21906721 Flange Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Drive Bearing-Carrier Flange Screw - Part Number: 21906721

High-strength flange screw used in a Volvo Penta drive bearing-carrier assembly. The integrated flange distributes clamp load and the exact thread, length and material are selected for submerged drive service.

⚙️ Key Features

• Specified thread, length and strength class

• Integrated flange distributes clamp load

• Corrosion-resistant drive-service finish

• Designed for the assigned torque

• Exact drive serial fitment required

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21906721 (current listed OEM reference)

OEM / Related Numbers:

• 21906721

• 3860842 - related service kit

• 3852304 - sleeve

• 3860364 - screw

• 3852565 - O-ring

• 914538 - snap ring

• 3852272 - seal

• 3850853 / 183247 / 3848077 - bearing references

• 21702087 - bearing carrier

• 990859 / 3888122 - alternate flange-screw references used in other serial configurations

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta sterndrive bearing-carrier / gearcase assembly listing screw 21906721

Typically suits:

• Engine / drive models:

• Exact Volvo Penta product / serial configuration listing 21906721

• HP / Rating: Engine or drive rating controlled by the complete product number

• Engine / System Type: Marine sterndrive gearcase

• Year Range: Production configuration controlled; verify by product and serial number

• Serial / Specification Control: Confirm drive model, serial number, screw length and thread. Alternate screw numbers are configuration specific and are not automatic substitutes.

🔌 Function

Clamps the bearing carrier or related drive component to the housing at the specified preload.

Common signs of failure or wear:

• Corroded or seized threads

• Rounded drive head

• Loss of clamp load

• Thread damage in the housing

• Fastener stretch or fracture from incorrect torque

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging