20474038 Delivery Pipe Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta delivery pipe kit weighing 0.680 kg, the current replacement for six earlier delivery pipe references, 20363791 to 20363796. It is the lighter of the two kits covering that set; 20474037 is the 0.905 kg alternative. Order by part number and confirm against the engine's parts listing.

🚤 Compatibility

• HP Range: Approximately 500 HP
• Year Range: Approximately 1970s-2000s

⚙️ Key Features

• OEM Volvo Penta part number 20474038
• Supersedes previous part numbers 20363791, 20363792, 20363793, 20363794, 20363795 and 20363796
• System group: Fuel System
• Net weight 0.680 kg - the lighter of the two kits covering this set
• Order by part number: 20474037 replaces the same references

📋 Kit Contents

• 1 x high-pressure delivery pipe for each of cylinders 4-6 - three pipes total; each pipe is serviced only within kit 20474038 and has no separate published Volvo Penta number

🔌 Function

Transfers high-pressure fuel from the injection pump to an injector, sustaining injection pressure without deformation. Its formed run positions the pipe between its two fittings.

⚠️ Common Signs of Failure

• Leakage or seepage at a union nut
• Crack or chafe mark along the pipe
• Single-cylinder misfire
• Damaged union threads
• Distortion from earlier removal

🛠️ Service Notes

• Work scrupulously clean: cap every open union and keep dirt out of the pipes and the components they connect, since a single particle can ruin an injection component
• Fit the pipes new and do not reuse an old one — the sealing cone deforms as it is tightened and will not seal reliably a second time
• Offer each pipe up so it seats in its cone without being sprung or bent to reach, and start the nuts by hand; never use the nut to pull a pipe into line
• Tighten the unions in the order and to the figures given in the workshop manual for your engine, and do not cure a weeping union by pulling it up tighter — renew the pipe
• Bleed the system as the manual directs and check for leaks with the engine running before closing the space up, keeping clear of any high-pressure spray

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20474038 → Supersedes 20363794

OEM / Related Numbers

• Volvo TD120 / TD121 / TID121 / TWD1210 / TWD1211 / TWD1230 delivery-pipe family
• 20474037 complementary cylinder-bank delivery-pipe kit

📦 Condition

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