Stainless Steel Floor Mounting Bracket – Fits MerCruiser Sterndrive (Replaces 42419A1, 862548A1)
Stainless Steel Floor Mounting Bracket – Fits MerCruiser Sterndrive (Replaces 42419A1, 862548A1) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Stainless Steel Floor Mounting Bracket – Fits MerCruiser Sterndrive...
Product Details
This high-quality Stainless Steel Floor Mounting Bracket is designed to securely mount the trim and tilt pump assembly in various MerCruiser sterndrive applications. It is engineered for a precise fit on Alpha, MR, R, and Bravo models from 1983 to the present that do not use a quick-release pump mechanism.
It serves as a direct replacement for multiple OEM and aftermarket part numbers, including MerCruiser 42419A1, 862548A1, Sierra 18-6750, and others.
- Constructed from corrosion-resistant 304 stainless steel for maximum durability in marine environments.
- Designed for versatile floor or transom mounting configurations.
- Engineered to match original equipment specifications for a reliable fit.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| MerCruiser | 42419A1 |
| MerCruiser | 862548A1 |
| MerCruiser | 58397A2 |
| MerCruiser | 58397A3 |
| MerCruiser | 88553A1 |
| MerCruiser | 88893A4 |
| Sierra | 18-6750 |
| Sierra | 18-6749 |
| ProTorque | PH200-T066 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This bracket fits a wide range of MerCruiser sterndrives from 1983 to the present, specifically models without a quick-release mechanism. Please verify your OEM part number for an exact match.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | Alpha One | Various | 4-Stroke | 1983–Present | 42419A1, 862548A1 | Without quick release |
| MerCruiser | MR | Various | 4-Stroke | 1983–Present | 42419A1, 862548A1 | Without quick release |
| MerCruiser | Bravo | Various | 4-Stroke | 1983–Present | 42419A1, 862548A1 | Without quick release |
| MerCruiser | R | Various | 4-Stroke | 1983–Present | 42419A1, 862548A1 | Without quick release |
Technical Specs
- Product Type
- Trim Pump Mounting Bracket
- Installation
- Floor or Transom Mount
- Housing Material
- Stainless Steel 304
- Dimensions
- 8-1/2 inches high
- Weight
- 1.16 kg (2.55 lb)
- Key Feature
- High-quality stainless steel construction for superior corrosion resistance and durability in marine environments.
What’s in the Box
- 1 x Stainless Steel Floor Mounting Bracket (Replaces 42419A1/862548A1)
Installation Notes
- Disconnect the vessel's battery before beginning work.
- Carefully disconnect the electrical harness and hydraulic lines from the trim pump motor and reservoir.
- Unbolt and remove the old pump and bracket assembly from the transom or floor.
- Thoroughly clean the mounting surface, removing any old sealant or corrosion.
- Position the new stainless steel bracket and securely fasten it using appropriate marine-grade hardware.
- Mount the trim pump assembly onto the new bracket.
- Reconnect the hydraulic lines and electrical connectors. Ensure all fittings are tight to prevent leaks.
- Reconnect the battery and test the full range of the trim/tilt system to confirm proper operation.
Troubleshooting & FAQ
How do I know if this bracket fits my MerCruiser model?
This bracket is designed for MerCruiser Alpha, MR, R, and Bravo models from 1983–present that do not have a quick-release pump. The best way to confirm fitment is to match your existing part number to one of the direct replacement numbers listed in our Part Number Matrix, such as 42419A1 or 862548A1.
Does this bracket come with mounting hardware?
The package contains the bracket only. Mounting hardware (bolts, nuts, washers) is not specified as included. You may need to reuse your original hardware if it is in good condition or source new marine-grade stainless steel hardware separately.
What's the advantage of stainless steel over the original bracket?
This bracket is made from 304 stainless steel, offering superior corrosion and rust resistance compared to many original painted steel brackets. This ensures greater durability and a longer service life, especially in saltwater environments.
Can this bracket be mounted on the transom?
Yes, this bracket is versatile and can be installed as either a floor or transom mount, depending on your vessel's original configuration.
What are signs that my current trim pump bracket is failing?
Common signs of a failing bracket include visible rust or corrosion, cracks in the metal, and excessive movement or vibration of the trim pump assembly during operation. A compromised bracket can lead to pump misalignment and potential damage to the trim system.
Is this an authentic OEM part?
This is a high-quality aftermarket replacement part, not an OEM component. It is designed and manufactured to meet or exceed original equipment specifications for fit, form, and function, providing a reliable alternative at a great value.
What are your shipping speeds and costs?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most regions; expedited options may be available at checkout.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against your original part before purchase. If anything differs—even if your model appears compatible—do not complete the purchase.
- This is an aftermarket replacement component, not an original equipment manufacturer (OEM) part.
- Professional installation is strongly recommended to ensure safety and proper performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with typical transit times of 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
