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Topfactory Knock Sensor: Engine performance optimization

(2 reviews)
Knock Sensor — Detonation, Topfactory
Available Options
2 pieces Black
2 pieces Black
Joom
$38.16
Available to order
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.
  • Compatible with multiple vehicle brands
  • Easy installation process
  • Durable construction
  • Accurate knock detection
  • Engine performance optimization

General specs

  • Brand: Topfactory
  • Seller: Joom
  • 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
$38.16
Last price update: 8/24/25
Available to order

Shipping options

Delivery to United States
Unavailable

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Model 77930-SNA-A320 30530-PPL-A01 10456520 05033307AC
Color
Rating
(2)
(2)
(2)
(2)
(2)
(2)
Price $38.16 $59.86 $17.88 $47.84 $23.50 $22.15
Seller Joom Joom Joom Joom Joom Joom
Update August 28, 2025 August 17, 2025 August 28, 2025 August 28, 2025 August 28, 2025 August 28, 2025
Compatibility Buick, Chevy, Cadillac, GMC, Pontiac, Hummer Honda Civic 2006-2011 Honda Element, Honda Accord, Honda CR-V, Acura RDX, Acura RSX GM Gen III LS, LS1, LR4, LQ4 V8 engines Chevrolet Chrysler, Dodge, Fiat, Jeep, Lancia
Installation Direct replacement, Easy to install Easy to install Requires basic tools
Knock Sensor — Detonation, Topfactory

Knock Sensor

$38.16

Reviews

EN (1) RU (1)
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(2 reviews)
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Emily Williams
Emily W. GB Nottingham
September 4, 2025
Decision:

I bought this as a gift for my husband since he's into cars and we have multiple kids to ferry around so keeping our old car running is key it started with a rough idle and power dips making drives stressful I read about this part online and thought it might help the swap was straightforward took me maybe twenty minutes and at first the car felt smoother acceleration improved and no more weird noises but after a week the issues crept back a bit not completely fixed it seems like a temporary fix not top-notch but for the cost it's decent I'd say it's good for a quick band-aid but might not last long overall a bit disappointed but it did help for a short while

  • Pros: Delivery was quick and it was a direct fit for my car no tools needed just swapped it in easily saved me a trip to the mechanic and the price was super low which is great for my budget
  • Cons: It seems to work okay but my car still has a bit of a hesitation sometimes and the check engine light came back after a few days not as reliable as I hoped and the packaging was basic nothing special
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