20556837 Delivery Pipe Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta delivery pipe kit weighing 0.707 kg, replacing three earlier pressure pipe references (20363731, 20363732 and 20363733) used on DH series applications. Its sibling kit 20556838 replaces a different trio of pressure pipes at the same weight, so the part number is the only safe identifier.

🚤 Compatibility

• HP Range: Approximately 285 HP
• Year Range: Approximately 1980s-1990s

⚙️ Key Features

• OEM Volvo Penta part number 20556837
• Supersedes previous pressure pipe numbers 20363731, 20363732 and 20363733
• System group: Fuel System
• Net weight 0.707 kg
• Applies to DH series installations via the superseded references

📋 Kit Contents

• 1 x high-pressure delivery pipe for each of cylinders 1-3 - three pipes total; individual pipes are supplied only within kit 20556837 and do not have separately published service numbers

🔌 Function

Delivers high-pressure fuel from the injection pump to an injector, holding injection pressure along a formed run. Supplied as a kit so the matched set of pipes is renewed together.

⚠️ Common Signs of Failure

• Fuel leakage at a union nut
• Crack, chafe or corrosion along a pipe
• Misfire or rough running on one cylinder
• Union threads damaged or overtightened
• Pipe distorted from previous removal

🛠️ Service Notes

• Kit 20556838 covers a different trio of pressure pipes at the same weight - confirm the part number

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20556837 → Supersedes 20363732 → Supersedes 425672

OEM / Related Numbers

• 20363733 earlier number superseded by this part
• 20363731 earlier number superseded by this part
• 20363732 earlier number superseded by this part
• 425672 earlier number superseded by this part
• 20556838 complementary cylinder-bank delivery-pipe kit

📦 Condition

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