The Industry's only CERAMIC COATED & POWDER COATED direct replacement exhaust products. For late model inboard/outboards. Replaces Mercruiser # 44354, 807914 and 807988 on 4.3L V6, 5.0L.5.7L V8, and 454/502 big block V8 engines. Includes mounting kit with gaskets and fasteners. Technical Information.... Product Diagram....

NOTE: If your engine is equipped with the dry joint exhaust system (V8 serial #0m600000 and above, V6 serial #0m615000 and above), THIS IS THE WRONG RISER; you must purchase the Mercruiser OEM riser.