21777571 Retainer | Genuine Volvo Penta Part

🔧 Product Description

Purpose-shaped retainer that secures a high-pressure or supply fuel pipe in the TAD841-TAD843GE fuel system. Correct support prevents vibration fatigue, fretting and stress at pipe unions.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD841-43GE
• Volvo Penta TAD851-53GE
• Volvo Penta TAD840GE-B

• Engine Family: TAD

⚙️ Key Features

• Factory retention geometry
• Maintains component position
• Controls vibration movement
• Designed for the original mating parts
• Exact schematic position must match

🔌 Function

Holds the assigned component in its designed position under vibration, thermal cycling and operating load.

⚠️ Common Signs of Failure

• Cracking or permanent deformation
• Fretting or witness marks
• Corrosion at the contact points

🛠️ Service Notes

• Fit the retainer clean and dry unless the manual calls for lubricant, and make sure it is fully home in its groove or against its seat before the assembly is loaded
• Renew rather than reuse a retainer that has been removed — once a spring clip or ring has been spread it loses tension and can release in service
• Use the correct pliers or fitting tool; opening a retainer further than it needs to go, or prising it with a screwdriver, distorts it permanently
• Check the groove or landing face for wear, burrs and scoring, and dress or renew the mating part if the retainer will no longer seat squarely
• Where the retainer holds a rotating or spring-loaded part, confirm by hand that the assembly is captive and has the free movement the manual specifies before closing up

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 23406899 - related fuel pipes
• 21746489 - related fuel pipes
• 21746487 - related fuel pipes
• 21770132 - connector
• 21896128 - filter housing
• 22812908 - filter kit
• 21538975 - fuel filter

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging