FASWORX Lower Unit Gearcase Seal Kit for Johnson Evinrude 9.9 HP & 15 HP (1974-Up), 8 HP, 10 HP Outboards - Replaces OEM 396350, 0396350, Sierra 18-2656 - Marine Grade Gear Housing Reseal Kit

FASWORX Premium Lower Unit Gearcase Seal Kit Restore a watertight seal and protect your outboard’s internal gearing with the FASWORX Lower Unit Gearcase Seal Kit. Engineered for marine-grade resilience, this complete reseal kit provides everything you need to lock out water intrusion and prevent costly gearcase failures. Whether you are addressing a known leak or performing routine seasonal maintenance alongside an impeller change, this kit is designed for drop-in replacement with zero modifications required.

• EXACT COMPATIBILITY: Fits select Johnson and Evinrude outboards including 8 HP (4-Stroke 1996–2004), 9.9 HP & 15 HP (2-Stroke 1974 & Newer / 4-Stroke 1994–2001), and 10 HP (2-Stroke 1996–1998) small gearcase models.
• DIRECT REPLACEMENT: Precision-engineered to match or exceed OEM specifications. Directly replaces OMC / Johnson / Evinrude OEM part numbers 396350 and 0396350. Also replaces aftermarket cross-reference numbers Sierra 18-2656, Mallory 9-74100, and GLM 87602.
• MARINE-GRADE RESILIENCE: This is a high-quality premium part built to last. Manufactured from commercial-grade, weather-resistant elastomers designed to withstand harsh saltwater and freshwater environments without fluid breakdown.
• COMPLETE RESEAL SOLUTION: This kit includes all essential O-rings, oil seals, and washers required to drop the lower unit and perform a comprehensive reseal. Lock out water intrusion and protect your internal gearing from premature failure.
• MAINTENANCE ESSENTIAL: An absolute must-have for routine seasonal maintenance. We highly recommend replacing your gearcase seals anytime you open the lower unit for water pump or impeller service to ensure ultimate outboard protection and longevity.