Gasket – Fits BRP/OMC/Evinrude/Johnson Outboard Engines (Replaces 393561)

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Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This Gasket – Fits BRP/OMC/Evinrude/Johnson Outboard Engines (Replaces 393561) is a specialized sealing component for various BRP, Evinrude, and Johnson outboard engine applications. It is designed to provide a reliable seal in marine hardware and abrasive environments.

It serves as a direct interchange for BRP/Evinrude Motors 393561, Outboard Marine Corp 393561, and Boeing 3-93561.

Classified under Federal Supply Class 5330 for Packing and Gasket Materials.
Engineered for specific use in marine hardware and abrasives applications.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number	Notes
BRP/Evinrude Motors	393561
Outboard Marine Corp	393561
Boeing	3-93561	NSN 5330-00-530-1383

Technical Specs

Product Type: Gasket
Dimensions: 14.0" x 17.0" x 0.25"
Other Technical Attributes: Used in hardware and abrasives applications. Federal Supply Class 5330 (Packing and Gasket Materials)

What’s in the Box

1 x Gasket (393561)

Installation Notes

Disconnect the boat's battery before beginning work.
If necessary, drain any fluids (e.g., oil, coolant) from the system the gasket belongs to.
Carefully remove the component that the old gasket is sealing.
Thoroughly clean both mating surfaces, removing all traces of the old gasket material and any sealant.
Position the new gasket correctly on the clean surface.
Reinstall the component, tightening bolts or screws to the manufacturer's specified torque and sequence.
Refill any drained fluids.
Reconnect the battery and start the engine, carefully checking for any leaks around the newly sealed area.

Troubleshooting & FAQ

How do I confirm this gasket fits my engine?

This part replaces OEM number 393561. As specific model compatibility is not available, please verify the part number required for your engine against this number. Visually comparing the new gasket to your old one before installation is also a reliable confirmation method.

What are the signs of a failing gasket?

Common signs of a faulty gasket include fluid leaks (oil or water), engine overheating, loss of compression, poor engine performance, or visible signs of degradation on the old gasket itself.

Should I use sealant with this gasket?

Many modern gaskets are designed for dry installation on clean surfaces. However, always consult your engine's official service manual for specific instructions regarding the use of sealants for your application.

What is this gasket made of?

While the exact material composition is not specified in the source data, this aftermarket part is manufactured to meet or exceed original equipment manufacturer (OEM) standards for sealing, durability, and performance in a marine environment.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns?

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
This is an aftermarket replacement, not an OEM component.
Professional installation is recommended for safety and performance.

About Sea Sierra

Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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