Tilt Trim Motor with Reservoir – Fits Mercury/Mariner/Force 50–125 HP (Replaces 809885A1, 809885A2)
Tilt Trim Motor with Reservoir – Fits Mercury/Mariner/Force 50–125 HP (Replaces 809885A1, 809885A2) is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Tilt Trim Motor with Reservoir – Fits Mercury/Mariner/Force 50–125 HP (Replaces 809885A1, 809885A2) is backordered and will ship as soon as it is back in stock.
Product Details
This replacement tilt trim motor with reservoir is designed for selected single-ram Mercury, Mariner, and Force 50–125 HP outboards. The complete motor assembly features an integrated reservoir, a 2-wire electrical connection, and a standard 4-bolt mounting pattern.
It is listed as a replacement or interchange for ARCO 6276, Sierra 18-6777, Mercury OEM part numbers 809885A1, 809885A2, 809885T2, 813447, 819479A1, 819480A1, and 885654T1, and QUICKSILVER part number 8M6007531. Always compare the original motor, mounting pattern, shaft interface, wiring, engine model, and year before ordering.
- Complete tilt trim motor and integrated reservoir assembly.
- Standard 4-bolt mount for the listed applications.
- Metal housing with black epoxy powder coating for corrosion resistance.
- 2-wire harness with bullet connectors.
- 12-volt DC reversing motor for tilt and trim operation.
Part Number Matrix
Use these references to compare the replacement with your original component. Part-number matching alone does not confirm fitment; verify the complete engine and installation conditions.
| Brand | Part Number |
|---|---|
| ARCO | 6276 |
| Sierra | 18-6777 |
| Mercury | 809885A1 |
| Mercury | 809885A2 |
| Mercury | 809885T2 |
| Mercury | 813447 |
| Mercury | 819479A1 |
| Mercury | 819480A1 |
| Mercury | 885654T1 |
| QUICKSILVER | 8M6007531 |
Engine & Model Compatibility
The following applications are retained from the available fitment information and are presented as reference leads. Confirm the exact model designation, year, serial-number range, stroke, shaft interface, and original part number before installation.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| FORCE | 507, 508 | 50 | 1991–1992 | 809885A1 | ||
| FORCE | 50EL | 50 | 1993–1994 | 809885A1 | ||
| FORCE | 50ELPT | 50 | 1993–1994 | 809885A1 | ||
| FORCE | 706, 708 | 70 | 1991–1992 | 809885A1 | ||
| FORCE | 70EL | 70 | 1993–1995 | 809885A1 | ||
| FORCE | 70ELPT | 70 | 1993–1995 | 809885A1 | ||
| FORCE | 75EL | 75 | 1996–1999 | 809885A1 | ||
| FORCE | 75ELPT | 75 | 1996–1999 | 809885A1 | ||
| FORCE | 903, 906, 908 | 90 | 1991–1992 | 809885A1 | ||
| FORCE | 90EL | 90 | 1993–1994 | 809885A1 | ||
| FORCE | 90ELPT | 90 | 1993–1999 | 809885A1 | ||
| FORCE | 90EXLPT | 90 | 1993–1999 | 809885A1 | ||
| FORCE | 1201, 1208 | 120 | 1990–1992 | 809885A1 | ||
| FORCE | 120ELPT | 120 | 1993–1999 | 809885A1 | ||
| FORCE | 120EXLPT | 120 | 1993–1999 | 809885A1 | ||
| MERCURY MARINE | 50ELO, 50ELPTO | 50 | 2-Stroke | 1988–1989 | 809885A1 | |
| MERCURY MARINE | 60ELO, 60ELPTO | 60 | 2-Stroke | 1988–1989 | 809885A1 | |
| MERCURY MARINE | 100ELPTO, 100ELXLPTO | 100 | 2-Stroke | 1988–1989 | 809885A1 | |
| MERCURY MARINE | 115ELPTO, 115EXLPTO | 115 | 2-Stroke | 1989 | 809885A1 | |
| MERCURY MARINE | All Models | 50–125 | 809885A1 | Tilt and trim applications; verify the exact model and year. |
Technical Specifications
- Product Type
- Tilt trim motor with integrated reservoir
- Application
- Selected single-ram Mercury, Mariner, and Force 50–125 HP outboards
- Installation
- 4-bolt mount
- Connection
- 2-wire harness with bullet connectors
- Electrical System
- 12-volt DC reversing motor
- Housing Material
- Metal with epoxy powder coating
- Housing Color
- Black
- Dimensions
- Outside diameter: 72.8 mm (2.866 in); length: 175 mm (6.89 in)
- Fitting Type
- Hollow hex shaft
- Warranty
- 1-year limited warranty; extension to 2 years may be available with ARCO registration
What’s in the Box
- 1 × Tilt trim motor with integrated reservoir
- 1 × O-ring
- 1 × Shaft adapter/coupler
- 1 × Hardware kit with mounting screws
- 2 × 3.5-foot wire harnesses with bullet connectors
Installation Notes
- Disconnect the boat battery to prevent electrical shorts. Secure and support the engine before beginning work.
