Mercury Black Max 12-3/4x 21P Propeller 48 - 77348A45

Mercury Black Max 3-blade aluminum propeller designed for dependable marine performance and value

Mercury part number 48-77348A45 for accurate product identification and ordering

12-3/4-inch diameter propeller with a 21-inch pitch

Standard right-hand rotation for compatible marine engine applications

Made from Mercury’s patented Mercalloy aluminum for strength and durability

Thin blade design helps reduce drag and improve overall propeller efficiency

Well-balanced construction supports smooth acceleration, handling, and engine performance

Recommended for engines under 250 horsepower

Ideal for boats with top speeds below 50 MPH or 80 KPH

Three-blade die-cast aluminum construction provides reliable everyday performance

Designed to offer a strong balance of speed, durability, and affordability

Easy to maintain and repair compared with many stainless steel propellers

Great replacement option for damaged, worn, or underperforming boat propellers

Suitable for recreational boating, cruising, fishing, and general marine use

Helps deliver consistent performance across a variety of normal boating conditions

Black finish provides a clean factory-style appearance

Always verify engine compatibility, hub requirements, diameter, pitch, and rotation before purchase