8M0065064 Seal Kit for Mercury Verado | JLM Marine

8M0065064 Seal Kit for Mercury Verado 5.44 200-400HP

This seal kit is engineered for Mercury Verado outboards ranging from 200HP to 400HP, covering both Torpedo and HD Sportmaster gear housing configurations with the 5.44 driveshaft. It fits a wide array of serial number ranges across 2.6L Verado, Verado Pro, and Racing models, ensuring comprehensive coverage for professional maintenance and rebuild applications.

This aftermarket seal kit directly replaces Mercury OEM part number 8M0065064, providing essential sealing components for gear housing and driveshaft assemblies on compatible Verado engines.

• Designed for Mercury Verado 5.44 gear housing (Torpedo & HD Sportmaster)
• Compatible with 200HP, 225HP, 250HP, 275HP, 300HP, 350HP, and 400HP Verado models
• Essential components for driveshaft maintenance and gear housing service

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

This seal kit includes all essential sealing components required for Mercury Verado 5.44 gear housing and driveshaft service. Verify contents against your service manual to ensure complete coverage for your specific application.

Installation Guide

1. Disconnect the battery and remove the outboard from the water. Thoroughly clean the exterior of the gear housing to prevent contamination during disassembly.
2. Remove the lower unit from the engine according to your Mercury service manual procedures. Drain all gear oil and inspect for metal shavings or discoloration indicating internal wear.
3. Disassemble the gear housing following factory specifications, carefully noting the orientation and sequence of all components for reassembly.
4. Remove old seals from the driveshaft and housing surfaces using appropriate seal removal tools. Avoid scratching or damaging machined surfaces.
5. Clean all seal contact surfaces with solvent and inspect for scoring, corrosion, or wear that may compromise new seal performance.
6. Lubricate new seals with marine-grade grease or gear oil before installation. Install seals using proper seal drivers to ensure even seating without distortion.
7. Reassemble the driveshaft and gear housing components in reverse order, torquing all fasteners to Mercury's specified values.
8. Refill the lower unit with the correct type and quantity of gear oil as specified in your owner's manual. Check for proper oil level and absence of leaks.
9. Reinstall the lower unit onto the engine, ensuring proper alignment and engagement of shift linkage and water tube.
10. Perform a water test to verify proper shifting, cooling, and absence of oil leaks. Monitor the lower unit for the first few hours of operation.

Troubleshooting & FAQ

How do I confirm this seal kit fits my specific Verado engine?
Verify your engine's serial number against the compatibility table above. Use the Mercury Serial Number Guide linked in the compatibility section to locate your engine's serial number, then cross-reference it with the serial ranges listed for your horsepower rating.

What are the signs that my driveshaft seals need replacement?
Common indicators include gear oil leaking from the propeller shaft area, milky or discolored gear oil (indicating water intrusion), abnormal whining or grinding noises from the lower unit, or visible oil residue around the skeg or cavitation plate.

How often should I replace the seals in my Verado lower unit?
Mercury recommends inspecting seals during routine lower unit service (typically every 100 hours or annually). Replace seals if you notice any leakage, during gear housing rebuild, or anytime the lower unit is disassembled for other repairs.

Can I use this kit on both Torpedo and HD Sportmaster gear housings?
Yes, this seal kit (8M0065064) is designed to fit both 5.44 Torpedo and 5.44 HD Sportmaster configurations across the compatible Verado models listed in the compatibility table.

What's the difference between OEM and aftermarket seal kits?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.