20759469 Leak-Off Line | Genuine Volvo Penta Part

🔧 Product Description

Application-specific injector leak-off line used in the mechanical injection-pump, injector leak-off and high-pressure fuel piping on the listed Volvo Penta engines. Collects injector leakage fuel and returns it to the low-pressure side of the mechanical fuel system.

🚤 Compatibility

Typically suits:

• Volvo Penta D5A-T
• Volvo Penta D5A-TA
• Volvo Penta D7A-T
• Volvo Penta D7A-TA
• Volvo Penta D7C-TA
• Volvo Penta MD2010
• Volvo Penta MD2010B

• Engine Family: D, MD
• HP Range: Approximately 100-250 HP
• Year Range: Approximately 1998 - 2008

⚙️ Key Features

• Genuine Volvo Penta injector leak-off line
• Designed for the mechanical injection-pump, injector leak-off and high-pressure fuel piping
• Collects injector leakage fuel and returns it to the low-pressure side of the mechanical fuel system
• Jacketed pressure-pipe arrangements use engine-specific serial breaks, including D5A T-A SN 980120-, D5A TA-A SN 991715-, D7A T-A SN 975806-, D7C TA-A SN 977117- and D7A TA-A SN 977118-.
• Engine type: Four- and six-cylinder mechanically injected industrial diesel
• 4 used per assembly

🔌 Function

Collects injector leakage fuel and returns it to the low-pressure side of the mechanical fuel system.

⚠️ Common Signs of Failure

• Diesel smell and wet fuel tracking down from the injector heads
• Fuel pooling in the rocker cover recess or on top of the engine
• Air drawn into the low-pressure side, giving rough running or hard restarts
• On strip-down the line is cracked at a bend or at a union, or the sealing washers are flattened and leaking
• Chafed or corroded pipe wall where it has rubbed against adjacent components

🛠️ Service Notes

• Renew all disturbed sealing washers, O-rings, grommets and hose clamps.
• Confirm the pipe is naturally aligned before tightening; do not pull it into position with the fasteners.

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20759469 → Supersedes 888764

OEM / Related Numbers

• 888764 earlier number superseded by this part
• 20500360 - injection pump
• 888874 - injector
• 888761 - injector nozzle
• 11700426 - injector sealing washer
• 11700424 - pipe retainer/bracket
• 20405559 - six-point screw
• 20405847 - delivery valve
• 888768 - leak-off pipes
• 888875 - leak-off pipes
• 888762 - delivery pipe
• 888766 - hollow screws
• 888767 - hollow screws
• 969011 - sealing gaskets
• 947620 - sealing gaskets

Other-Brand OEM Numbers

• VOE20759469 - Volvo CE prefixed number format

OEM Reman Alternatives

• 3803967 - exchange injection pump

📦 Condition

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