Polastorm Star stainless steel propeller is a 3-blade, left-hand boat propeller with a diameter of 14" and a pitch of 21". The variant is intended for engines in the 150–200 HP power range with a 4 3/4" gearcase, when using a correct engine-specific hub kit.
The propeller is manufactured from duplex stainless steel according to ASTM A890 Grade 4A. The alloy's high chromium content provides increased corrosion resistance, while the APC manufacturing method, Aerospace Precision Casting, contributes to high material density and physical strength. The surface is high-gloss polished.
The size 14 × 21L indicates a diameter of 14" and a theoretical pitch of 21" per revolution. The L marking identifies the propeller as left-hand/LH, making it suitable for installations requiring this direction of rotation. The propeller's profile corresponds to the Solas New Saturn and Solas Rubex NS3.
The propeller is supplied without a central hub and torsion protection insert. The hub kit is purchased separately and must be selected based on engine brand, engine model, year, propeller shaft, and number of splines. A complete engine-specific kit may include a torsion insert, thrust washer, front washer, spacer, and nut.
Selection of hub kit
Documented hub kit options for 4 3/4" gearcase include item no. 52.580.02 for Mercury with 15 splines, 52.580.03 for Mercury with 19 splines and 1 1/4" shaft, 52.581.03 for Yamaha with 15 splines, 52.583.02 for Tohatsu/Nissan with 15 splines, 52.582.06 for selected BRP, Johnson, and Evinrude engines, and 52.586.01 for Volvo SX Sterndrive with 19 splines. The correct hub kit cannot be selected based on engine power alone.
Cross-references
The manufacturer reference 5886-3140-21 / PS-5886-3140-21 is linked to this 14 × 21L variant. Additional cross-references are Mercury OE 48-16319A46, Quicksilver QS5057X, and Michigan Apollo 993055. Cross-references require verification of the specific application before use.
Always check engine/drive model, rotation direction, shaft, spline count, and original part number before purchase.
Key features3-blade Star propeller
Diameter × pitch: 14 × 21"
Left-hand/LH rotation
Duplex stainless steel, ASTM A890 Grade 4A
APC precision-cast construction
For 4 3/4" gearcase and engines in the 150–200 HP class
Interchangeable engine-specific hub system
Hub kit purchased separately
