Shopping Cart

Your cart is empty.

Your cart is empty.

Top Dead Center Tool 8016MRG TDC Whistle – Universal Top Dead Center Indicator with 14mm/18mm Spark Plug Ports – Top Dead Center Whistle for Distributor Installation, Timing & Valve Adjustment

4.7 (4) Write Review
Free shipping on orders over $29.99

$23.95

$ 10 .99 $10.99

In Stock
  • Precise TDC Detection: The TDC whistle produces a clear, audible sound as the piston approaches top dead center (TDC) during the compression stroke—stopping right when TDC is reached. This makes it easy to pinpoint TDC for ignition timing, valve adjustments, and cylinder diagnostics
  • Compatible with 14mm & 18mm Spark Plug Ports: Top dead center tool features a dual-size threaded fitting that easily installs into both 14mm and 18mm spark plug holes—compatible with most gasoline engines. Not for use on diesel engines
  • Versatile Applications for Engine Work: Top dead center whistle perfect for distributor installation, individual cylinder valve setting, timing belt or chain inspection, and cylinder leak down testing—essential for mechanics and DIYers alike
  • Quick, Tool-Free Installation: No tools required—just hand-thread the TDC whistle into the spark plug port and you're ready to go. The 27-inch overall length makes it easy to position and hear, even in tight engine bays
  • Audible Compression Stroke Indicator: The TDC whistle tool makes it easy to detect the compression stroke by ear—no need to visually inspect pistons or rely solely on timing marks. MainUseool TDC compression indicator perfect for both beginners and professional mechanics


Product Description

Whistle Thread Top Dead Center Indicator Center Top Dead Whistler
top dead center tool tdc whistle top dead center indicator
tdc whistle tool top dead center indicator 8016MRG Tdc Whistle
top dead center tool tdc tool top dead center whistle top dead center indicator

  • tdc tool fits most gasoline engines with 14mm or 18mm threaded spark plug ports. It’s compatible with cars, trucks, motorcycles, lawnmowers, and other small engines that use spark plugs. Not for use on diesel engines.

  • As you rotate the engine, the whistle begins to sound during the compression stroke. When the piston reaches Top Dead Center (TDC), the airflow stops—and so does the whistle. This gives you an audible cue for precise timing work.

  • No tools required! Simply hand-thread the whistle into the spark plug hole and you're ready to go. It's designed for quick installation and easy operation—even in tight engine bays.

  • It’s perfect for both beginners and seasoned mechanics. The audible whistle makes it easy to identify compression stroke without removing valve covers or relying on hard-to-see timing marks.

  • Absolutely. This top dead center tool is perfect for valve lash adjustments, timing belt/chain inspection, distributor installation, and even cylinder leak-down testing. It’s a versatile tool for any engine maintenance task requiring TDC alignment.


Aj Mannina
Reviewed in the United States on June 3, 2025
so much easier to use than the other makes,others have to hold in while turning engine by hand this one just screw in like a comp.tester.then listen for the whistle to stop
6gyupsal
Reviewed in the United States on June 3, 2025
I seldom adjust my valves, but locating TDC are difficult to see on my motor. The whistle solved that problem and it is easy to tell when you reach TDC.
Aiden Sutherland
Reviewed in the United States on June 3, 2025
it works very well whistles when on the compression stroke at top dead center thank you very much
Aiden
Reviewed in the United States on June 3, 2025
Very useful to locate approximate Top Dead Center for cylinder leak testing.
Recommended Products
Spark Plug Tester, Adjustable Car Ignition Coil Pack System on Plug Spark Circuit Automotive Diagnostic Tester Tool.

$7.99

$ 3 .99 $3.99

4.9
Select Option
CZC AUTO Spark Plug Gap Tool Universal with 32 Blades Steel Feeler Gauge, Compatible with Most Standard 10mm 12mm 14mm 16mm Thread Spark Plugs, Black

$15.99

$ 7 .99 $7.99

4.3
Select Option
Motion Pro Spark Plug Gap Tool

$20.49

$ 9 .99 $9.99

5.0
Select Option
Spark Plug Tester Automotive 5-Hole Height Adjustable Engine Ignition Coil Tester 0~9999rpm Adjustable Frequency Car Spark Plugs Gap Tool with Digital Display & Indicator Spark Tester for 12V Vehicles

$49.99

$ 21 .99 $21.99

4.6
Select Option
Upgraded 5 Terminals Ignition Starter Switch for 313000001-313999999 Toro 74631 20240531 TimeCutter SS 5000 Riding Mower

$16.99

$ 7 .99 $7.99

5.0
Select Option
uxcell 6 Pcs Ignition Spark Plug Spanner Set Dual-Ended Wrench Socket

$8.99

$ 4 .99 $4.99

4.6
Select Option
Dual-Spark Plug Tester - 0-6000 RPM for Tractors/Vintage Cars/RVs, Dark Mode & 12V, Portable Automotive Engine Ignition Coil Tester, Plug & Play – Expert Testing Without The Hassle

$16.95

$ 6 .99 $6.99

4.7
Select Option
Petrol Engine Cylinder Compression Tester Kit and Spark Plug Tester Tool Fit for Automotive Car Lawnmower Truck Chainsaw Motorcycle Boat Petrol Gas Engine Diagnostic Compression Tester Kit (9 Pcs)

$25.66

$ 10 .99 $10.99

5.0
Select Option