HUAREW Top Dead Center Tool
Compatible for most vehicles engine replace number: 8016MRG 33650 7880

TDC Compatible with 14mm & 18mm Spark Plug Ports
Top Dead Center Tool fits most gasoline engines with 14mm or 18mm threaded spark plug ports.
It's compatible with cars,trucks, motorycles, lawnmowers, and other small engines that use spark plugs.
NOTE: Not for use on diesel engines!

Easy to Use
1. Remove spark plug from the cylinder you're working on
2. Hand-thread the whistle into the spark plug hole
3. Rotate crankshaft in normal direction
4. Listen whistle starts during compression stroke
5. Stop rotating when whistle stops

Precise Positioning
Tool whistles can help you accurately determine the highest point of the piston, which is crucial for adjusting valve timing, ignition timing, etc. to ensure that the engine can run at its best

Safe and Reliable
Indicator whistle does not require electrical power, avoiding the risk of electrical failure, it is easily removed when not in use without causing damage to the engine

Improve Efficiency
Indicator whistles on the compression stroke and stops whistling at approximately top dead center, providing a quick method to confirm piston position, reducing guesswork and time during adjustments and diagnostics