Mercury 3.0L Lower Unit Replacement SE216 for Outboard Engines – Fits SN 1B504989 and Below, Available in 20″, 25″, or 30″ Drive Shaft

Description The Mercury Lower Unit, model SE216, is designed to replace most Mercury 3.0L lower units with serial numbers SN 1B504989 and below. This unit does not support Torque Master, Torque Master 2, or Sport Master configurations. Available in three sizes?20 inch (45-824114A), 25 inch (45-823901A), and 30 inch (45-824115A)?it features a durable one-piece drive shaft with a choice of either a 13-spline or an option for an eight-spline stub shaft configuration. This product provides reliable performance for your outboard motor by ensuring optimal water flow through the correct water tube coupling for models with serial numbers OG438000 and higher. If you have an older model with a different serial number, simply use your existing water coupling or purchase the necessary part separately. 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 sizes: 20 inches – Part Number: 45-824114A 25 inches – Part Number: 45-823901A 30 inches – Part Number: 45-824115A (limited availability) One-piece drive shaft available in both 13 spline configurations If using an eight-spline drive shaft, requires separate stub shaft unit from OE dealer Correct water tube coupling included for models SN OG438000 and higher; older models require existing parts or additional purchases Quick Overview: Mercury Lower Unit SE216 Overview Main Compatibility: MOST Mercury 3.0L Lower Units (SN ?1B504989) Sizes Available: 20″, 25″, & limited availability of30″ options Drive Shaft Type: One-Piece Drive Shaft Water Tube Coupling: Included for SN ?OG438000 Please check compatibility before ordering! The Mercury Lower Unit SE216 is essential for maintaining the efficiency of your outboard engine while providing durability that meets industry standards. With its easy installation process and compatibility features tailored to specific models, this product ensures smooth operation on the water. Order today to enhance your boating experience! With quality assurance backed by excellent warranties in the aftermarket marine parts industry, you can trust that you’re making a smart investment. Brand Name: SEI Marine OEM Part Number: BRAND: SEI MARINE Search Terms: Mercury 3.0L lower unit replacement, SE216 lower unit, Mercury outboard lower unit, outboard engine parts replacement, 20 inch drive shaft for Mercury, 25 inch drive shaft for Mercury, 30 inch drive shaft for Mercury, SEI Marine gear case replacement, SN 1B504989 compatible parts, water tube coupling for SE216, two-piece to one-piece drive shaft conversion, marine lower unit repair parts, SEI part number 96-116-12K compatibility.