Turning Point Express® Mach3™ - Left Hand - Stainless Steel Propeller - EX-1421-L - 3-Blade - 14.25" x 21 Pitch

The Turning Point Express® Mach3™ Left Hand Stainless Steel Propeller EX-1421-L is a precision-engineered marine propeller designed for boaters and marine mechanics seeking reliable performance and durability in freshwater and saltwater environments. This left-hand rotation propeller serves as a direct replacement for OEM equipment or as an upgrade for outboard and inboard/outboard engines requiring exact blade geometry and rotational direction. Whether you're optimizing fuel efficiency, improving acceleration, or replacing a damaged prop, the Mach3™ series delivers consistent thrust characteristics essential for safe boat handling and performance tuning.

Constructed from marine-grade stainless steel, the Turning Point Express® Mach3™ features a three-blade design with a 14.25-inch diameter and 21-pitch specification, which means the prop advances 21 inches through the water per complete revolution under ideal conditions. Stainless steel construction resists corrosion, fatigue, and impact damage far better than aluminum alternatives, making it the preferred choice for saltwater applications and high-use environments. The Mach3™ blade profile is optimized for mid-range RPM operation, balancing top-end speed with low-end hole-shot acceleration—critical factors when matching propeller pitch to engine power, boat weight, and intended use. Left-hand (counter-clockwise) rotation ensures compatibility with engines configured for port-side propeller rotation, essential for dual-engine setups or replacement scenarios where directional match is non-negotiable.

Marine technicians and recreational boaters benefit most from this propeller when seeking a balanced, corrosion-resistant upgrade or direct OEM replacement for mid-sized outboards and sterndrive systems. Before installation, verify engine displacement, maximum RPM range, and gear ratio specifications to confirm the 21-pitch rating aligns with your power curve; incorrect pitch selection results in over-revving or insufficient acceleration. Ensure the spline and hub configuration match your engine's gearcase exactly—this propeller is engineered for specific Turning Point compatible shafts and cannot be force-fitted to incompatible platforms. Proper installation with anti-corrosion grease and secure fastening is essential for optimal balance, reduced vibration, and extended service life in marine environments.