21277478 Cross Recessed Screw | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Seawater-Pump / Cooling Cover Screw - Part Number: 21277478

Genuine Volvo Penta cross-recessed retaining screw used in the D11 seawater-pump or adjacent cooling-cover assembly. Its length, thread and head profile are selected for the specified cover or cam and must not be replaced with an incorrect general-purpose screw.

⚙️ Key Features

• Genuine Volvo Penta retaining screw

• Associated with the D11 seawater-pump service area

• Correct thread length and head profile

• Marine corrosion-resistant specification

• Tighten to the specified torque without damaging the recess

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21277478 (current listed OEM reference)

OEM / Related Numbers:

• 21277456 - associated cover

• 21277458 - seawater-pump cam

• 21219723 - associated seawater pump

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta D11 marine seawater-pump / cooling-system hardware

Typically suits:

• Engine models:

• D11 marine engine product numbers whose pump schematic lists screw 21277478

• Serial / Specification Control: Pump or cover revision and engine serial number control fitment.

• HP Range: D11 marine rating dependent

• Engine Type: Volvo Penta D11 inline-six marine diesel

• Year Range: D11 pump and engine-serial controlled

🔌 Function

Secures the assigned pump cam or cover component while maintaining the designed clamping load.

Common signs of failure:

• Abnormal noise, vibration or free play

• Visible wear, scoring, cracking or deformation

• Misalignment or contact with adjacent parts

• Loss of the component's intended movement or retention

• Damage found during inspection or disassembly

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging