Engineered Marine Products 26-01500 Lower Unit Seal Kit for Tohatsu/Nissan Outboards

The Engineered Marine Products 26-01500 Lower Unit Seal Kit is a precision-engineered aftermarket replacement designed to restore and maintain the watertight integrity of the lower unit gearcase on compatible Tohatsu and Nissan outboard motors. This seal kit provides a cost-effective solution for preventing gear lube leakage and water intrusion into the lower unit — two of the most common causes of gearcase damage.

Key Features:

• Engineered to match OEM form, fit, and function for reliable performance
• Includes all necessary seals, O-rings, and gaskets required for a complete lower unit reseal
• Materials selected for durability and resistance to corrosion, saltwater, and marine-grade gear lubricants
• Designed for straightforward installation using standard marine service tools
• Quality aftermarket alternative to OEM components at a competitive price point

Cross-Reference Part Numbers:

• Sierra: 18-74611
• Tohatsu/Nissan: 346-87321-6, 346873215, 346873217M

Regular inspection and replacement of lower unit seals is essential preventive maintenance for any outboard motor. Worn or damaged seals can allow water to mix with gear lube, leading to rapid bearing and gear wear. The EMP 26-01500 seal kit makes it straightforward to perform this service and protect your gearcase investment.