21260649 Propeller | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Type I9 Front Aluminium Duoprop Propeller - Part Number: 21260649

Genuine three-blade left-hand front propeller for Volvo Penta Type I9 counter-rotating aluminium Duoprop sets. Type I propellers are designed for DPS and DPS-A drives with straight propeller-shaft splines. This is the front propeller only and it must be paired with rear propeller 21657169 of the same Type I9 designation.

📋 Package Contents

• 1 × Type I9 three-blade front aluminium propeller - Part Number: 21260649

• Matching rear propeller 21657169, complete set 21258489, propeller nuts, tools and installation consumables are not included

⚙️ Key Features

• Type I9 front propeller

• Three-blade, left-hand front propeller

• High-strength squeeze-cast aluminium construction

• Straight-spline DPS/DPS-A hub design

• Matched only with Type I9 rear propeller 21657169

• Four-layer Volvo Penta corrosion-protection paint system

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21260649 - Current Type I9 front-propeller reference

OEM / Related Numbers:

• 21258489 - Complete Type I9 front-and-rear propeller set

• 21657169 - Matching Type I9 rear propeller

• 21631162 - Rear propeller nut

• 3851569 - Front propeller nut

• 3862797 - Front propeller-nut tool

• 3855516 - Combined front/rear propeller tool

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta DPS drives with straight propeller-shaft splines

• Volvo Penta DPS-A drives with straight propeller-shaft splines

• D3 Aquamatic packages from approximately 110HP through 220HP where Type I aluminium propellers are approved

• Petrol Aquamatic packages up to 240HP where Type I aluminium propellers are approved by the propeller calculation

Propeller specification:

• Series: Type I

• Size: I9

• Position: Front

• Blade Count: 3

• Rotation: Left-hand front propeller within the counter-rotating pair

• Material: Aluminium

• Pairing: Rear propeller 21657169

• Complete Set: 21258489

Selection restrictions:

• Do not mix Type I with Type D, F, FH, IH or another I-series size

• Volvo Penta specifies Type F/FH stainless propellers for six-cylinder diesel engines, engines above 240HP or boats capable of more than approximately 38 knots

• Confirm drive model, straight-spline shaft, existing propeller designation and vessel-specific propeller calculation

🔌 Function

The front propeller operates in cleaner water ahead of the rear propeller, produces thrust and conditions water flow for the matched rear propeller. The pair divides torque across the drive for efficient acceleration, cruising and manoeuvring.

Common signs of failure:

• New vibration or pulsing under load

• Reduced acceleration or top speed

• Engine unable to reach specified wide-open-throttle rpm

• Engine over-revving because the propeller load is too light

• Cavitation, ventilation or excessive slip

• Bent, chipped, cracked or heavily corroded blades

• Hub movement or propeller-shaft noise following impact

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging