21257650 Pipe | Genuine Volvo Penta Part

🔧 Product Description

Genuine companion intake pipe used in the supercharger and inlet-silencer assembly of Volvo Penta D11 engines.

🚤 Compatibility

Typically suits:

• Volvo Penta D11A-C MP
• Volvo Penta D11A-D MP
• Volvo Penta D11A-C (IPS)

• Engine Family: D

⚙️ Key Features

• Genuine Volvo Penta rigid air pipe
• Correct D11 installation profile
• Used between supercharger-system components
• Pressure-resistant construction
• Matches hose 470327 and clamps 995045

🔌 Function

The pipe forms part of the sealed intake route that carries air to or from the engine supercharger.

⚠️ Common Signs of Failure

• Air leakage
• Reduced boost
• Loose connections
• Oily residue around hose joints
• Black smoke or reduced power under load

🛠️ 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

📦 Condition

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