Why Getting the Right TPMS Sensor Matters for Your IM
IM vehicles—part of the SAIC Motor group alongside MG, Rising, and Roewe—use a dedicated TPMS system that operates on a 433MHz frequency. If you slap in a universal 315MHz sensor or a mismatched clone, you’ll get a flashing tire pressure light, no reading on the dash, or worse, a system that fails to alert you of a slow leak.
The BH-Sens BL-ST-021 sensor (SKU: BL-ST-021) is a direct replacement for IM cars, covering OE numbers 10290600, 10625492, 10718213, and 11205327. But before you order, here’s what you must check.
What to Check Before Ordering a TPMS Sensor for Your IM
1. Frequency: 433MHz Is the Standard for IM
IM vehicles do not use 315MHz, 868MHz, or other frequencies common on older European or Japanese cars. Confirm your vehicle’s system frequency by:
- Checking the original sensor stamp (usually on the metal valve stem).
- Looking up your IM model year in the owner’s manual under “Tire Pressure Monitoring System” specifications.
- If you’re replacing a failed sensor, the original part will have a frequency mark like “433” or “433.92MHz.”
2. OE Fitment Numbers Are Not Optional
The BH-Sens BL-ST-021 covers OE# 10290600, 10625492, 10718213, and 11205327. These numbers are cross-referenced for IM, MG, Rising, and Roewe models. If your original sensor shows a different OE number, do not assume compatibility—cross-check with a parts catalog or contact the supplier with a photo of the old sensor.
3. Clamp-in vs. Snap-in: IM Uses Clamp-in
IM TPMS sensors are clamp-in type. They use a metal valve stem that screws into the wheel with a nut. Snap-in sensors (rubber stems) are not compatible and will leak air or break during installation. The BL-ST-021 is clamp-in, so it fits correctly.
4. Pre-programmed vs. Programmable
The BL-ST-021 is pre-programmed at the factory with the ID, frequency, and protocol for IM vehicles. This means you install it, and the car learns it automatically after a short drive (usually 10–20 minutes at 30+ km/h). If you’re buying for a fleet or workshop, pre-programmed sensors save time—no need for a TPMS tool to write IDs.
Note: Some IM models (especially newer 2023+ EVs) may require a relearn procedure using a TPMS tool. Check your vehicle’s service manual.
5. Valve Core and Torque Specs
Use a new valve core each time (included with most BH-Sens sensors). Tighten the clamp nut to 4–6 Nm (check your wheel manufacturer spec). Over-torquing strips the aluminum valve stem; under-torquing causes air leaks.
B2B Bulk Buying Notes: What Wholesalers Need to Know
If you’re sourcing BH-Sens BL-ST-021 sensors for a workshop, distributor, or fleet, here’s what to verify with your Chinese supplier:
| Factor | What to Check | Why It Matters |
|---|---|---|
| Batch Consistency | Ask for the production date code and firmware version. | BH-Sens occasionally updates internal firmware for newer IM models. Mixed batches may cause one sensor to fail pairing. |
| Mold Date | Look at the sensor housing mold mark (e.g., “2023.03”). | Older mold tooling can have slight dimensional differences—rare, but happens. |
| Packaging | Individual blister packs vs. bulk loose. | Blister packs protect the valve stem from bending during shipping. Loose sensors risk damage. |
| OE Number Coverage | Confirm the supplier’s cross-reference list includes 10290600, 10625492, 10718213, 11205327. | Some cheaper clones only cover 2 of 4 OE numbers, leaving you with returns. |
| Lead Time | 2–4 weeks for BH-Sens factory orders. | If you need urgent stock, ask if the supplier has pre-stocked units in a local warehouse. |
| MOQ | Minimum order quantity for the BL-ST-021. | Many Chinese suppliers require 50–100 pieces for bulk pricing. Negotiate sample orders first. |
B2B tip: Request a compatibility test report for IM vehicles (especially the IM L6 and IM LS6 series) before placing a large order. Some 2024 models have a revised TPMS module that only accepts sensors with a specific protocol version.
