FASWORX Oil Tank Reservoir Assembly for Mercury Mariner 3.0L V6 2-Stroke Outboard 200HP 225HP 250HP 300HP, Replaces 8M0119508, 8M0064073, 830889A1, 818456A1, Compatible with EFI & OptiMax DFI Engines

Professional-Grade Oil System Restoration by FASWORX Keep your high-performance outboard running smoothly with the FASWORX Oil Reservoir Assembly. This aftermarket tank is precision-engineered for the Mercury 3.0L V6 platform, providing a reliable housing for your engine's internal oil supply. Whether you are running an EFI workhorse or a high-output OptiMax DFI, this reservoir ensures your oil injection system maintains the necessary pressure and fluid levels for peak performance. Technical Excellence & Reliability Unlike standard aftermarket parts, FASWORX focuses on material integrity. Our reservoirs are molded from translucent marine-grade materials, allowing boaters to perform quick visual inspections of oil levels without removing the cap. The reinforced mounting points and specialized seals are designed to prevent the leaks and cracks common in older, heat-cycled OEM units. Key Fitment Details: Engine Family: 3.0-Liter V6 2-Stroke Compatibility: Mercury / Mariner EFI & OptiMax (1994–2014+) Horsepower: 200, 225, 250, 300 HP Position: On-Engine (Internal) Reservoir

• WIDE COMPATIBILITY: Specifically designed for Mercury, Mariner, and Mercury Racing 3.0L (3000cc) V6 2-stroke outboards, including 200HP, 225HP, 250HP, and 300HP models.
• DIRECT OEM REPLACEMENT: Engineered to match the fit and function of original part numbers 8M0119508, 8M0064073, 830889A1, 830889A10, and 818456A1 for a seamless installation.
• MARINE-GRADE DURABILITY: Constructed from high-impact, translucent polymer that resists UV degradation and withstands the intense heat and vibration of the marine engine environment.
• COMPLETE ASSEMBLY: This on-engine reservoir kit comes ready for installation and typically includes the tank body, sealing cap, and mounting hardware for a quick restoration of your oiling system.
• VERSATILE APPLICATION: Fits a broad range of 3.0L powerheads including EFI, OptiMax (DFI), SeaPro, and SportJet 250 DFI (2002–2006) models. Always verify engine serial number for exact fitment.