Volvo IPS NS4 Rear Propeller 21915994

Volvo Penta IPS NS4 Rear Propeller 21915994 | IPS-15 DuoProp

The Volvo IPS NS4 Rear Propeller 21915994 is a genuine OEM NiBral propeller engineered for Volvo Penta IPS pod drive systems. Featuring a precision-balanced 4-blade aft design, the NS series is optimized for reduced noise, minimal vibration, and enhanced onboard comfort while maintaining strong propulsion efficiency. This propeller operates in conjunction with a forward-facing front propeller in a counter-rotating system to improve thrust distribution, fuel economy, and vessel handling. Manufactured from high-strength nickel-aluminum-bronze (NiBral), it provides excellent durability and corrosion resistance in demanding marine environments. The NS4 configuration is ideal for applications requiring smooth, quiet performance with dependable mid-range thrust and control.

Genuine OEM Volvo Penta Type NS4 series NiBral Propellers. Available sets include, N1, N2, N3, N4, N5, N6 ,N7, NS4. NS5.

Core Specifications

• Part Number: 21915994
• Application: Volvo Penta IPS-15 pod drives
• Prop Type: NS4 (Type N series)
• Position: Front propeller (forward-facing)
• Blade Count: 4 blades (REAR)
• Material: NiBral (Nickel-Aluminum-Bronze)
• Configuration: Part of a counter-rotating Duoprop set (paired with 4-blade rear prop)