Fitment Table: IM Models Compatible with BL-ST-021
The following IM models are confirmed compatible with the BH-Sens BL-ST-021 sensor. Always double-check your VIN with a parts catalog.
| IM Model | Approximate Years | Notes |
|---|---|---|
| IM L6 | 2023–present | 433MHz, clamp-in. Pre-programmed works plug-and-play. |
| IM LS6 | 2023–present | Same system as L6. Some early units needed relearn. |
| IM L7 | 2022–2024 | Compatible. Check OE number on original sensor. |
| IM LS7 | 2022–present | Uses same BH-Sens protocol. |
| MG (selected models) | 2020–present | MG HS, MG ZS, MG5 EV with 433MHz TPMS. |
| Rising Auto (R7, F7) | 2022–present | Rising uses BH-Sens as OEM. Direct fit. |
| Roewe (i6, i5, RX5) | 2021–present | Select models with TPMS. Cross-check OE number. |
Installation Tips for IM Owners
- No need to remove the tire completely if you have a tire machine that can break the bead near the valve stem. The clamp-in sensor can be swapped from the inside.
- After installation, drive the car at 35–50 km/h for 15 minutes to let the TPMS module learn the new sensor ID. If the light stays on, use a TPMS tool (like Autel TS508 or Bartec) to trigger a relearn.
- If you’re replacing just one sensor, the other three OEM sensors will still work. The system is tolerant of mixed batches as long as all sensors are 433MHz and clamp-in.
Why BH-Sens (Baolong Technology) Is a Safe Choice
BH-Sens is the aftermarket brand of Baolong Technology, one of the largest TPMS manufacturers in China. They supply OE parts directly to SAIC Motor (IM, MG, Roewe), so the BL-ST-021 is essentially an OEM replacement without the dealer markup. The sensor uses a sealed battery rated for 5–7 years, and the valve stem is stainless steel with a brass core.
Recommended Part: BH-Sens BL-ST-021 for Your IM
For a direct, no-hassle replacement, the BL-ST-021 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Im, MG, Rising, Roewe | OE# 10290600, 10625492, 10718213 covers all major IM fitments from 2022 onward. It comes pre-programmed, clamp-in, and matches the 433MHz frequency. For B2B buyers, this SKU has consistent OE coverage across 59 IM and MG models, reducing the risk of returns due to incompatible firmware.
FAQ
Can I use a universal programmable sensor for my IM instead of the BH-Sens BL-ST-021?
Yes, but only if the programmable sensor supports 433MHz and the IM-specific protocol. Many universal sensors (like Autel MX-Sensor or Schrader EZ-sensor) require you to program the ID with a tool. The BL-ST-021 is pre-programmed, so you save that step. If you already have a TPMS tool and prefer a universal sensor, make sure it lists OE# 10290600 as compatible.
How do I know if my IM vehicle needs a TPMS relearn after replacing a sensor?
Most IM models from 2022 onward use an auto-learn system—just drive above 30 km/h for 10–20 minutes. If the TPMS light blinks for 60 seconds then stays solid, it did not learn the new sensor. Use a TPMS tool to force a relearn. Check your manual: some IM EVs (like the L6) require a specific procedure involving the infotainment screen.
What is the battery life of the BH-Sens BL-ST-021 sensor?
The battery is rated for 5–7 years under normal driving conditions (average 2 hours per day). In hot climates or with heavy city driving, expect closer to 5 years. When the battery dies, you cannot replace it—you must buy a new sensor. The sensor will send a low-battery warning 2–3 months before failure, so you have time to order a replacement.
Can I buy the BL-ST-021 in bulk without individual packaging?
Yes, but it’s not recommended. Sensors without blister packs often arrive with bent valve stems or scratched housings, which can cause air leaks. If you need bulk pricing, ask your supplier for half-blister packs (two sensors per blister) or foam-lined trays. Never accept loose sensors in a poly bag for B2B orders—the failure rate goes up significantly.