Exhaust Bellows Sierra 18-2748
- Aftermarket 4 in. upper exhaust tube connects exhaust riser to exhaust elbow pipe on various Mercruiser marine engines.
- 4 in. ID upper exhaust tube
- 4 1/4 in. long
- Replaces Mercury 32-44348, 32-44348T, and 31-44348001
- Replaces OMC/Johnson/Evinrude 775485
- Replaces Mallory 9-72805