Description
No More Burning Fingers and Hands! Just Listen for the Whistle to Find the TDC Compression Stroke.
The Whistle Alert (Rigid) screws into a spark plug hole to quickly indicate compression stroke.
Feature and Benefits:
- Eliminates the need for an extra hand
- After installation, your hands are free to complete the job
- Excellent for use on deep, recessed spark plug threads
- Flexible model also available (#7894)
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