17K ½ 13 Propeller
Product description
The 13 ¼ × 17-K propeller, with a longer pitch, higher cruising speed, and outstanding durability in corrosive marine environments, is a reliable choice for upgrading your 85-150 HP boat—whether for fast recreation, passenger transport, or quick fishing trips.
Product Summary
The 13 ¼ × 17-K propeller is designed for Yamaha engines from 85 to 150 HP and delivers maximum efficiency on fast recreational and light commercial boats.
With a diameter of 13 ¼ inches and a 17-K pitch, it provides moderate acceleration and higher cruising speeds (35–45 mph); ideal for long distances or fast water taxi services.
Made from high-pressure cast aluminum with a double-layer epoxy coating, it offers high strength and excellent resistance to saltwater corrosion.
The recommended operating speed is stable at 2250 rpm and it performs without cavitation up to 5500 rpm, enabling full engine power utilization.
Tests at speeds between 35–45 mph show up to a 9% fuel consumption reduction compared to standard 15-pitch propellers.
Technical specifications
| Feature | Value / Description |
| Model | 13 ¼ × 17-K |
| Compatible Engines | Yamaha 85-150 HP (2 & 4 stroke – max 5500 rpm) |
| Propeller Diameter | 13 ¼ inches |
| Pitch | 17-K (for higher cruising speed) |
| Recommended RPM | 2250 rpm (steady cruise) |
| Optimal Speed on Water | 35 – 45 mph |
| Material | High-pressure aluminum + double-layer epoxy coating |
| Application | Fast recreational boats, water taxis, quick fishing tours ≤ 1.5 t load |
| Resistance | Corrosion and sand abrasion resistant |
| Warranty | 12 months |
Statistics are based on factory testing on a 6.5 m fiberglass boat with 5 crew members and 180 kg of side load.
Key technical specifications
Torque
135 Nm
Power
4800-5350 RPM
Material
Aluminium
Flexibility
205 MPa
Endurance
4800 RPM In 150h
Motor Horsepower
80 - 150 HP
Torque
● Three-blade with reinforced hub, despite the longer 17-K pitch, produces useful torque up to 135 N·m at low RPM; enough to lift a fully loaded boat out of the water without cavitation.
● 12° RAKE + hydrodynamic CAMBER smoothly guides water flow in a spiral, reducing energy loss by up to 8% at mid RPM compared to flat blades.
● 12° RAKE + hydrodynamic CAMBER smoothly guides water flow in a spiral, reducing energy loss by up to 8% at mid RPM compared to flat blades.
Horsepower Utilisation
● The 17-K pitch keeps the engine within 4800–5350 RPM (peak power range), ensuring fuel efficiency even at higher speeds.
● Constant speed test at 40 mph with a 115 HP engine recorded fuel consumption of 11.8 L/h—lower than a comparable 15-Pitch propeller.
● No vibration or cavitation observed up to the maximum rated RPM in calm water conditions.
● Constant speed test at 40 mph with a 115 HP engine recorded fuel consumption of 11.8 L/h—lower than a comparable 15-Pitch propeller.
● No vibration or cavitation observed up to the maximum rated RPM in calm water conditions.
Flexibility
● Alloy with 205 MPa strength and 4% elasticity; blades bend under minor impacts but do not break.
● Hot-spun hub with rubber bushing absorbs 65% of torsional shocks, reducing shaft stress.
● Repairable: If bent, can be restored up to three times with one hot straightening (Prop-Tune).
● Hot-spun hub with rubber bushing absorbs 65% of torsional shocks, reducing shaft stress.
● Repairable: If bent, can be restored up to three times with one hot straightening (Prop-Tune).
Durability
● Single-phase coating: epoxy paint; ASTM B117 salt fog resistance up to 800 hours.
● 150-hour continuous test at 4800 RPM showed no change in pitch or surface cracks.
● 150-hour continuous test at 4800 RPM showed no change in pitch or surface cracks.
