20405508 Gasket | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Governor Hood Gasket - Position 3 - Part Number: 20405508

Genuine Volvo Penta gasket fitted directly beneath the governor hood at schematic position 3. It seals the removable upper hood to the adjoining governor component.

⚙️ Key Features

• Dedicated mechanical-governor gasket

• Installed at the documented governor schematic position 3

• Suitable for 1500, 1800, 1900 and 2300 rpm governor variants where listed

• Seals fuel, oil, air or control passages within the governor assembly

• Should be renewed whenever the adjoining governor components are separated

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20405508 - current Volvo Penta governor-gasket reference

OEM / Related Numbers:

• 20590563 / 20590571 - related TD/TAD governor references

• 21120693 / 20700657 - related governor references

• 20412752 / 20505913 - related governor covers

• 20460275 - governor housing

• 20405867 / 20405868 - control rods

• 20460068 - related six-point socket screw

Aftermarket / Verified Equivalents:

• None confirmed

🚤 Compatibility

Commonly used on:

• Volvo Penta mechanical fuel-injection pump governor assemblies

Typically suits:

• Engine / equipment models:

• TD520GE

• TAD520GE

• TAD530GE

• TAD531GE

• TD720GE

• TAD720GE

• TAD730GE

• TAD731GE

• D5A-T

• D5A-TA

• D7A-T

• D7A-TA

• D7C-TA

• TAD420VE

• Engine Type: Volvo Penta D4, D5 and D7 mechanical-governed industrial diesel

• Year / Serial Range: Governor model, rated speed, power setting and engine serial-number dependent

🔌 Function

Seals its assigned governor housing or cover joint so the speed-control piston, levers and pressure passages operate without leakage.

Common signs of failure:

• Fuel or oil seepage from the governor

• Unstable idle or governed speed

• Poor throttle response

• Air or contamination entering the governor housing

• Gasket hardening, tearing or extrusion

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging