21808216 Propeller | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta four-blade nibral propeller for Volvo Penta IPS 15, the rear half of the type N6 counter-rotating pair. It is machined from the specially developed nibral (nickel-bronze-aluminium) alloy Volvo Penta uses for its IPS propellers, which gives minimum growth, excellent durability and corrosion resistance. Volvo Penta IPS turns the propellers round to a forward-facing position, so the twin counter-rotating propellers pull the boat through the water rather than push it, and optimal interaction between the front and rear propeller holds performance and fuel efficiency across the whole speed range. The rear propeller carries the patented flow deflector, which controls the water flow and minimizes pressure and wear on the propeller shaft seals.

🚤 Compatibility

Typically suits:

• Volvo Penta IPS15-C
• Volvo Penta D8A2-A MP
• Volvo Penta D8A4-A MP
• Volvo Penta IPS15-B
• Volvo Penta IPS15-A
• Volvo Penta D8A8-A MP

• Engine Family: IPS, D

⚙️ Key Features

• Type N6 rear propeller for Volvo Penta IPS 15
• Four blade design in Nibral nickel bronze aluminium
• For D8 engine packages
• 16.638 kg
• Type N and NS are DNV type approved for D8 IPS600, IPS650 and IPS700
• Matching Type N6 front propeller is 21808196; complete set is 21808226
• Includes line cutter
• Includes flow deflector to reduce shaft seal wear
• Type N6 rear propeller, four-blade.
• Extremely strong and specially developed nibral (nickel-bronze-aluminium) alloy.
• Minimum growth, excellent durability and corrosion resistance.
• Fully CNC machined and precisely balanced.
• Patented flow deflector minimizes pressure and wear on propeller shaft seals.
• The type N/NS propeller is type approved by DNV for D8 IPS600, IPS650 and IPS700.
• Material: nibral
• Fits: Volvo Penta IPS 15 (D8 engines)
• Type: N6
• Set contains: set 21808226, front 21808196

📋 Kit Contents

• 1 × Type N6 rear Nibral propeller - 21808216
• Matching front propeller 21808196, complete set 21808226, cone, nuts and locking hardware are not included

🔌 Function

Turns the opposite way behind the front propeller, recovering the swirl left in its wash and adding it back as thrust, which is what gives the counter-rotating pair its grip and cancels the sideways pull of a single propeller.

⚠️ Common Signs of Failure

• A grumble or buzz from the drive that comes and goes with load
• Vibration through the hull that follows engine speed
• Blade edges nicked, bent back or eaten away by cavitation erosion
• Rope, netting or fishing line wound in between the propeller and the drive housing
• On a twin installation, one drive pulling different engine speed from the other at the same throttle

🛠️ Service Notes

• Keep the pair to the same Type code - the range runs NS4, NS5, N1, N2, N3, N4, N5, N6 and N7, and running one code against another changes how the load is split between the two propellers
• The IPS 15 line cutter mounts to the rear propeller on the existing locking bolts, two per drive at 105 mm in 316 stainless steel, and adds no drag or fuel consumption
• Fit front and rear to the same type code - complete set 21808226.
• Line cutter 21913550 is the one listed for Volvo Penta IPS 15.

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21808196 - matching Type N6 front propeller
• 21808226 - complete matched Type N6 front-and-rear propeller set
• 21815881 - propeller spinner / cone
• 21815875 - front propeller nut
• 21815872 - rear propeller nut
• 21816205 - felt washer
• 21808200 - flow deflector

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging