21179351 Fuel Pipe | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta precision-formed fuel pipe used in the TAD13 common-rail system. The pipe's flare seats, wall thickness and routing are designed for the high cyclic pressure generated by the rail and injector circuit.

⚙️ Key Features

• High-pressure common-rail pipe
• Precision flare seats and controlled internal bore
• Factory bends prevent contact with adjacent lines
• Single-use service practice after loosening is recommended
• Pipe only; rail, injector and clamps are separate
• Engine type: Volvo Penta 12.8-litre common-rail industrial diesel

🔌 Function

Carries high-pressure fuel between the rail and the assigned injector or pump connection without pressure loss.

⚠️ Common Signs of Failure

• Diesel mist or wetness at a flare
• Rail-pressure fault or hard starting
• Crack caused by vibration
• Damaged flare seat after reuse
• Cylinder imbalance from restricted or leaking fuel delivery

🛠️ Service Notes

• Work clean: cap or plug every open union and injector as soon as it is disconnected, and fit the new pipe straight from its packaging — dirt introduced at a fuel joint is the most common cause of trouble afterwards
• Offer the pipe up so it lines up on both unions without strain, and never bend, twist or reshape a pipe to make it fit; a pipe that has been sprung into place fatigues and cracks in service
• High-pressure delivery pipes are treated as single-use in workshop practice — the union faces seal by deforming, so refit new pipes rather than reusing them, and tighten to the figure and sequence in the workshop manual for your engine
• Refit all original support clips and brackets in their proper positions so the pipe cannot chafe or vibrate against surrounding parts
• Bleed the system, then check the joints for leaks with the engine running and again once warm — never search for a diesel leak by hand, since fuel at injection pressure will penetrate skin

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21179351 → Supersedes 3848720

OEM / Related Numbers

• 3848720 earlier number superseded by this part

Other-Brand OEM Numbers

• VOE21179351

📦 Condition

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