Floor Mounted Bracket – Fits MerCruiser Alpha/Bravo Sterndrives (Replaces 862548A1, 42419A1)

Floor Mounted Bracket – Fits MerCruiser Alpha/Bravo Sterndrives (Replaces 862548A1, 42419A1)

This floor-mounted bracket is designed for MerCruiser Alpha I, Alpha II, Bravo, and Pre-Alpha sterndrive applications from 1983 and newer that require a floor-mounted hydraulic trim pump bracket.

It serves as a direct replacement for Mercury/MerCruiser part numbers 862548A1 and 42419A1, as well as several aftermarket equivalents. The aftermarket version is constructed from stainless steel for superior durability compared to the OEM painted steel.

• Installation Type: Floor Mount
• Material: Stainless Steel (Aftermarket)
• Compatibility: Includes mounting holes for the pump and solenoid array.

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 Floor Mounted Bracket (862548A1/42419A1)

Installation Guide

1. Disconnect the vessel's battery before beginning work.
2. Locate and carefully remove the old trim pump and bracket assembly. Disconnect all hydraulic and electrical lines.
3. Thoroughly clean the mounting surface in the boat's bilge where the new bracket will be installed.
4. Position the new floor-mounted bracket in the correct location, aligning it with the original mounting holes.
5. Secure the bracket firmly to the floor using appropriate marine-grade fasteners.
6. Mount the hydraulic trim pump onto the new bracket.
7. Attach the solenoid array to the designated mounting points on the bracket.
8. Reconnect all hydraulic lines and electrical wiring to the pump and solenoids.
9. Reconnect the battery and test the trim and tilt system for smooth and correct operation.
10. Inspect for any hydraulic fluid leaks or loose connections.

Troubleshooting & FAQ

How do I know if this bracket fits my MerCruiser sterndrive?

This bracket is designed for MerCruiser Alpha I, Alpha II, Bravo, and Pre-Alpha sterndrives from 1983 and newer. It directly replaces OEM part numbers 862548A1 and 42419A1. We strongly recommend comparing your old part to our product images and specifications to confirm a perfect match.

What is the difference between this bracket and the original OEM part?

Our aftermarket bracket is constructed from stainless steel for superior corrosion resistance and longevity, whereas the original OEM parts are typically made from painted steel. It is engineered to meet or exceed OEM specifications for fit, form, and function.

What are the signs my trim pump bracket needs replacing?

Common signs of a failing bracket include heavy rust or corrosion, visible cracks in the metal, or the trim pump assembly becoming loose in its mounting. A damaged bracket is a safety concern and can cause failure of the trim system.

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.