Sierra Oil Seal 18-2005, Replaces 313284, for Evinrude Outboard Prop and Driveshaft
Sierra Oil Seal 18-2005, Replaces 313284, for Evinrude Outboard Prop and Driveshaft
The Sierra Oil Seal 18-2005 is a direct-replacement oil seal designed for Evinrude outboard prop and driveshaft applications. It is built to restore a proper seal at the prop shaft or driveshaft housing, helping keep gear lubricant contained and water out of the lower unit. As a direct replacement for OEM part number 313284, this seal is intended for boat owners and marine technicians performing lower unit service, gearcase rebuilds, or prop shaft seal replacement on compatible Evinrude outboards.
This is a compact, lightweight component at just 0.03 pounds, sized to fit precisely in place of the original equipment seal it replaces. Using the correct Sierra part number ensures the seal matches the dimensions and sealing characteristics required for a proper gearcase seal, which is critical to preventing water intrusion and gear oil leakage that can lead to costly lower unit damage.
Specifications
- Brand: Sierra
- Manufacturer Part Number: 18-2005
- Component Type: Oil Seal
- Weight: 0.03 pounds
- UPC: 808282257668
Fitment
- Evinrude outboard prop and driveshaft applications
Replaces (OEM)
- 313284
Frequently Asked Questions
What does the Sierra 18-2005 oil seal replace? It is a direct replacement for OEM part number 313284.
What outboards is the 18-2005 oil seal designed for? This seal is designed for Evinrude outboard prop and driveshaft applications.
How much does this oil seal weigh? The Sierra 18-2005 oil seal weighs 0.03 pounds, a small, lightweight sealing component.
Is the Sierra 18-2005 the same as OEM part 313284? Yes, Sierra 18-2005 is manufactured as a direct equivalent to OEM number 313284 for the same application.
Where is this seal typically installed? It seals at the prop shaft or driveshaft area of the outboard lower unit, part of the Evinrude prop and driveshaft seal group.
Can I use part number 313284 to cross-reference this product? Yes, 313284 is the OEM number that Sierra part 18-2005 replaces.
Is this an OEM or aftermarket part? The 18-2005 is a Sierra-branded aftermarket seal manufactured to replace the OEM 313284 part.
Why does the driveshaft or prop shaft seal need to be replaced? A worn or failed seal like the one replaced by Sierra 18-2005 can allow water into the gearcase or let gear oil leak out, so replacing it during lower unit service protects the outboard.
What is included when ordering the 18-2005 seal? Ordering the Sierra 18-2005 gets you the single oil seal component listed under that part number.
Does this seal fit other outboard brands besides Evinrude? The Sierra 18-2005 oil seal is designated for Evinrude outboard prop and driveshaft applications.