Compatibility:
Predator 301cc 11hp
420cc 13hp 670cc 22hp
Honda GX270, GX340, GX390.

Flange is CNC cut from heavy 1/4" steel plate to prevent warping,

outlet pipe is 1" NPT pipe thread that matches exhaust port perfectly for maximum flow.

2" Hole-to-Hole distance (Center).
Great for Generators or other applications where a custom exhaust is needed...
(THIS EXHASUST ADAPTOR DOES NOT WORK ON DUROMAX ENGINE 16HP OR 18 HP)