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popularUncleRobot | Staff posted Jul 30, 2026 4:27 PM

ANCEL SP20 Dual Port Spark Plug Tester for 12V Gas Engines $17.99 + Free Shipping w/ Prime

$18

$38

52% off
Amazon
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Deal Details
Toptool US via Amazon [amazon.com] has ANCEL SP20 Dual Port Spark Plug Tester for 12V Gas Engines on sale for $17.99. Shipping is free w/ Prime or on orders $35+.

Note: Not compatible with very short spark plugs. Check spark plug size before purchase.

Production Description from Store:
  • Model: ANCEL SP20
  • Compatible voltage: 12V gasoline engines
  • Max insulator diameter: 13mm
  • Power source: Corded electric
  • Compatible devices: Cars, motorcycles, ATVs, lawn mowers, generators, and other 12V gas engine equipment
  • Dual-socket design allows simultaneous testing of two spark plugs side by side
  • One-button operation — insert plugs, close cover, press button, observe spark
  • Clear transparent safety cover isolates high-voltage test area during use
  • Visually identifies weak, aging, or faulty spark plugs before replacing parts
  • No RPM adjustment or complicated setup required
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Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Toptool US via Amazon [amazon.com] has ANCEL SP20 Dual Port Spark Plug Tester for 12V Gas Engines on sale for $17.99. Shipping is free w/ Prime or on orders $35+.

Note: Not compatible with very short spark plugs. Check spark plug size before purchase.

Production Description from Store:
  • Model: ANCEL SP20
  • Compatible voltage: 12V gasoline engines
  • Max insulator diameter: 13mm
  • Power source: Corded electric
  • Compatible devices: Cars, motorcycles, ATVs, lawn mowers, generators, and other 12V gas engine equipment
  • Dual-socket design allows simultaneous testing of two spark plugs side by side
  • One-button operation — insert plugs, close cover, press button, observe spark
  • Clear transparent safety cover isolates high-voltage test area during use
  • Visually identifies weak, aging, or faulty spark plugs before replacing parts
  • No RPM adjustment or complicated setup required
Don't have Amazon Prime?

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4 Comments

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Yesterday 11:46 PM
2.2K Comments
Joined Sep 2014
1-6Yesterday 11:46 PM
2.2K Comments
I didn't know this was a thing.
Today 12:18 AM
312 Comments
Joined Jan 2016
MineNdesignToday 12:18 AM
312 Comments
Buy their $1100 3.3 star scanner and get this for free! Lol
Pro
Today 12:40 AM
2.8K Comments
Joined Nov 2010
TACO_Trader
Pro
Today 12:40 AM
2.8K Comments
Would be cool if you could just leave it on.
Pro
Today 12:43 AM
2.8K Comments
Joined Nov 2010
TACO_Trader
Pro
Today 12:43 AM
2.8K Comments
Two spark plugs. One for each side. /oo\

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