Tilt Trim Seal Kit – Fits Yamaha 115-250HP Fast Strike Outboards 1997-Current (Replaces 115225FS)

Tilt Trim Seal Kit – Fits Yamaha 115-250HP Fast Strike Outboards 1997-Current

This tilt trim seal kit is designed for Yamaha 115HP, 150HP, 175HP, 200HP, 225HP (20" shaft), and 250HP (20" shaft) Fast Strike outboard engines from 1997 to the current model year. It is fully compatible with Showa-style integrated three-ram trim and tilt systems.

This kit serves as a direct replacement for Yamaha OEM part numbers 115225FS and 6E5-43866-09, as well as the Fast Strike Power Trim Tilt Seal Kit, ensuring a precise fit and reliable performance.

• Installation Method: Direct replacement for a straightforward installation.
• Material: Constructed from a high-quality Rubber/Viton blend for enhanced durability.
• Superior Resistance: Viton formulation provides excellent resistance to saltwater, UV rays, ethanol, and oxidation.

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 Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Compatible Trim Unit Models

Cross-Brand Compatibility

Technical Specifications

Package Contents

• 1 x Tilt Trim Seal Kit (115225FS) containing seals for all 3 cylinders and all necessary additional O-rings.

Installation Guide

Follow these general steps to replace your tilt trim seals. Professional installation is recommended.

1. Safety First: Disconnect the battery cables from the battery before beginning any work.
2. Position the Engine: Lower the outboard motor to the full down position to relieve hydraulic pressure.
3. Access the Unit: Remove the trim and tilt unit from the outboard bracket. This may require removing pins or bolts.
4. Disassemble Cylinders: Carefully remove the end caps from the trim and tilt cylinders. A specialized pin wrench may be required.
5. Remove Old Seals: Extract the old, worn seals from the cylinder end caps and pistons. Pay close attention to their orientation.
6. Clean Components: Thoroughly clean the cylinder bores, pistons, and end caps to remove all old fluid, dirt, and debris.
7. Install New Seals: Lubricate the new seals with fresh hydraulic fluid and carefully install them in their respective grooves.
8. Reassemble: Reinstall the pistons and end caps, torquing them to the manufacturer's specifications.
9. Reinstall and Bleed: Reinstall the trim/tilt unit on the engine. Fill the reservoir with the recommended hydraulic fluid and bleed the system by cycling the unit up and down several times until the operation is smooth.

Troubleshooting & FAQ

How do I confirm this kit fits my engine?

This kit is designed for Yamaha 115HP to 250HP Fast Strike outboards (1997-Current) with Showa-style trim tilt systems. It is critical to verify your engine model and year against the compatibility tables on this page. For 225HP and 250HP models, this kit fits 20" shaft models only. When in doubt, compare our product images to your existing parts.

What are the signs my tilt trim seals are failing?

Common symptoms include the outboard motor slowly drifting down from its trimmed position, visible hydraulic fluid leaks on or around the trim unit, or a "spongy" and jerky operation when trimming the engine up or down. A whining noise from the motor could also indicate air in the system from a leak.

What makes this Viton kit better for saltwater?

The seals are made from a high-quality Viton material, which offers superior resistance to degradation from saltwater, UV exposure, ethanol blended fuels, and general oxidation compared to standard nitrile rubber seals. This ensures a longer service life in harsh marine environments.

OEM vs. Aftermarket?

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.