Trim Cylinder Ram Cap – Fits MerCruiser Alpha One Gen II Stern Drives (Replaces 19-815951, 8M0214953)

Trim Cylinder Ram Cap – Fits MerCruiser Alpha One Gen II Stern Drives (Replaces 19-815951, 8M0214953)

This trim cylinder ram end cap is designed for MerCruiser Alpha One Generation II stern drives manufactured from 1991 and newer, specifically those with serial numbers OD469859 and up. It serves as a direct replacement for several OEM and aftermarket part numbers.

Engineered from high-temperature resistant plastic, this cap protects the anchor pin, preventing debris and water from entering the trim cylinder assembly. Its press-fit design ensures a secure and lasting fit.

• Installation Method: Simple snap-on/press-fit design for easy replacement.
• Material: Constructed from durable, high-temperature resistant plastic to withstand harsh marine environments.
• Direct Replacement: Replaces Mercury Marine 19-815951 / 8M0214953, Sierra 18-2466-9, GLM 26490, and Mallory 9-77201.

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 x Trim Cylinder Ram End Cap (Replaces 19-815951/8M0214953)

Important: Each trim cylinder requires two end caps. This package contains one cap. Please verify the quantity you need before ordering.

Installation Guide

1. Safety First: Ensure the engine is off, the battery is disconnected, and the stern drive is in a secure, supported position.
2. Access the Cylinder: Locate the trim cylinder and the end cap that needs replacement. You may need to tilt the drive for better access.
3. Remove the Old Cap: Carefully pry off the old end cap using a flat-head screwdriver or a suitable trim removal tool. Be cautious not to damage the cylinder housing.
4. Clean the Surface: Wipe the area around the anchor pin to remove any dirt, grease, or corrosion.
5. Install the New Cap: Align the new cap over the anchor pin opening and press it firmly into place. It should snap securely into position with even pressure.
6. Final Check: Reconnect the battery, restore power, and test the trim/tilt function to ensure everything operates smoothly.

Troubleshooting & FAQ

Q: How do I confirm this cap fits my MerCruiser drive?
A: This cap fits MerCruiser Alpha One Gen II drives from 1991 and newer with serial numbers 0D469859 and up. Please check the 'Compatible Engine Models' table on this page to verify your specific serial number range.

Q: What are the signs that my original end cap needs replacing?
A: Common signs of failure include visible cracks, chipping, the cap becoming brittle from age, or being loose or missing entirely. Replacing a damaged cap prevents water and debris from damaging the internal trim cylinder components.

Q: Is this a single cap or a pair?
A: This product is sold as a single cap. Be aware that each trim cylinder uses two caps (one on each side). You may need to purchase two units to service one complete cylinder.

Q: OEM vs. Aftermarket?
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.