21246409 Flange Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Flange Nut - Part Number: 21246409

Genuine flanged retaining nut used in the seawater-pump drive and mechanical fuel-control assemblies of Volvo Penta compact marine diesel engines. The integrated flange distributes the clamping force over the adjoining component.

⚙️ Key Features

• Genuine Volvo Penta flange nut

• Integrated load-spreading flange

• Used in seawater-pump and governor assemblies

• Correct OEM thread and locking profile

• Suitable for continuous marine-engine vibration

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Current OEM reference: 21246409

OEM / Related Numbers:

• 21246409

Related Seawater-Pump Parts:

• Seawater Pump: 3593654

• Pump Drive Gear: 3580062

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Confirmed applications include:

• D1-13B seawater-pump assembly

• D1-13F

• D1-20F

• D1-30F

• D2-40F governor and fuel-regulation assemblies

🔌 Function

The nut retains the designated shaft, gear or control component while its flange spreads the tightening load across the mating surface.

Common signs that replacement is required:

• Damaged threads

• Rounded flats

• Distorted flange

• Nut repeatedly loosening

• Corrosion or galling

• Inability to reach or retain specified torque

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging