RisWhiteMeteors Outboard Trim & Tilt Motor Replacement for Mercury/Mariner 75-115HP — Pre-filled Hydraulic, Corrosion-Resistant

Replacement electric-hydraulic trim and tilt motor assembly engineered to bolt directly onto Mercury/Mariner 75–115HP outboards, replacing OEM numbers 818903A1, 830250A1, 8M0090335 and 898447T01.

This RisWhiteMeteors assembly restores hydraulic lift and trim control to compatible Mercury and Mariner outboards. It ships as a complete, pre-filled unit with mounting hardware so you can make a straightforward swap of a worn or failed trim/tilt system. Designed for repeated use in both freshwater and saltwater, the unit balances corrosion resistance with reliable lifting torque to reposition your engine angle while running or when raising and lowering for trailering.

How will this replace my existing Mercury/Mariner trim & tilt motor?

The assembly is made to match OEM mounting points and hydraulic fittings so installation is typically a direct bolt-on swap for the listed part numbers. Electrical and hydraulic interfaces align with factory-style connections, reducing modification or fabrication needs.

• Fits Mercury/Mariner 75–115HP models
• Direct replacement for OEM 818903A1, 830250A1, 8M0090335, 898447T01
• Pre-filled hydraulic reservoir and included hardware
• Factory-style electrical connector for plug-and-play

What performance can I expect while trimming and tilting?

You get heavy-duty electric-hydraulic actuation designed to raise and lower the outboard smoothly under load. Proper trim helps optimize running angle, reduce cavitation, and improve fuel economy when used as part of routine trim adjustments.

• Smooth, consistent hydraulic lift and lower motion
• Sized for 75–115HP engine torque and boat transom loads
• Pre-filled hydraulic fluid for immediate operation
• Sealed components to minimize fluid loss and contamination

Is this unit durable for saltwater boating and long-term use?

The assembly uses corrosion-resistant materials and sealed internals to withstand marine environments. While not a factory-branded OEM, its construction focuses on longevity and resistance to saltwater corrosion when maintained properly.

• Durable housing resistant to rust and pitting
• Sealed hydraulic components to protect internal surfaces
• Electrical parts protected against moisture intrusion
• Designed for routine marine maintenance and inspection

What comes in the box and how easy is the installation?

The motor assembly arrives assembled, pre-charged with hydraulic fluid, and includes the fasteners and fittings needed for mounting. Most technicians or mechanically inclined owners can complete the replacement with common hand tools and basic electrical checks.

• Fully assembled motor and hydraulic cylinder
• Pre-filled hydraulic fluid – ready to install
• Mounting bolts and necessary hardware included
• Installation typically follows OEM removal and bolt-on steps

Who is this for: boat owners and marine technicians who need a cost-effective, ready-to-install trim and tilt motor for Mercury or Mariner 75–115HP outboards. It’s intended for people replacing a failed or leaky factory unit who want an assembled, pre-filled hydraulic solution that fits OEM mounting and electrical connections. This product serves as a value-grade alternative to dealer-priced OEM kits while providing the core features required for dependable trim and lift operation. Always verify compatibility with your engine serial and part numbers before purchase and follow marine safety and installation guidelines when working on your outboard.