tool before leaving the house, you don't have to put the display in learning mode. When you turn it on there are no pressures displayed as everything has been parked for a while. With the display in the truck and using the relearn tool, all sensors wake up and display their pressure and temperature. This part is interesting as the camper has the spare tire mounted on the rear bumper and it works this way!!! I had an extra 433mhz sensor so I figured why not see how well it works on the spare. I had to set the display for 6 tires and it doesn't complain that there are only 5. Now because the spare is just along for the ride and doesn't actually spin, I get an error on the display after about 45 minutes to an hour of driving. The first time it happened I wondered if it just timed out or if the spare fell off the camper. The display alarms and shows -- for pressure and temp, the alarm is silenced by pressing any button on the display. Not a big deal and I'll probably set it back to 4 wheels eventually, but it's nice to use the sensor in the spare so I can check the pressure without pulling off the tire cover. Yeah, I get it... first world problems. Side note, the display cycles screens back and forth to show the other 2 tires since it only has room to display 4 tires at once. After the display has cycled once you can hit the setup button to cycle the screen manually. The display shuts off after a certain amount of time unless you shut it off manually, this is based on when it last detects movement. Before the season started I kept the displays on my toolbox and they would both wake up when I either opened a drawer or put something on the box. Cool, they work as designed and would display the last values for the pressure and temp. The display uses solar power to keep the battery charged (or has a USB-C port for power). Now here is where the questions start... If the display times out it keeps the last values, if it's shut off then on, the pressure and temp memory is cleared and it waits for the sensors to wake up before displaying anything. This got me thinking... if the sensors wake up with the relearn tool and that somehow makes the range greater to ensure a good signal, does a dropped signal (because it's out of range) mean the display still shows the last reading? The answer is yes, unfortunately. Parking the camper, then going out somewhere means the display will still show the last pressures even when you're MILES away from the sensors.... with no alarm saying you're out of range. *Unless the spare tire alarm went off, in that case as soon as you open the door to get in, the display wakes up, and starts beeping because the spare signal was lost but all the other tires show the last values. Confusing. So as a better test I shut off the display then turned it back on while driving. On the car trailer the front axle showed up first followed by the rear, it took a hair longer to show everything but still reasonable I suppose. The camper is a different story. On powering up the front axle sensors would show eventually then a few miles later one of the rear popped up, by the time I arrived all 4 were showing, I didn't notice when the last tire showed up and don't think the alarm for the spare came back on. Overall I feel the Shrader add on kit is worth it if you know these limitations.

### ⭐⭐⭐⭐⭐ OEM quality sensors, and a great on-dash interface
*by C***Y on September 10, 2024*

I've actually purchased and installed two of these kits now. The first was for my Subaru that didn't have any sort of factory TPMS, and the second was for my wife's Toyota Sienna that simply had an "idiot light" warning that one of the tires was under pressure. (but not which wheel, or what the pressure was.) Things I liked: 1) The in-wheel sensors are Schrader oem quality. No offbrand, questionable reliability junk. I'm confident these sensors will last 5-10 years without trouble. 2) The display is solar powered, so no wiring issues. 3) The sensors are Schrader 29015, which are used on many of the Chevy / GMC vehicles from 2018-2021. This is an important distinction over many of the other budget TPMS kits that use proprietary, non-standard sensor formats. 4) Because the sensors are standard, I have bought compatible sensors for both sets of our vehicles winter snow tires. (Mounted on extra rims.) Re-learning the new sensors is pretty straight forward. (Put the display unit in learning mode, then deflate each tire in turn enough to trigger the sensor -- usually 2-3 psi will do it.)

## Frequently Bought Together

- SCHRADER TPMS Retrofit Kit for Passenger Cars and Light Truck
- Schrader 34000 Aluminum Clamp-in Style Valve for TPMS Snap-in Sensor, 25 Count (Pack of 1)

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-03*