The Real Cost Difference on FRIDAY Vehicles
FRIDAY vehicles (the popular compact SUV and sedan lineup from Dongfeng’s joint venture) use a standardized 433MHz TPMS system across most 2015-2023 models. The factory sensor, carrying OE numbers CM5B3685020, CM5B3685020S, or SX5G3685020B, typically retails at dealerships for $65-95 per sensor. A comparable aftermarket unit – like the BH-Sens BL-ST-052 – runs $28-38.
That’s not pocket change when you need all four replaced. But price alone isn’t the full story. Let’s break down where the money goes.
OEM Sensors: What You Actually Pay For
Pros
- Exact OE fitment – no compatibility questions
- Factory warranty coverage (typically 12 months on parts)
- Dealer programming included in labor cost
- No cross-referencing needed – hand the parts counter your VIN
Cons
- 3-4x price premium for identical frequency and signal output
- Same failure rate as aftermarket (both use similar Chinese-sourced internals)
- Supply chain delays – OEM sensors are often backordered for FRIDAY models
- No performance advantage – the TPMS system only sees a 433MHz signal, not a brand name
Aftermarket Sensors: The Smart Shopper’s View
The BH-Sens BL-ST-052 is manufactured by Baolong Technology, one of the world’s largest TPMS sensor OEMs (they supply to VW, GM, and several Chinese automakers including Dongfeng). This isn’t a no-name generic – it’s the same factory that makes many OE sensors, sold without the dealership markup.
Key Specs at a Glance
| Feature | OEM Sensor | BH-Sens BL-ST-052 |
|---|---|---|
| Frequency | 433MHz | 433MHz |
| Programming | Requires dealer tool | Pre-programmed (clone of OE) |
| Valve Type | Clamp-in | Clamp-in (same design) |
| OE Cross-Reference | CM5B3685020 / SX5G3685020B | Direct match |
| Typical Price (each) | $65-95 | $28-38 |
| Warranty | 12 months (dealer) | 24 months (BH-Sens) |
The pre-programmed nature of the BL-ST-052 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Forthing | OE# CM5B3685020, CM5B3685020S, SX5G3685020B is a major time-saver. You install it, drive the car for 5-10 minutes, and the system auto-learns the sensor. No separate programming session or special tool required – a huge advantage for DIYers.
When OEM Is Actually Worth It
Three scenarios where you should buy the factory sensor:
- Warranty still active – If your FRIDAY is under 3 years/36,000 miles, use OEM to avoid any claim disputes.
- Insurance claim – Some insurers require OEM parts for TPMS-related damage repairs.
- You want zero doubt – If the 10% chance of a compatibility quibble at a small shop bothers you, pay the premium.
For everyone else – and that’s 90% of FRIDAY owners – aftermarket makes better financial sense.
The Hidden Cost of “Cheap” Aftermarket Sensors
Not all aftermarket TPMS sensors are equal. Avoid $15-20 no-name units from marketplace sellers – they often use cheap batteries that fail within 18 months, and the rubber seals degrade quickly. Stick with sensors from established manufacturers like BH-Sens (Baolong), Schrader, or VDO. The BL-ST-052 uses a lithium battery rated for 5-7 years, matching OEM lifespan.
Installation Tips for FRIDAY Models
- All FRIDAY models (Forthing, Jingyi X5/X6, SX5) use clamp-in sensors with a 12mm hex nut – standard installation.
- Torque the sensor nut to 35-40 in-lbs (check your manual). Over-tightening cracks the housing.
- After installation, drive at 20+ mph for 5 minutes. The TPMS light should turn off automatically if the sensor is pre-programmed correctly.
- If the light stays on, verify the sensor ID matches the OE number: CM5B3685020, CM5B3685020B, or SX5G3685020B.
Recommended Part
For FRIDAY owners needing a reliable, cost-effective replacement, the BL-ST-052 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Forthing | OE# CM5B3685020, CM5B3685020S, SX5G3685020B is a direct fit that matches all factory specs. Baolong’s track record in the OE supply chain means you’re getting factory-grade quality without the dealership price. Buy a set of four, install them yourself, and you’ll save around $200-240 compared to a dealer replacement.
FAQ
Will a pre-programmed aftermarket sensor work on my 2018 FRIDAY Forthing?
Yes, if your vehicle uses a 433MHz TPMS system. The BL-ST-052 is pre-programmed with the OE ID range for FRIDAY models, so it auto-pairs within minutes of driving. For 2015-2023 FRIDAY vehicles with factory TPMS, this sensor is plug-and-play.
How long do BH-Sens TPMS sensors last compared to OEM?
Both use lithium manganese dioxide batteries rated for 5-7 years of normal driving. BH-Sens sensors typically match or exceed OEM battery life because they use the same cell suppliers (e.g., Panasonic or Murata). The 24-month warranty from BH-Sens is actually double the standard OEM parts warranty.
Can I mix OEM and aftermarket sensors on the same FRIDAY?
Technically yes – the car only reads the 433MHz signal, not the brand. But for consistent battery life and signal strength, replace all four at once. Mixing old OEM sensors (with 4+ years of use) with new aftermarket units can lead to uneven battery depletion warnings.
What if the light doesn’t turn off after installing a BH-Sens sensor?
First, verify the sensor was installed with the correct torque (35-40 in-lbs). Then drive at steady highway speed (40+ mph) for 10 minutes. If the light persists, check that the sensor ID matches your vehicle’s OE range – the BL-ST-052 covers CM5B3685020, CM5B3685020S, and SX5G3685020B. If none of these match your original sensor ID, you may need a programmable variant. Contact BH-Sens support for a free ID check.