FASWORX 26-16709A2 Upper Gear Housing Seal Kit for MerCruiser Bravo I, II, III, X, XR, XZ Outdrives | Replaces 26-16709A1, Sierra 18-2643 | Premium Marine Grade Sterndrive Gasket Set

FASWORX Premium Upper Gear Housing Seal Kit (Ref: 26-16709A2) The FASWORX Upper Gear Housing Seal Kit is built to deliver a factory-tight watertight barrier for your sterndrive. Designed to trap gear lube inside while completely preventing water intrusion, this comprehensive kit includes every precision-machined seal, o-ring, and gasket required to completely reseal the upper driveshaft housing. Engineered with advanced material science, these components are molded from high-density, oil- and heat-resistant marine rubber. They offer uncompromising performance in both freshwater and harsh saltwater environments, resisting chemical degradation, friction, and corrosion. At a Glance Compatibility Breakdown: Verify your sterndrive model and generation prior to purchase. Standard Bravo Family (1988 & Up) Bravo I Bravo II Bravo III Bravo X Series (2000 & Up) Bravo I X Bravo II X Bravo III X Performance Series (2000 & Up) Bravo XR Bravo XZ Cross-Reference Identification: OEM: 26-16709A2, 26-16709A1 Sierra: 18-2643 GLM: 87480 Mallory: 9-74301 Installation Note: Highly recommended for replacement anytime the driveshaft housing is removed from the transom assembly or during any standard upper gearcase leak troubleshooting.

• EXACT FIT REPLACEMENT: Engineered specifically for MerCruiser Bravo I, II, III (1988 & Up), Bravo X Series (2000 & Up), Bravo XR/XZ . Note: Fitment is determined by the sterndrive unit generation, not the engine block size.
• OEM DIRECT INTERCHANGE: Directly replaces Mercury / Quicksilver OEM part numbers 26-16709A2 and 26-16709A1. Also replaces aftermarket equivalents Sierra 18-2643, GLM 87480, Mallory 9-74301, and SEI 94-121-09K.
• MARINE-GRADE MATERIAL SCIENCE: Constructed from premium, high-density marine rubber. Designed to maintain structural integrity and shape under severe torque, extreme temperature fluctuations, and heavy friction typical in upper gearcase assemblies.
• ENVIRONMENTAL RESILIENCE: Built to withstand the harshest aquatic conditions. Provides a watertight barrier that prevents water intrusion and chemical degradation while locking gear lube inside to maintain proper gearcase pressure in both freshwater and saltwater environments.
• COMPLETE REPAIR SOLUTION: Includes all precision-machined seals, O-rings, and gaskets required to properly reseal the upper driveshaft housing. Essential for standard upper gearcase maintenance, leak troubleshooting, or whenever the outdrive is removed from the transom.