Seal Kit – Fits Mercury Verado 200HP 225HP 250HP 275HP 300HP 350HP 400HP (Replaces 8M0065064)

Product Details

This Seal Kit is engineered for Mercury Verado outboards from 200HP to 400HP, covering 5.44 HD Sportmaster and 5.44 Torpedo driveshaft configurations. Compatible with serial ranges spanning from 0P520553 through 2B618256 and up, this kit supports gear housing and driveshaft maintenance across six-cylinder and 2.6L Verado models, including Verado Pro and Racing editions.

This aftermarket seal kit directly replaces Mercury OEM part number 8M0065064, delivering the same fitment and function for your service needs.

• Designed for gear housing and driveshaft sealing on 5.44 HD Sportmaster and 5.44 Torpedo units
• Fits a wide range of Verado models including 200HP, 225HP, 250HP, 275HP, 300HP, 350HP, and 400HP variants
• Suitable for standard Verado, Verado Pro, and Racing applications

Part Number Matrix

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

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

OEM Reference

8M0065064

Application

Gear Housing, Driveshaft

Drive Ratio

5.44 HD Sportmaster / 5.44 Torpedo

Fitment

Mercury Verado 200HP–400HP

What's in the Box

• Seal Kit (complete set for gear housing and driveshaft service)

Installation Notes

1. Disconnect power and remove the lower unit from the outboard following your service manual.
2. Drain all gear oil and inspect for metal particles or contamination.
3. Clean all mating surfaces thoroughly to remove old sealant and residue.
4. Remove worn seals from the gear housing and driveshaft locations using appropriate seal pullers.
5. Install new seals with appropriate driver tools, ensuring even seating and correct orientation.
6. Apply marine-grade sealant to gasket surfaces as specified by the manufacturer.
7. Reassemble the lower unit, torque all fasteners to specification, and refill with recommended gear oil.
8. Check for leaks and verify proper operation before returning the outboard to service.

Troubleshooting & FAQ

How do I know if my seals need replacement?

Common signs include gear oil leaking around the lower unit, milky or contaminated oil during changes, or visible wear on seals during routine inspection. Replace seals if any of these symptoms are present to prevent water intrusion and bearing damage.

Can I use this kit on both HD Sportmaster and Torpedo drives?

Yes, this seal kit is compatible with both 5.44 HD Sportmaster and 5.44 Torpedo driveshaft configurations across the specified Verado models and serial ranges.

Do I need special tools to install these seals?

Proper seal drivers and pullers are recommended to avoid damaging new seals during installation. Using the correct tools ensures even seating and prevents leaks.

What's the difference between this and the OEM kit?

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.

How often should I replace gear housing seals?

Replace seals during lower unit rebuilds, when leaks are detected, or as part of preventive maintenance every 200–300 hours of operation, depending on usage and operating conditions.

Will this fit my 2.6L Verado Pro or Racing model?

Yes, this kit covers Verado Pro and 400R Racing models within the specified serial ranges. Always verify your engine serial number against the compatibility table before ordering.

How fast will my order ship?

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

What if this part doesn't fit or fails?

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 against 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.