Express Mach3 3-Blade Stainless Steel Propeller – 14.25" x 17" | Left Hand (Counter) Rotation

Express Mach3 3-Blade Stainless Steel Propeller – 14.25" x 17" | Left Hand (Counter) Rotation

The Express Mach3 14.25" x 17" Left Hand is the counter-rotation version of the Mach3 14.25x17, designed for twin-engine setups where the port-side engine requires a left-hand (counter-clockwise) rotating propeller. It shares the same TP17™ stainless steel construction, race-proven blade geometry, and performance profile as the right-hand version — delivering maximum top-end speed, sharp acceleration, and precise handling for 90–300+ hp engines with 4.75" gearcases.

If you’re running a single-engine application, see the Express Mach3 14.25" x 17" Right Hand instead.

Key Features

• Left Hand (counter) rotation — Designed for the port-side engine in twin-engine configurations that require counter-rotating props for balanced handling and reduced torque steer.
• Proprietary TP17™ stainless steel — 20% higher chromium content than standard stainless for better corrosion resistance and a higher-gloss finish. Nearly 250% stronger and 5x more durable than conventional stainless steel.
• Performance-tuned pitch, rake, and exhaust vents — Aggressive cup profiles and optimized rake angles maximize speed and handling. Large free-flowing exhaust ports reduce backpressure for improved horsepower delivery and hole shot.
• Race-proven 3-blade design — Optimized for maximum top-end speed with best-in-class acceleration and cornering.
• Wide engine compatibility — Fits COX®, Evinrude®, Honda®, Johnson®, Mariner®, Mercury®, MerCruiser®, Nissan®, OMC®, OXE®, Parsun®, Suzuki®, Tohatsu®, Volvo Penta®, and Yamaha® outboards and sterndrives.

Specifications

• Diameter x Pitch: 14.25" x 17"
• Blades: 3
• Material: TP17™ Stainless Steel
• Rotation: Left Hand (Counter)
• Gearcase Fit: 4.75"
• Engine Range: 90–300+ hp
• Hub System: 500 Series (under 200 hp) or 700 Series (200+ hp) — sold separately

Hub Kit Required

A MasterGuard installation hub kit is required and sold separately. Use the 500 Series for engines under 200 hp, or the 700 Series for engines 200 hp and above. Mercury Verado® and ProXS® owners with a 1.25" fat shaft will need the MasterTorq® 621 FSH Fat Shaft Hub Kit instead. Refer to the application chart for your engine’s required kit number.

• MasterGuard Hub Kit 500 – 500 Series
• MasterGuard Hub Kit 502 – 500 Series
• MasterGuard Hub Kit 506
• MasterGuard Hub Kit 508
• MasterGuard 700 Series Hub Kit – 200+ hp

Right Hand Version & Related Models

• Express Mach3 14.25" x 17" – Right Hand Rotation
• Express Mach3 14.25" x 19" – RH — higher pitch, more top-end speed
• Express Mach3 14.25" x 19" – LH
• Express Mach4 14.5" x 17" – 4-Blade Stainless RH — 4-blade for better load handling and stern lift
• Express Mach4 14.5" x 17" – 4-Blade Stainless LH
• Hustler 14.5" x 17" – 4-Blade Aluminum RH — aluminum option at similar pitch
• Hustler 14.5" x 17" – 4-Blade Aluminum LH

Parts Desk Insights

Best use case: This is the correct prop when a customer with a twin-engine setup needs the port-side (counter-rotation) version to pair with the Mach3 14.25" x 17" RH on the starboard engine. Counter-rotation props are essential for twin-engine balance — running two right-hand props causes torque steer and handling issues. Always confirm which side requires counter rotation before selling. The performance profile is identical to the RH version: a well-rounded mid-pitch stainless prop suited to high-horsepower applications across a wide range of hull types. If the customer needs more top-end speed, step them up to the Mach3 14.25" x 19" LH. For heavy-load or watersports applications, the Mach4 14.5" x 17" LH is worth comparing. Hub kit selection follows the same rules as the RH version — confirm engine HP and shaft type before recommending a kit number.