20412308 Hexagon Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Turbocharger Mounting Hexagon Nut - Part Number: 20412308

Genuine Volvo Penta hexagon nut used in sets of four on the turbocharger mounting studs of D7 low-mounted turbo installations. It clamps the turbocharger to the exhaust manifold with the specified washers and nut retainers.

⚙️ Key Features

• High-temperature turbocharger mounting nut

• Four used with studs 20412314

• Used with washers 20799731 and nut retainers 20505959

• Confirmed with turbocharger 20500295 / exchange 3802178 and related variants

• Tightening procedure must follow the workshop specification

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20412308 - current Volvo Penta turbocharger nut reference

OEM / Related Numbers:

• 20412314 - turbocharger mounting studs

• 20799731 - washers

• 20505959 - nut retainers

• 20500295 / 3802178 - related turbocharger

• 20405970 - turbocharger gasket

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta D7 exhaust manifold and turbocharger mountings

Typically suits:

• Engine / equipment models:

• TAD720VE

• TAD721VE

• TAD722VE

• TD720GE

• TAD730GE

• TAD731GE

• TAD732GE

• TAD733GE

• Engine Type: Volvo Penta 7-litre turbocharged industrial diesel

• Year / Serial Range: Turbocharger module and engine serial-number dependent

🔌 Function

Provides the clamp load securing the turbocharger to the exhaust manifold.

Common signs of failure:

• Exhaust leakage or soot at the turbo flange

• Nut loosening under heat cycling

• Damaged or seized threads

• Unable to reach specified torque

• Turbocharger flange movement

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging