Mercury Lower Unit SE218 Replacement for Mercury 3.0L Outboards – 25″ & 30″ Options Available

Description The Mercury Lower Unit is designed to replace most Mercury 3.0L lower units, specifically for serial numbers SN 1B504989 and below. This product does not accommodate the Torque Master, Torque Master 2, or Sport Master configurations. It is available with a choice of a 25-inch or 30-inch (13 spline) one-piece drive shaft, ensuring compatibility with various outboard setups. This replacement lower unit provides an essential function by maintaining proper propulsion and steering control for your boat. The SE218 model ensures durability and performance under marine conditions while being easy to install for those looking to enhance their engine’s reliability. Features & Specifications: Replaces most Mercury 3.0L Lower Units (SN 1B504989 and below) Not compatible with Torque Master, Torque Master 2 or Sport Master Available in two lengths: 25 inches (part number: 45-823901A) and 30 inches (part number: 45-824115A) One-piece drive shaft configuration (13 spline) If using an old eight-spline drive shaft, requires stub shaft unit purchase from OE dealer Came equipped with correct water tube coupling for serial numbers OG438000 and higher If the serial number is lower than OG438000, use old water coupling or order part SEI part number:96-116-12K Quick Overview: Feature Description Compatibility Makes suitable replacements for Mercury models up to SN 1B504989. Shaft Lengths Available Select between a durable one-piece design in either length of your choice -25″ or30″. Coupling Type Includes necessary components based on specific serial numbers. Durability Built to withstand harsh marine environments; offers reliable performance over time. This Mercury Lower Unit offers exceptional value without compromising quality. With its straightforward installation process and robust construction tailored specifically for certain Mercury models, it?s an ideal solution that will keep your vessel running smoothly on the water. Take advantage of this opportunity today?order now to ensure you have top-tier parts at competitive prices! Brand Name: SEI Marine OEM Part Number: BRAND: SEI MARINE Search Terms: Mercury Lower Unit SE218, Mercury 3.0L Outboard replacement, SE218 lower unit, 25 inch lower unit, 30 inch lower unit, Mercury outboard parts, SEI Marine gear case, Mercury drive shaft replacement, Mercury outboard lower unit repair, SE218 compatibility guide, water tube coupling for Mercury units, serial number OG438000 and higher part compatibility.