Topfactory Knock Sensor: Engine performance optimization
Engine knocking is the automotive equivalent of a bad cough—it signals trouble deep within. The knock sensor is the engine's stethoscope, listening for that telltale pinging caused by uneven fuel combustion. When it detects trouble, it sends an alert to the engine control unit (ECU), which tweaks the ignition timing on the fly. This quick fix prevents damage, boosts efficiency, and keeps your ride humming smoothly—saving you money on fuel, cutting emissions, and prolonging engine life.
This little gadget is a perfect fit for a range of General Motors workhorses, from Buicks and Chevys to Cadillacs, GMCs, Pontiacs, and even Hummers. It's a direct swap for OEM codes like 12589867 and 12601822, making upgrades a breeze. In practice, slapping in a new sensor can banish woes like sluggish acceleration, power dips, or that annoying check engine light. Think of it as a tune-up in a box: regular swaps ward off pricey overhauls and keep your car purring like it just rolled off the lot.
Features
- Compatible with multiple vehicle brands
- Easy installation process
- Durable construction
- Accurate knock detection
- Engine performance optimization
General specs
- Brand: Topfactory
- Seller: Joom
- ID: 689c4760a67f5101f96af2ba
- Compatibility: Buick, Chevy, Cadillac, GMC, Pontiac, Hummer
- Part Numbers: 12589867, 12601822
- Quantity: 2 pieces
- First listed by seller: 8/24/25
If you are interested in more details, you can find full information on the seller's page.
View on seller's site
#publicidad
$45.96
Last price update: 11/15/25
Out of stock
Price History for seller Joom
| Date | Price |
|---|---|
| 11/15/25 | $45.96 |
| 8/24/25 | $41.34 |
Shipping options
Delivery to 
United States
United States
Unavailable
Comparison with similar products
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| Brand | Topfactory | KONNWEI | Mi | |||
| Model | MAXOBD | |||||
| Color | ||||||
| Rating |
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| Price | $45.96 | $17.98 | $13.41 | $56.43 | $24.17 | $19.99 |
| Seller | Joom | Gshopper | Sunsky | Gshopper | Gshopper | Gshopper |
| Update | November 14, 2025 | July 25, 2024 | November 29, 2025 | July 25, 2024 | July 25, 2024 | July 25, 2024 |
| Compatibility | Buick, Chevy, Cadillac, GMC, Pontiac, Hummer | Android, iOS | Smart home systems | |||
| Installation | Easy | Wireless | Easy, tool-free | |||
Knock Sensor
$45.96
