823653A9 Aftermarket Mercury Outboard Oildyne Power Trim Pump & Motor Assembly 225-275HP | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Oildyne Hydraulic Trim Pump and Motor Assembly - Replaces Part Number: 823653A9

New aftermarket hydraulic pump, reservoir and motor assembly replacing Mercury 823653A9. It is used on late 225HP-275HP outboards with the Oildyne-style power trim system and is not a MerCruiser motor-only part.

⚙️ Key Features

• Complete 12-volt motor, pump and reservoir assembly

• Oildyne-style hydraulic pump

• Ring-terminal electrical leads

• Designed for late 225HP-275HP Mercury/Mariner outboards

• Cross-references Sierra 18-6765 and ARCO 6270

🧰 Kit / Assembly Contents

• 1 × Complete hydraulic pump and trim motor assembly - P/N 823653A9

• 1 × Integrated hydraulic reservoir

• 1 × Reversible 12-volt electric motor

• 1 × Pump manifold and internal valves

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 823653A9 → Supersedes/cross-references 823653A5, 92459A3, 92459A4, 92459A8 and 85539A2

OEM / Related Numbers:

• 823653A5

• 92459A3

• 92459A4

• 92459A8

• 85539A2

• 17649A02

Aftermarket / Verified Equivalents:

• Sierra: 18-6765

• ARCO: 6270

• API Marine: PT501N / PT503 family

• Recmar: REC823653A9

🚤 Compatibility

Commonly used on:

• Mercury/Mariner high-output outboard power trim systems

Typically suits:

• Engine / Drive models:

• Late 225HP, 250HP and 275HP outboards using an Oildyne pump

• 3.4L V6 applications where 823653A9/92459A4 is specified

• HP / Drive Range: 225HP - 275HP

• System Type: Complete outboard hydraulic trim pump and motor assembly

• Year Range: Model- and serial-dependent

• Serial / Component Identification: Corrected classification: complete Mercury hydraulic pump assembly, not MerCruiser motor-only.

🔌 Function

The complete hydraulic pump assembly uses a reversible electric motor, reservoir, pump gears and valve body to direct pressurised fluid through the power trim circuit and hold the selected engine or drive position.

Common signs of failure / service requirement:

• Trim does not operate in either direction

• Motor runs but the hydraulic system does not build pressure

• Hydraulic fluid leaks from the reservoir, manifold or pump seals

• Trim movement is slow, noisy or intermittent

• Engine or drive drifts down after trimming

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging