Quicksilver 864293A02 Exhaust Manifold Conversion Kit MerCruiser 4.3L V6

The Quicksilver 864293A02 Exhaust Manifold Conversion Kit is an OEM Mercury Marine solution designed to convert MerCruiser MCM 4.3L V6 engines from the discontinued one-piece exhaust manifold/riser design to the modern two-piece exhaust manifold and riser system. Because the original one-piece manifolds are no longer available, this conversion kit provides the complete hardware necessary to bring affected engines up to the current two-piece configuration.

Key Features:

• Converts 1996 and newer MCM 4.3L V6 engines from 1-piece to 2-piece exhaust manifold system
• OEM Quicksilver part — a Mercury Marine brand engineered for precise fit and reliability
• Includes all rubber hoses, stainless steel clamps, gaskets, and fasteners needed for installation
• Stainless steel clamps resist corrosion in marine environments
• Backed by Mercury Marine's 1-year factory warranty against defects in materials and workmanship

Kit Contents:

• 2x Upper rubber tube (elbow to intermediate elbow) — 32-44358001
• 2x Lower rubber tube for original Y-pipe — 32-807458T
• 2x Lower rubber tube for new-style Y-pipe
• 8x Stainless steel clamps — 54-815504372
• 2x Gasket, manifold to riser — 27-863726
• 12x Manifold-to-head bolt — 10-53728
• 4x 32mm screw — 10-58640
• 4x Split washer — 13-41471
• 8x Riser bolt — 10-43749
• 3x 19mm screw/pressure rod — 10-65746
• 3x Nylon spacer — 23-806981
• 3x Stainless steel washer — 12-35462
• 3x Hex nut — 11-64015

Important Note: Y-pipe is not included and must be purchased separately if replacement is needed. This kit converts one engine. Refer to Mercury Marine Service Bulletin 2005-12 for complete installation guidance.