- Access the existing tilt trim motor assembly, removing covers or panels as necessary.
- Disconnect the existing motor wiring and identify the connections before removal.
- Remove the mounting bolts and carefully take out the old motor. Use rags to manage any residual hydraulic fluid.
- Clean the mounting surface and inspect the hydraulic ram seals and shaft interface for wear or damage.
- Position the replacement motor, ensuring that the shaft adapter and O-ring are correctly aligned.
- Secure the motor with the supplied hardware. Tighten fasteners to the torque specified by the applicable service manual.
- Connect the 2-wire harness and ensure that all electrical connections are secure and protected from moisture.
- Reconnect the battery and test the tilt and trim system through its complete range of motion. Check for leaks and smooth operation.
Troubleshooting & FAQ
Will this fit my specific Mercury 75 HP outboard?
It may fit selected Mercury 75 HP applications, but horsepower alone is not sufficient to confirm compatibility. Compare the exact engine model, year, serial-number range, stroke, mounting pattern, shaft interface, wiring, and original part number with the compatibility information before ordering.
Is this a complete unit with the reservoir?
Yes. This listing is for a complete tilt trim motor assembly with an integrated reservoir, rather than a motor-only replacement.
My old motor had different wire connectors. Can I still use this?
This unit uses a 2-wire harness with bullet connectors. If your original wiring differs, an appropriate adapter or professionally made connection may be required. Do not make connections until polarity, wire routing, and weather protection have been verified.
What are signs that my tilt trim motor is failing?
Common symptoms include slow or jerky trim operation, humming or clicking without movement, failure in one or both directions, or visible fluid leakage near the motor and reservoir assembly.
How do I fill the hydraulic fluid?
Use the manufacturer-recommended tilt/trim hydraulic fluid and follow the applicable service-manual procedure. Fill through the designated fill port, cycle the system several times, and recheck the level to help purge trapped air. Do not overfill.
Can I replace just the motor without the whole assembly?
This product is sold as a complete motor and reservoir assembly. Confirm the replacement procedure for your engine before disassembling the original unit.
Is this an OEM part or aftermarket?
This listing is for an aftermarket replacement, not a Mercury, Mariner, Force, or QUICKSILVER OEM component. The listed manufacturer part numbers are reference and interchange numbers only.
What is the shipping speed and cost?
Typical transit is 5–15 days. Standard shipping is free for most regions, and available expedited options are shown at checkout.
What is the warranty and return policy?
The part is covered by a 1-year limited warranty against manufacturing defects under normal marine use. Returns are subject to the applicable store policy and normally require the item to be unused and in its original packaging.
Safety & Important Information
- Verify the original part, dimensions, connector style, mounting pattern, shaft interface, engine model, year, and part number before purchase.
- Do not rely on horsepower alone to confirm fitment.
- This is an aftermarket replacement, not an OEM component.
- Support the engine securely and disconnect the battery before installation.
- Professional installation is recommended for safe and reliable operation.
About Sea Sierra
- Pro-Grade Standards — We supply marine replacement parts designed for demanding real-world conditions.
- Fast Global Fulfillment — Free standard delivery is available to most regions, typically arriving in 5–15 days.
- Manufacturer-Direct Value — Fair pricing on replacement components supported by practical product information.
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.
