Cummins 3965690 Marine Wet Exhaust Elbow / Mixing Riser for QSM11 - Used

Application: Cummins Marine QSM11 wet exhaust elbow / mixing riser, OEM part number 3965690 (SMX-built stainless fabricated assembly). Integrated seawater shower ring injects raw water into the exhaust stream for cooling and quiet wet-exhaust discharge. Condition: Used take-off. Bright stainless exterior with expected heat discoloration and light staining; interior shows normal carbon and light oxidation. No visible cracks or weld failures observed. Will be drained and ports capped for shipment. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.