48-804974 48-897618A10 Mercury Black Max 8.9 x 8.5 Aluminium Propeller – RH 12 Spline | Genuine Used Part

🔧 Product Description

Genuine Mercury Black Max 8.9 x 8.5 Aluminium Propeller - Part Number: 48-804974 / 48-897618A10

A genuine used Mercury Black Max three-blade right-hand aluminium propeller for 2005-and-newer Mercury and Mariner 8HP and 9.9HP four-stroke standard gearcases.

This 12-spline propeller is shared with corresponding Tohatsu and Nissan-built small-outboard gearcases. It does not fit Mercury 9.9HP BigFoot / ProKicker models that use the larger 14-spline gearcase.

⚙️ Key Features

• Genuine Mercury / Quicksilver Black Max propeller
• 8.9-inch diameter x 8.5-inch pitch
• Three-blade aluminium construction
• Right-hand rotation with 12-tooth shaft application
• Cross-brand Tohatsu, Nissan and Parsun equivalents available

🚤 Compatibility

Commonly used on

• Mercury and Mariner 8HP / 9.9HP four-stroke standard gearcases
• Related Tohatsu and Nissan 8HP / 9.8HP 12-spline small-outboard gearcases

Typically suits

• Engine models:
• Mercury 8HP four-stroke - 2005 onward, standard gearcase
• Mercury 9.9HP four-stroke - 2005 onward, standard gearcase
• Mariner 8HP and 9.9HP four-stroke equivalents
• Tohatsu MFS8 and MFS9.8 four-stroke models using the 12-spline gearcase
• Nissan NSF8 and NSF9.8 four-stroke equivalents
• Excludes Mercury 9.9HP BigFoot / ProKicker 14-spline gearcases
• HP Range: 8HP - 9.9HP
• Engine Type: Mercury / Mariner / Tohatsu / Nissan small four-stroke outboard with 12-spline standard gearcase
• Year Range: Approximately 2005 onward

🔌 Function

The propeller converts engine torque into thrust. The 8.5-inch pitch is the standard 9.9HP option and provides a practical balance of acceleration, cruising and engine RPM for light small-boat applications.

⚠️ Common Signs of Failure

• Blades are bent, chipped, cracked or out of track
• The rubber hub slips and engine RPM rises without matching boat speed
• Propeller vibration increases with engine speed
• Cavitation, ventilation or poor acceleration develops after impact damage
• Hub splines, thrust faces or retaining surfaces are worn or corroded

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 48-897618A10 → Supersedes 48-895183A10
• 48-895183A10 → Supersedes 48-804974001 and 48-804974

OEM / Related Numbers

• 48-804974
• 48-804974001
• 48-895183A10
• 48-897618A10
• 897618A10

Aftermarket / Verified Equivalents

• Tohatsu / Nissan: 3B2B64517-1, 3B2W64517-0 and 3B2W64517-1
• Solas: 5011-085-09 - 8.5-pitch aluminium equivalent
• Polastorm: 9057-3089-09 - 8.9 x 8.5 aluminium equivalent
• Quicksilver: QA2158R - 8.9 x 8.5 aluminium equivalent
• Parsun: F8-04050000
• Recmar: Tohatsu-pattern 3B2B645170 / 3B2W64517-0 replacement

📦 Condition

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