CDI Electronics 18-99538 551-33TN Gearcase Filler Threaded Replacement Nozzle

The CDI Electronics 551-33TN Threaded Nozzle (Sierra part number 18-99538) is a genuine replacement nozzle designed for use with the CDI Electronics 551-33-1 Gearcase Filler. This threaded nozzle provides a secure, leak-free connection when filling or servicing outboard lower unit gearcases, making routine gear lube maintenance clean and efficient.

The 551-33TN threaded tip is compatible with Tohatsu and Nissan outboard lower units and works in conjunction with the 551-33-1 gearcase filler system's check valve venting design, which creates an air-lock to prevent lubricant loss during nozzle removal.

Key Features:

• Replacement threaded nozzle for the CDI Electronics 551-33-1 Gearcase Filler
• Designed for Tohatsu and Nissan outboard lower unit applications
• Threaded design ensures a secure, drip-free connection during gear lube service
• Compatible with the 551-33-1 gearcase filler check valve venting system
• Also included as a component in the CDI Electronics 551-334K Lower Unit Adapter Kit
• Sold individually as a direct replacement part

The 551-33TN is also available as part of the CDI 551-334K Adapter Kit, which includes multiple adapter fittings for a variety of outboard brands. Order this threaded nozzle to replace a worn or lost tip and restore your gearcase filler to full working condition.

Cross Reference / OEM Part Numbers: Sierra 18-99538 | CDI 551-33TN