99661A35 Mercury Swivel Pin Assy | Genuine Used Part

🔧 Product Description

Genuine Mercury Mariner Steering Tube Swivel Pin Assembly - Part Number: 99661A35

A genuine used Mercury Mariner steering-tube swivel assembly for a broad group of 65 Jet and 75HP to 125HP outboards.

The assembly forms the vertical steering pivot between the swivel bracket and engine midsection. It supports steering rotation while carrying engine and trim loads.

⚙️ Key Features

• Genuine Mercury Marine OEM swivel-pin assembly
• Correct current Mercury part number 99661A35
• Supersedes earlier assembly 99661A26
• Used on carburetted, EFI, Jet and 1.5L DFI outboards
• Complete steering-tube and swivel-pivot component

🚤 Compatibility

Commonly used on

• Mercury and Mariner swivel-bracket and steering-arm assemblies
• Three-cylinder, four-cylinder, EFI and 1.5L DFI outboard families

Typically suits

• Engine models:
• 75HP and 90HP carburetted - serial 0T801000 to 1B226999
• 75HP and 90HP three-cylinder - serial 0T980000 to 0T999999 and 1B000001 and above
• 75HP and 90HP three-cylinder - Belgium serial 0P325500 and above
• 65 Jet three-cylinder - serial 0T980000 to 0T999999 and 1B000001 and above
• 115HP and 125HP four-cylinder - serial 0T980000 to 0T999999 and 1B000001 and above
• 115HP and 125HP four-cylinder - Belgium serial 0P325500 and above
• 80 Jet - serial 0T980000 to 0T999999 and 1B000001 and above
• 75HP EFI - serial 1B172291 to 2B094995 across the applicable groups
• 80HP EFI - serial 1B227000 to 2B094995; Belgium 0P459572 to 2B094995
• 90HP EFI - serial 1B172291 to 2B094995
• 100HP EFI - serial 1B227000 to 2B094995; Belgium 0P459572 to 2B094995
• 115HP EFI - serial 0T801000 to 2B094995
• 75HP, 90HP and 115HP 1.5L DFI - serial 0T801000 / 0T980000 through the applicable 1B736885 production groups
• 80 Jet 1.5L DFI - serial 1B586067 to 2B111840
• 125HP 1.5L DFI - serial 1B736885 to 2B112787
• 115 Pro XS 1.5L DFI - serial 1B751825 to 2B123429
• HP Range: 65 Jet / 75HP - 125HP
• Engine Type: Mercury / Mariner two-stroke, EFI and 1.5L DFI outboard
• Year Range: Approximately 2000s - mid-2010s

🔌 Function

The swivel assembly provides the engine's main vertical steering pivot and carries loads between the clamp / swivel bracket and midsection. It must rotate freely while maintaining minimal clearance.

⚠️ Common Signs of Failure

• Steering becomes stiff or seized
• Swivel shaft has excess side movement
• Corrosion damages the tube or bearing surfaces
• Grease passages are blocked
• Engine clunks or shifts at the steering pivot

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 99661A35 → Supersedes 99661A26
• 99661A26 earlier OEM swivel-pin assembly

OEM / Related Numbers

• 99661A35
• 99661A26
• 99661
• Mercury description: Swivel Pin Assembly / Steering Tube Swivel Assembly

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated