Genuine Briggs & Stratton Spark Plug

• Part #591868

• Replaces Pt# 799876

• For use in ALL Quantum Series 625, 675, and 725 Engines.
  
• Date code stamped on shroud above the muffler of right above the spark plug.

• This spark plug will be pre-set to .020″ gap, which is correct for Phase 3 engines (after date code 110630xx). The spark plug must be adjusted to .030″ gap for use in Phase 1 / Phase 2 engines (before date code 110630xx).

• This spark plug allows for a wider range of operating conditions, which allows for its use in older and current production Quantum engines.

• If you are unsure, please contact us us with your model andserial number and we will be happy to help.
• Contact us

This is an original equipment spark plug.