Sierra 18-2692 Lower Unit Seal Kit for Johnson/Evinrude 85-115 HP V-4 Outboards (1973-83)

The Sierra 18-2692 Lower Unit Seal Kit supplies the gasket and oil seals needed to properly reseal the gear housing on select Johnson/Evinrude outboards. The kit is built around two components: a shift housing gasket and a pair of oil seals, matched to the original equipment specifications of the lower unit they service. Using a complete seal kit rather than sourcing individual seals helps ensure the lower unit is fully resealed in one job, reducing the risk of water intrusion or gear lube leakage from a missed or mismatched component.

This kit is designed for Johnson/Evinrude 85, 90, 100, 110, and 115 HP V-4 outboards built in the 1973-83 range. Each Sierra part is manufactured to meet or exceed the original equipment part it replaces, making the 18-2692 kit a straightforward like-for-like replacement when servicing the lower unit gear housing.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2692
• Product Type: Lower Unit Seal Kit
• Kit Contents: 1x Shift Housing Gasket (Sierra 18-0110), 2x Oil Seal (Sierra 18-2026)
• Weight: 0.1 pounds
• UPC: 030999562913
• Category: Evinrude Outboard Gear Housing Seal Kits
• Fitment: Johnson/Evinrude 85, 90, 100, 110, 115 HP V-4 outboards, 1973-83

Fitment

• Johnson/Evinrude 85 HP V-4, 1973-83
• Johnson/Evinrude 90 HP V-4, 1973-83
• Johnson/Evinrude 100 HP V-4, 1973-83
• Johnson/Evinrude 110 HP V-4, 1973-83
• Johnson/Evinrude 115 HP V-4, 1973-83

Replaces (OEM)

• 324670 (Shift Housing Gasket)
• 321453 (Oil Seal)

Frequently Asked Questions

What does the Sierra 18-2692 Lower Unit Seal Kit include? The kit contains one shift housing gasket (Sierra 18-0110, OE 324670) and two oil seals (Sierra 18-2026, OE 321453), covering the seals needed for a lower unit gear housing resealing job.

Which outboards does the 18-2692 seal kit fit? This kit fits Johnson/Evinrude 85, 90, 100, 110, and 115 HP V-4 outboards built in the 1973-83 range.

Does the 18-2692 kit include the oil seals and gasket together, or are they sold separately? Everything is included in one package: the shift housing gasket and both oil seals ship together under part number 18-2692, so no separate purchases are needed for those components.

What OEM part numbers does the 18-2692 kit replace? The kit replaces OEM shift housing gasket 324670 and OEM oil seal 321453.

How many oil seals come in the Sierra 18-2692 kit? Two oil seals (Sierra 18-2026) are included in the 18-2692 kit, along with one shift housing gasket.

Is the Sierra 18-2692 a genuine OEM part or an aftermarket replacement? 18-2692 is a Sierra-manufactured replacement kit, made to meet or exceed the specifications of the original equipment gasket and seals it replaces rather than being a Johnson/Evinrude branded OEM part.

How much does the 18-2692 seal kit weigh? The Sierra 18-2692 Lower Unit Seal Kit weighs 0.1 pounds.

Will the 18-2692 kit work on a Johnson/Evinrude 90 HP V-4 from other years outside 1973-83? Sierra lists the 18-2692 kit as fitting the Johnson/Evinrude 90 HP V-4 for the 1973-83 model years; fitment outside that range is not specified.

What is the difference between the shift housing gasket and the oil seals in this kit? The shift housing gasket (18-0110, OE 324670) seals the shift housing to prevent leaks at that joint, while the two oil seals (18-2026, OE 321453) seal rotating shafts in the lower unit gear housing to keep gear lube in and water out.

Do I need any other parts to complete a lower unit reseal besides the 18-2692 kit? The 18-2692 kit supplies the shift housing gasket and oil seals for the gear housing; whether additional gaskets or seals are needed depends on the full scope of the lower unit being serviced.