Colors & Finish
| Recommended Color & Code | Type of Coating & Visual Finish | Suggested Advantage / Application |
|---|---|---|
| Silver Matte | Epoxy powder coating; low light reflection | Matches most fiberglass hulls; hides scratches well |
| Graphite Black | Semi-matte with microcrystal particles | Camouflages on dark transoms; reduces glare |
| Marine Pearl White | Dual-layer pearlescent gloss | Pairs with white hulls; easy salt stain cleanup |
| Navy Blue | Glossy polyurethane coating | Professional look for patrol boats; good underwater visibility |
| Sport Red | Glossy epoxy with UV-resistant pigment | Enhanced safety visibility; ideal for ski & racing boats |
| Aquamarine Green | Semi-transparent metallic overlay | Blends with shallow waters; unique for ecotourism boats |
| Titanium Grey | Hard anodized + clear lacquer | Maximum abrasion resistance; industrial luxury look |
| Solar Gold | Dual-layer metallic powder coating | Eye-catching for exhibitions; reflects warm light |
| Signal Orange | Matte polyurethane, UV-resistant | Best emergency visibility; recommended for rescue teams |
| Thunder Purple | Glossy metallic with dual-tone shimmer | Unique sunlight effect; ideal for custom branding |
Recommended Color & Code:
Silver Matte
Coating Type & Finish:
Epoxy powder coating; low light reflection
Benefit / Suggested Use:
Matches most fiberglass hulls; minimizes visible scratches
Recommended Color & Code:
Graphite Black
Coating Type & Finish:
Semi-matte with microcrystal particles
Benefit / Suggested Use:
Perfect camouflage on dark transom; absorbs light and reduces glare
Recommended Color & Code:
Marine Pearl White
Coating Type & Finish:
Dual-layer pearlescent gloss
Benefit / Suggested Use:
Matches white hulls; easy to clean salt stains
Recommended Color & Code:
Navy Blue
Coating Type & Finish:
Glossy polyurethane coating
Benefit / Suggested Use:
Professional look for patrol boats; better visibility underwater
Recommended Color & Code:
Sport Red
Coating Type & Finish:
Glossy epoxy with UV-resistant pigment
Benefit / Suggested Use:
Increased safety visibility; ideal for ski and racing boats
Recommended Color & Code:
Aquamarine Green
Coating Type & Finish:
Semi-transparent metallic coating
Benefit / Suggested Use:
Blends with shallow waters; unique look for eco-tour boats
Recommended Color & Code:
Titanium Grey
Coating Type & Finish:
Hard anodized + clear lacquer
Benefit / Suggested Use:
Maximum abrasion resistance; premium industrial appearance
Recommended Color & Code:
Solar Gold
Coating Type & Finish:
Dual-layer metallic powder coating
Benefit / Suggested Use:
Eye-catching in exhibitions; reflects warm light
Recommended Color & Code:
Signal Orange
Coating Type & Finish:
Matte UV-resistant polyurethane
Benefit / Suggested Use:
Best emergency visibility; recommended for rescue teams
Recommended Color & Code:
Thunder Purple
Coating Type & Finish:
Metallic gloss with dual-tone spectrum
Benefit / Suggested Use:
Unique sunlit appearance; ideal for custom branding
More Images
Reviews
The general opinion of the user is placed here
Lorem Ipsum is a fake text with an unintelligible simplicity of production of industry Print, and is used by graphic designers, printers and texts Rather, newspapers and magazines in columns and rows as necessary.
Lorem Ipsum is a fake text with an unintelligible simplicity of production of industry Print, and is used by graphic designers, printers and texts Rather, newspapers and magazines in columns and rows as necessary.
Excellent quality of butterflies
Lorem Ipsum is a fake text with an unintelligible simplicity of production of industry Print, and is used by graphic designers, printers printers printers and texts Rather, newspapers newspapers and magazines in columns and rows as necessary.
Lorem Ipsum is a fake text with an unintelligible simplicity of production of industry Print, and is used by graphic designers, printers printers printers and texts Rather, newspapers newspapers and magazines in columns and rows as necessary.
Excellent quality of butterflies
Lorem Ipsum is a fake text with an unintelligible simplicity of production of industry Print, and is used by graphic designers, printers printers printers and texts Rather, newspapers newspapers and magazines in columns and rows as necessary.
Lorem Ipsum is a fake text with an unintelligible simplicity of production of industry Print, and is used by graphic designers, printers printers printers and texts Rather, newspapers newspapers and magazines in columns and rows as necessary.
Available agencies
Koosha agency
Mazandaran branch
Mazandaran, Industries Blvd., corner of fourth alley, first door on the left, No. 17
+71425184697
Mazandaran branch
Mazandaran, Industries Blvd., corner of fourth alley, first door on the left, No. 17
+71425184697
Koosha agency
Mazandaran branch
Mazandaran, Industries Blvd., corner of fourth alley, first door on the left, No. 17
+71425184697
Mazandaran branch
Mazandaran, Industries Blvd., corner of fourth alley, first door on the left, No. 17
+71425184697
Novin agency
Shiraz branch
Shiraz, Industries Blvd., corner of fourth alley, first door on the left, No. 17
+71425184697
Shiraz branch
Shiraz, Industries Blvd., corner of fourth alley, first door on the left, No. 17
+71425184697
