21614889 Fuel Pipe | Genuine Volvo Penta Part

🔧 Product Description

A precision high-pressure common-rail fuel pipe connecting the rail to injector number 6 on Volvo Penta D8 marine and generating-set engines.

🚤 Compatibility

Typically suits:

• Volvo Penta D8A5-A MH
• Volvo Penta D8A6-A MH
• Volvo Penta D8A5-A MG
• Volvo Penta D8A6-A MG
• Volvo Penta D8A4-A MP
• Volvo Penta D8A3-A MP

• Engine Family: D

⚙️ Key Features

• Dedicated cylinder 6 pipe
• Factory-formed high-pressure steel construction
• Precision sealing cones at both ends
• Must not be bent, reshaped or reused if damaged

🔌 Function

The pipe delivers rail pressure to injector 6 while maintaining the precise sealing and routing required by the common-rail system.

⚠️ Common Signs of Failure

• Diesel leakage or high-pressure fuel spray
• Cylinder 6 misfire

🛠️ 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 / Related Numbers

• 22625707 - Injectors
• 23185947 - Injectors
• 993664 - Injector O-ring
• 21857406 - Injector gasket
• 21453372 - Hexagon socket screw
• 22556900 - Injector yoke
• 21843299 - Socket pipe
• 21442526 - Rubber ring
• 21859185 - Insert sleeve
• 22807245 - Common rail
• 21880675 - Pressure-relief valve
• 21880678 - Rail-pressure sensor

OEM Reman Alternatives

• 3801736 - Remanufactured injectors
• 3801854 - Remanufactured injectors

📦 Condition

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