20704079 Feed Line | Genuine Volvo Penta Part

🔧 Product Description

A genuine pressurised lubricating-oil feed line used on the TAD420VE turbocharger installation. It replaces earlier line 20512497 and carries filtered engine oil to the turbocharger bearing housing.

🚤 Compatibility

Typically suits:

• Volvo Penta TD420VE
• Volvo Penta TAD420VE

• Engine Family: TD, TAD

⚙️ Key Features

• Current oil-feed line replacing Volvo Penta 20512497
• Factory-formed routing clears the exhaust manifold and turbocharger hardware
• End fittings match the documented banjo/hollow-screw and turbocharger connections
• Designed for hot pressurised engine-oil service
• Correct support prevents vibration cracking and contact with exhaust heat
• Prime the turbocharger and verify unrestricted oil flow after installation

🔌 Function

Delivers clean pressurised oil to the turbocharger bearings for lubrication and heat removal.

⚠️ Common Signs of Failure

• Oil leakage develops along the line or at a fitting
• Turbocharger noise or bearing damage follows restricted oil supply
• The line is cracked, kinked, carboned or heat-damaged
• Banjo fittings or sealing washers no longer seal
• Oil pressure at the turbocharger remains below specification

🛠️ Service Notes

• This is the pressurised oil feed line to the turbocharger on the TAD420VE, superseding 20512497 — not a return line, so confirm the direction before ordering
• Blow the line through and check it is completely clear before fitting, since a restricted feed starves the turbo bearings quickly; renew the sealing washers at the banjo/hollow-screw connections and route it clear of the exhaust manifold and other hot surfaces

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20704079 → Supersedes 20555498 → Supersedes 20512497

OEM / Related Numbers

• 20555498 earlier number superseded by this part
• 20512497 earlier number superseded by this part
• 20511987 - Related turbocharger references
• 20460944 - Related turbocharger references
• 20460943 - Related exhaust pipe
• 20405590 - Related gaskets
• 20557208 - Related gaskets
• 20512494 - Related oil return lines
• 20586845 - Related oil return lines
• 969011 - Banjo fitting gasket
• 25167 - Related hollow screws
• 20460936 - Related hollow screws
• 20450987 - Related clamps
• 20459181 - Related clamps
• 20459171 - Related nipple
• 20460949 - Related charge-air pipe

📦 Condition

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