21433621 Propeller Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta IPS3 Type Q1 Front and Rear Propeller Set - Part Number: 21433621

A genuine Volvo Penta matched Type Q1 propeller set for IPS3 / IPS30 pod drives. The forward-facing twin-propeller system uses a matched front and rear NiBrAl propeller pair; mixing Q sizes or using unmatched propellers can prevent the drive from reaching its specified load and engine speed.

Kit Contents:

• 1 × Type Q1 front propeller - 21433601

• 1 × Type Q1 rear propeller - 21433611

• Propeller cone, nuts and installation hardware are serviced separately

• Related IPS3 propeller-cone kit - 21297787

⚙️ Key Features

• Genuine Volvo Penta Type Q1 matched propeller set

• Correct Volvo Penta kit number 21433621

• Nickel-bronze-aluminium construction for strength and corrosion resistance

• Matched contra-rotating front and rear propellers

• Q1 load / pitch class for IPS3 propulsion selection

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21433621 current Type Q1 propeller-set reference

OEM / Related Numbers:

• 21433621

• VOE21433621

• 21433601 front propeller

• 21433611 rear propeller

• 21297787 related propeller-cone kit

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta IPS3 and IPS30 pod-drive propulsion systems

• D13 marine engines coupled to a Q-series forward-facing twin-propeller drive

Typically suits:

• Engine models:

• Volvo Penta IPS900 installations using Type Q propellers

• Volvo Penta IPS1050 installations using Type Q propellers

• Volvo Penta IPS1200 installations using Type Q propellers

• Volvo Penta IPS1350 installations using Type Q propellers

• IPS3 / IPS30 installations calculated for Q1 loading by Volvo Penta propeller selection data

• HP Range: Approximately 700HP - 1,000HP per engine, dependent on IPS rating

• Engine Type: Volvo Penta D13 marine diesel with IPS3 / IPS30 drive

• Year Range: Approximately 2012 onward

• Serial Range: Drive-, gear-ratio-, hull-load- and rated-rpm controlled; replace only with the same Q designation unless the vessel is re-propped by an authorised specialist

🔌 Function

The Q1 front and rear propellers convert drive torque into thrust as a matched contra-rotating pair. Their combined loading is selected so the engine reaches the correct wide-open-throttle speed for the vessel.

Common signs of failure:

• Vibration caused by bent blades, impact damage or an unmatched pair

• Engine cannot reach rated wide-open-throttle rpm

• Cavitation, ventilation or reduced acceleration

• Corrosion, blade-edge erosion or hub damage

• Unequal loading after replacing only one propeller with the wrong Q size

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging