Skyfree 392502G100 Knock Sensor: Compatible with Hyundai and Kia vehicles
Available Options
That subtle, unsettling rattle from under the hood? It's your engine knocking, and this little sensor is the first line of defense. The knock sensor is a critical piece of automotive tech that sniffs out engine pinging—those uneven fuel burns in the cylinders that can sap performance, spike emissions, and slowly chew up your engine. It listens for telltale vibrations and shoots signals to the engine control unit, which then tweaks ignition timing and fuel mix on the fly to keep things smooth.
Tailored for workhorses like the Hyundai Santa Fe, Kia Sportage, and Kia Sorento, this unit is a plug-and-play swap for OEM part 392502G100. Slap it in, and you're not just silencing that annoying rattle; you're boosting fuel economy, sharpening throttle response, and giving your engine a longer lease on life. Think of it as a tune-up in a box: install it during routine service or at the first hint of trouble—like a check engine light or that classic knocking soundtrack—and drive on with confidence.
- Replaces OEM part 392502G100
- Detects engine knocking for performance
- Easy installation process
- Durable construction for reliability
- Compatible with Hyundai and Kia vehicles
General specs
- Brand: Skyfree
- Model: 392502G100
- Seller: Joom
- Compatibility: Hyundai Santa Fe, Kia Sportage, Kia Sorento
- Part Number: 392502G100
- Function: Detects engine knocking
- Installation: Direct replacement, Easy to install
- First listed by seller: 8/24/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
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Skyfree 392502G100 Compatible with Hyundai and Kia vehicles
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| Brand | Skyfree | Tautoparts | FYUU-autoparts | Skyfree | Skyfree | loverapple |
| Model | 392502G100 | 392502G100 | 392502G100 | 3918023500 | 3935023700 | 392502G000 |
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| Price | $28.47 | $23.80 | $23.80 | $15.97 | $17.54 | $23.03 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 28, 2025 | August 28, 2025 | August 28, 2025 | August 28, 2025 | August 28, 2025 | August 28, 2025 |
| Compatibility | Hyundai Santa Fe, Kia Sportage, Kia Sorento | Hyundai Santa Fe, Kia Sportage, Kia Sorento | Hyundai Santa Fe, Kia Sportage, Kia Sorento | Hyundai Elantra, TIBURON, TUCSON, KIA | Hyundai Elantra 1.8L/2.0L 2004-2014, Kia | Hyundai Santa Fe, Hyundai Tucson, Kia Forte, Kia Sorento, Kia Sportage |
Knock Sensor
Sophia G.
Denver, CO
September 3, 2025
As a pragmatist, I always do my research before buying car parts, and this Skyfree sensor seemed like a good match for my Kia. I hoped it would be a simple fix for that annoying engine sound, and in reality, it helped a fair amount. The installation was straightforward—no special tools needed, just a basic wrench and some patience. After putting it in, the knocking reduced significantly, and my car feels peppier on the hills here. But it's not perfect; on chilly mornings, I still hear a faint rattle, which makes me wonder if it's catching everything. Overall, it's a decent upgrade that improved things, but I'm keeping an eye on it. If you're dealing with similar issues, it might be worth a try, but don't expect miracles. 🚗
- Pros: It was fairly easy to install, just plugging it in like the old one, and it did quiet down that rattling noise under the hood right away. I noticed a smoother ride and better gas mileage, which is a nice bonus for my drives around Denver.
- Cons: It didn't completely eliminate the knocking in all conditions, especially when the engine was cold, and I had to double-check the connection a few times to make sure it was seated properly. For the price, I expected a bit more reliability.