21629173 Propeller Blade Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 16 x 10 Left-Hand Two-Blade Folding Propeller Blade Kit - Part Number: 21629173

A genuine Volvo Penta matched pair of Nibral folding propeller blades with a 16-inch nominal diameter, 10-inch pitch and left-hand rotation for S-drive and shaft-drive sailing installations.

The blades fold closely behind the hub while sailing to reduce drag and open automatically when the engine is engaged. A complete propeller requires this blade kit and the correct Volvo Penta hub kit.

⚙️ Key Features

• Genuine Volvo Penta OEM folding-propeller blade kit

• Correct Volvo Penta part number 21629173

• 16 x 10 left-hand blade specification

• Matched two-blade Nibral construction

• Compatible hub family: 21630720 S-drive hub kit or shaft hub kits 21630721-21630725

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21629173 current Volvo Penta blade-kit reference

• No earlier complete blade-kit supersession published

OEM / Related Numbers:

• 21629173

• 21626924 related blade pivot / shaft pin used in Volvo hub kits

• 3595221 related blade locking screw used in Volvo hub kits

• 21630720 S-drive hub kit or shaft hub kits 21630721-21630725

Kit Contents:

• Matched 16 x 10 left-hand Nibral folding propeller blade - supplied under kit number 21629173 - quantity 2; no separate Volvo blade number published

• Hex key for the blade locking screws - quantity 1; no separate Volvo service number published

• Volvo propeller grease pack - quantity 1; no separate service number published for the included pack

• Installation instructions - quantity 1; no separate part number

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta S-drive and shaft-drive sailing propeller installations

• Low-drag auxiliary propulsion for sailing yachts

• Replacement of a matched folding-blade pair of the same diameter, pitch and rotation

Typically suits:

• Engine / Drive models:

• 110S / 120S / MS25S / 130S / 150S with hub kit 21630720

• Shaft-drive installations using hub kits 21630721-21630725

• MD1B / MD2B / MD3B shaft-drive installations within the approved power range

• MD5A / MD5B / MD5C

• MD6A / MD6B

• MD7A / MD7B

• MD11C / MD11D

• MD17C / MD17D

• 2001 / 2001B / 2001D

• 2002 / 2002B / 2002D

• 2003 / 2003B / 2003D

• MD2010

• MD2020

• MD2030

• MD2040

• D1-13 / D1-13F

• D1-20 / D1-20F

• D1-30 / D1-30F

• D2-40 / D2-40B / D2-40F

• Propeller Selection Notes:

• Nominal size: 16-inch diameter x 10-inch pitch.

• Rotation: Left-Hand viewed from astern in ahead gear.

• Final selection must match engine rated RPM, reduction ratio, vessel displacement and shaft or S-drive rotation.

• Do not combine one new blade with one worn blade or mix different blade-kit numbers on the same hub.

• HP Range: Approximately 5HP-40HP

• Engine / Drive Type: Volvo Penta sailing auxiliary engine with S-drive and shaft-drive folding-propeller installation

• Year Range: Approximately 1970s onward; final sizing is controlled by engine, reduction ratio and vessel data

🔌 Function

When the engine is engaged, centrifugal and hydrodynamic force open the blades to produce ahead or astern thrust. Under sail, the blades fold aft to reduce drag and improve sailing performance.

Common signs of failure or incorrect fitment:

• Blade bent, cracked, chipped or heavily eroded after impact

• Hinge bore, pivot pin or locking screw worn

• Blades do not open or fold evenly

• Vibration caused by unequal blade weight or damage

• Engine cannot reach rated RPM because pitch, diameter or rotation is incorrect

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging