Sierra 18-2658 Lower Unit Seal Kit for Johnson/Evinrude Outboard Motor, Replaces 396351

The Sierra 18-2658 Lower Unit Seal Kit is a complete gear housing reseal kit for Johnson/Evinrude outboard motors, built to meet or exceed original equipment quality. Lower unit seals wear out from heat cycling and constant contact with gear lube and water, and a failed seal lets gear lube leak out or water intrude into the gear case, leading to corrosion and gear damage. This kit bundles the parts needed to reseal the lower unit in one purchase rather than sourcing each seal separately.

Inside the kit you get an impeller plate gasket (Sierra 18-0124, OE 325537, qty 1) and oil seals (Sierra 18-2026, OE 321453, qty 2), giving you the gasket and seal set most commonly needed during a lower unit rebuild or water pump service on applicable Johnson/Evinrude outboards. Because fit is engine-specific, confirm your outboard's part numbers against this kit before ordering.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2658
• Product Type: Lower Unit Seal Kit
• Category: Evinrude Outboard Gear Housing Seal Kits
• Kit Contents: Impeller Plate Gasket (18-0124, OE 325537, qty 1); Oil Seal (18-2026, OE 321453, qty 2)
• Color: White
• Shape: Round
• Weight: 0.17 pounds
• UPC: 030999312693

Fitment

For Johnson/Evinrude outboard motors.

Replaces (OEM)

• 396351

Frequently Asked Questions

What does the Sierra 18-2658 Lower Unit Seal Kit include? The kit includes an impeller plate gasket (Sierra 18-0124, OE 325537, qty 1) and oil seals (Sierra 18-2026, OE 321453, qty 2), giving you the gasket and seal set for resealing the lower unit.

What outboard motors is the 18-2658 seal kit for? Sierra 18-2658 is built for Johnson/Evinrude outboard motors that use OEM part 396351.

Does 18-2658 replace OEM part 396351? Yes, Sierra 18-2658 replaces OEM number 396351.

How many oil seals come in the kit? Two oil seals (Sierra 18-2026, OE 321453) are included in the 18-2658 kit, along with one impeller plate gasket.

Is this a genuine Sierra part or aftermarket? The 18-2658 Lower Unit Seal Kit is a Sierra-branded part manufactured to meet or exceed original equipment quality.

How much does the 18-2658 seal kit weigh? The Sierra 18-2658 kit weighs 0.17 pounds.

What color and shape are the seals in this kit? The components in Sierra kit 18-2658 are white and round.

Can I use this kit for a water pump service on my outboard? Yes, the impeller plate gasket and oil seals in the 18-2658 kit are commonly needed parts during lower unit and water pump service on applicable Johnson/Evinrude outboards.

How do I confirm the 18-2658 kit fits my outboard? Check that your outboard's lower unit calls for OEM part 396351, since Sierra 18-2658 is fit specific and replaces that number.

What is the UPC for the Sierra 18-2658 kit? The UPC for Sierra 18-2658 is 030999312693.