805100 Thrust Washer for MerCruiser Bravo | JLM Marine

805100 Thrust Washer for MerCruiser Bravo | JLM Marine

This thrust washer is engineered to fit MerCruiser Bravo One, Two, and Three stern drive systems, delivering reliable performance for critical drivetrain applications. Designed as a direct aftermarket replacement, this component ensures proper alignment and load distribution in your stern drive assembly.

This part directly replaces Mercury/Quicksilver OEM part numbers 805100 and 805100T, providing seamless compatibility with original equipment specifications.

• Direct replacement for MerCruiser Bravo stern drives
• Precision-engineered for proper thrust load management
• Compatible with Bravo One, Two, and Three models

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

• 1 × Thrust Washer (805100)

Installation Guide

1. Disconnect the battery and ensure the vessel is securely supported on a lift or trailer. Remove the stern drive unit according to your service manual.
2. Disassemble the lower unit to access the drive shaft and thrust bearing assembly. Clean all surfaces thoroughly to remove old grease and debris.
3. Inspect the existing thrust washer for wear, scoring, or discoloration. Replace if any damage is evident.
4. Position the new thrust washer in the correct orientation, ensuring it sits flat against the thrust bearing surface. Apply marine-grade grease to both sides of the washer.
5. Reassemble the drive shaft components in the reverse order of disassembly, torquing all fasteners to manufacturer specifications. Reinstall the stern drive unit and reconnect the battery.
6. Test the drive for smooth operation and check for abnormal noise or vibration during initial sea trial.

Troubleshooting & FAQ

Q: How do I confirm this thrust washer fits my MerCruiser Bravo drive?
A: Cross-reference your existing part number with 805100 or 805100T. This washer fits all Bravo One, Two, and Three stern drive models. Consult your service manual or the Mercury parts diagrams linked above to verify placement.

Q: What are the signs that my thrust washer needs replacement?
A: Common symptoms include excessive play in the propeller shaft, clunking noises during gear engagement, vibration at higher speeds, or visible wear/scoring on the washer surface during inspection. Replace immediately if damage is found.

Q: How often should I replace the thrust washer?
A: Inspect the thrust washer during routine lower unit maintenance or anytime the drive is disassembled. Replace it if you notice wear, discoloration, or if it has been subjected to shock loads or impacts.

Q: Can I reuse the old thrust washer if it looks okay?
A: While it may appear intact, thrust washers can develop micro-fractures or lose hardness over time. For critical drivetrain reliability, it's best practice to replace it during rebuild or major service intervals.

Q: Is this an OEM part or an aftermarket replacement?
A: 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.

Q: How fast do you ship and how much does it cost?
A: 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.

Q: What is your warranty and return policy?
A: 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.