This manifold is for a freshwater application of below engine.

Aluminum ETX one piece manifold and riser used in Indmar Marine Engines 5.7L  and 6.2L 383 GM applications.
Fits Indmar Vortec 5.7L Monsoon and 6.2L Hammerhead engines.

Port side only (left)
Starboard part # 531300

Mounting kit 495095 (Sold Separately)