It's the Law

Backfire Flame Control Devices

Backfire flame arrestor

Backfire flame control devices ensure that any engine backfire is dispersed into the atmosphere and substantially reduce the chance of explosion or fire.

All motorboats built after April 1940 with inboard-mounted gasoline engines (this includes inboards, inboard-outboards, and airboats) must have a backfire flame control device mounted securely to each carburetor.

Backfire flame control devices must be:

  • In good and serviceable condition
  • USCG–approved (must comply with SAE J-1928 or UL 1111 standards)