21118819 Pipe | Genuine Volvo Penta Part

🔧 Product Description

Genuine formed pipe used in the crankcase ventilation and separator system of Volvo Penta D11A marine engines. Part number 21118819 replaces earlier pipe 3886543 and connects the breather or separator assembly using the factory routing.

🚤 Compatibility

Typically suits:

• Volvo Penta D11A-A
• Volvo Penta D11A-B
• Volvo Penta D11A-C
• Volvo Penta D11A-E
• Volvo Penta D11A-D MP

• Engine Family: D

⚙️ Key Features

• Current replacement for pipe 3886543
• Used in the D11A crankcase ventilation system
• Factory-formed routing and connection ends
• Resistant to oil mist and engine heat
• Maintains correct breather-system flow

🔌 Function

The pipe carries crankcase vapour or separated oil between the D11A breather-system components.

⚠️ Common Signs of Failure

• Oil mist around the connections
• Cracking from vibration
• Loose or leaking seals
• Increased crankcase fumes
• Restricted breather flow

🛠️ Service Notes

• Offer the pipe up and check it reaches both connections freely before you tighten anything — a rigid pipe pulled into place is a pipe left under permanent strain, and strained pipes crack at the fittings in service
• Renew the sealing washers, O-rings or union seals that go with the pipe rather than reusing the old ones, and make sure the seats, faces and threads are clean
• Keep the ends capped while you work and blow or flush a pipe through before fitting; anything left inside goes straight into the oil, fuel or coolant system
• Tighten unions and banjo bolts evenly to the figures in the workshop manual for your engine — overtightening distorts the seat and starts the leak you were trying to cure
• Refit every clip and support bracket in its original place and keep the pipe clear of hot or moving parts so it cannot chafe or be shaken to failure

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21118819 → Supersedes 3886543

OEM / Related Numbers

• 3886543 earlier number superseded by this part
• 20707295 - Related oil separator
• 40005746 - Related pipe
• 20555696 - Related sealing ring
• 3889437 - Related hose
• 3886236 - Related hose

📦 Condition

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