Exhaust protector valve mounts on the outside of 3 in. exhaust tip to prevent backflow of water into the exhaust.
3 in. Exhaust Flapper With Clamp | Sierra 18-4456
- For 3 in. diameter exhaust thru hulls
- Prevents backflow of water into exhaust system
- Stainless steel clamp included
- Designed to mount on the outside of exhaust tips
- Replaces Mercury 34765A1, 34765A2
- Replaces OMC/Johnson/Evinrude 509494
- Replaces Mallory 9-44000
