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

• 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.

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.