The Flexible Whistle Alert screws into a spark plug hole to quickly indicate compression stroke and can be placed in hard-to-reach places where the rigid version would be difficult or impossible to place.
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
Made in the USA; Lifetime Warranty
Also available: #7882 Whistle Alert (Rigid)
Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov