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18643A5 Premium Engine Drive Coupler Assembly for MerCruiser Alpha One, Gen II & Bravo Sterndrives | Fits 3.0L 4.3L 4.5L 5.0L 5.7L Engines | 14-Inch Flywheel, 3-Inch Bolt Pattern | Replaces 18-2323 in Kuwait 18643A5 Premium Engine Drive Coupler Assembly for MerCruiser Alpha One, Gen II & Bravo Sterndrives | Fits 3.0L 4.3L 4.5L 5.0L 5.7L Engines | 14-Inch Flywheel, 3-Inch Bolt Pattern | Replaces 18-2323 in Kuwait 18643A5 Premium Engine Drive Coupler Assembly for MerCruiser Alpha One, Gen II & Bravo Sterndrives | Fits 3.0L 4.3L 4.5L 5.0L 5.7L Engines | 14-Inch Flywheel, 3-Inch Bolt Pattern | Replaces 18-2323 in Kuwait 18643A5 Premium Engine Drive Coupler Assembly for MerCruiser Alpha One, Gen II & Bravo Sterndrives | Fits 3.0L 4.3L 4.5L 5.0L 5.7L Engines | 14-Inch Flywheel, 3-Inch Bolt Pattern | Replaces 18-2323 in Kuwait 18643A5 Premium Engine Drive Coupler Assembly for MerCruiser Alpha One, Gen II & Bravo Sterndrives | Fits 3.0L 4.3L 4.5L 5.0L 5.7L Engines | 14-Inch Flywheel, 3-Inch Bolt Pattern | Replaces 18-2323 in Kuwait 18643A5 Premium Engine Drive Coupler Assembly for MerCruiser Alpha One, Gen II & Bravo Sterndrives | Fits 3.0L 4.3L 4.5L 5.0L 5.7L Engines | 14-Inch Flywheel, 3-Inch Bolt Pattern | Replaces 18-2323 in Kuwait 18643A5 Premium Engine Drive Coupler Assembly for MerCruiser Alpha One, Gen II & Bravo Sterndrives | Fits 3.0L 4.3L 4.5L 5.0L 5.7L Engines | 14-Inch Flywheel, 3-Inch Bolt Pattern | Replaces 18-2323 in Kuwait 18643A5 Premium Engine Drive Coupler Assembly for MerCruiser Alpha One, Gen II & Bravo Sterndrives | Fits 3.0L 4.3L 4.5L 5.0L 5.7L Engines | 14-Inch Flywheel, 3-Inch Bolt Pattern | Replaces 18-2323 in Kuwait

18643A5 Premium Engine Drive Coupler Assembly for MerCruiser Alpha One, Gen II & Bravo Sterndrives | Fits 3.0L 4.3L 4.5L 5.0L 5.7L Engines | 14-Inch Flywheel, 3-Inch Bolt Pattern | Replaces 18-2323

KWD 62.500
Brand
FASWORX
Weight
4.6 kg
– 1 +

Special Features

  • DIRECT REPLACEMENT: Exact fit aftermarket replacement for OEM part numbers 18643A5, 18643A7, and 710-18643A5. Also seamlessly cross-references with Sierra 18-2323, GLM 11532, and EMP 93-93203.
  • MARINE-GRADE DURABILITY: This premium part is built to last through high-torque applications and harsh marine environments, offering superior vibration dampening and rotational strength to outlast standard alternatives.
  • PRECISE TECHNICAL SPECS: Designed specifically for 14-inch flywheels with a 3-inch crankshaft bolt pattern. Features a triangular shape, flywheel mount design for engines utilizing a 1-piece rear main seal.
  • DRIVE COMPATIBILITY: Engineered to securely fit MerCruiser Alpha One, Alpha Gen II, and Bravo (LX) sterndrives connected to 3.0L (4-Cyl), 4.3L (V-6), 4.5L MPI, 5.0L, and 5.7L (V-8) engine blocks.
  • FITMENT VERIFICATION: Input yoke is NOT included. To ensure a correct installation, you must verify your exact engine block size and serial number against our fitment chart before purchasing.

Description

FASWORX Premium Engine Drive Coupler Assembly (18643A5) Keep your powertrain running at peak performance with the FASWORX Premium Engine Drive Coupler. Manufactured to exacting technical standards, this heavy-duty coupler is built to last, providing exceptional rotational strength and vibration dampening for your MerCruiser Alpha or Bravo sterndrive. Whether you are doing routine maintenance or a complete overhaul, this premium aftermarket upgrade ensures a reliable connection between your engine and drive. Technical Specifications: Flywheel Size: 14-Inch Bolt Pattern: 3-Inch Crankshaft Bolt Pattern Mount Type: Triangular Shape Seal Compatibility: 1-Piece Rear Main Seal Note: Does not include input yoke or mounting hardware.

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