20363786 Delivery Pipe | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta high-pressure injector delivery pipe dedicated to cylinder 6 on later TAD1230G fuel-system installations. It replaces the earlier cylinder-6 pressure pipe 3825055 at the documented serial-number change and is not interchangeable with the pipes for the other cylinders.

🚤 Compatibility

Typically suits:

• Volvo Penta TD121G-87
• Volvo Penta TWD1211V
• Volvo Penta TWD1230VE
• Volvo Penta TWD1210G
• Volvo Penta TWD1210V
• Volvo Penta TWD1211G
• Volvo Penta TD1210G
• Volvo Penta TAD1230G
• Volvo Penta TAD1230V
• Volvo Penta TAD1231GE
• Volvo Penta TAD1232GE

• Engine Family: TD, TWD, TAD
• Serial Range: H=46,5mm. the hight of pressure regulator retainer over the pump housing., SN2120234294-

⚙️ Key Features

• Dedicated cylinder 6 pipe with factory-formed routing
• Later delivery-pipe design used from engine serial number 2120234294
• Replaces earlier cylinder 6 pressure pipe 3825055
• High-pressure seamless steel construction with precision union seats
• Requires all specified two-pipe and four-pipe support clamps
• Engine type: Volvo Penta 12-litre six-cylinder mechanical-injection diesel
• 46.5mm (Volvo assembly listing)

🔌 Function

Carries the timed high-pressure fuel pulse from the matching pump element to the cylinder 6 injector.

⚠️ Common Signs of Failure

• Diesel leakage at either union
• Cylinder-specific misfire or low power
• Pipe cracking from vibration or incorrect clamping
• Fuel spray or injection-pressure loss

🛠️ Service Notes

• Work scrupulously clean — cap or plug every opening as it is broken and let nothing enter the pipe or its unions, because a single particle carried into the injection system will damage what it reaches
• Offer the pipe up so the union faces meet squarely and fit it dry and without strain; never bend, straighten or re-form a delivery pipe to make it reach
• Renew rather than reuse a pipe where the procedure for your engine calls for it — the sealing cone work-hardens in service and often will not seal a second time
• Tighten the unions with the correct socket to the figure in the workshop manual for your engine; under-tightening leaks and over-tightening deforms and cracks the sealing cone
• Never slacken a union to bleed or check a system that is running or still pressurised, and look for leaks only with the engine stopped and the area wiped dry

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20363786 → Supersedes 8193566

OEM / Related Numbers

• 8193566 earlier number superseded by this part
• 8194351 - two-pipe attaching clamps
• 8194327 - two-pipe attaching clamps
• 8194353 - four-pipe attaching clamps
• 8194329 - four-pipe attaching clamps
• 422323 - pipe-support bracket
• 865853 - related injector
• 469455 - injector sealing ring
• 822564 - related leak-off components
• 470185 - related leak-off components

📦 Condition

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