# 20412314 Stud | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta high-temperature stud used in sets of four to mount the turbocharger to the exhaust manifold on D7 engines. It is used with nuts 20412308, washers 20799731 and nut retainers 20505959.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD620VE
-   Volvo Penta TAD650VE
-   Volvo Penta TAD660VE
-   Volvo Penta TAD720GE
-   Volvo Penta TAD720VE
-   Volvo Penta TAD721GE
-   Volvo Penta TAD721VE
-   Volvo Penta TAD722GE
-   Volvo Penta TAD722VE
-   Volvo Penta TAD730GE MECH
-   Volvo Penta TAD730GE EDC4
-   Volvo Penta TAD731GE MECH
-   Volvo Penta TAD731GE EDC4
-   Volvo Penta TAD732GE EDC4
-   Volvo Penta TAD733GE EDC4
-   Volvo Penta TAD765VE
-   Volvo Penta TAD764VE
-   Volvo Penta TAD763VE
-   Volvo Penta TAD762VE
-   Volvo Penta TAD761VE

-   **Engine Family:** TAD

## ⚙️ Key Features

-   High-temperature turbocharger mounting stud
-   Four used in the applicable turbo installation
-   Works with hexagon nuts 20412308
-   Used with washers 20799731 and nut retainers 20505959
-   Stud threads and installed height must meet the workshop specification
-   Engine type: Volvo Penta 7-litre turbocharged industrial diesel
-   4 used per assembly

## 🔌 Function

Provides the threaded mounting points that clamp the turbocharger to the exhaust manifold.

## ⚠️ Common Signs of Failure

-   Stud stretching or thread damage
-   Exhaust leakage from lost clamp load
-   Stud seized in the manifold
-   Broken stud during removal
-   Turbocharger flange movement

## 🛠️ Service Notes

-   Clean and chase the female thread before fitting so the stud can pull down square and to full depth
-   Screw studs in with a proper stud installer or the double-nut method; gripping the plain shank with pliers or self-grips scores it and the nut will never seat or torque correctly afterwards
-   Screw the stud home until it seats as the manual for your engine describes, and no further — a stud wound in hard to cure a slack thread will simply split the casting
-   Renew studs that are stretched, necked, bent or corroded rather than reusing them; exhaust and manifold studs in particular are cheap next to the work of extracting a broken one
-   Tighten the nuts to the torque figures and in the sequence given in the workshop manual for your engine, and where a stud passes into an oil or coolant space seal it as the manual specifies

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   20412314 → Supersedes 20799733

### OEM / Related Numbers

-   20799733 earlier number superseded by this part
-   20412308 - mounting nuts
-   20799731 - washers
-   20505959 - nut retainers
-   20500295 - related turbocharger
-   3802178 - related turbocharger
-   20405970 - turbo gasket

## 📦 Condition

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

## Details

- **Price:** 11.54 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 11.54 AUD | In stock |

## Images

- 20412314 Stud | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20412314-stud-genuine-volvo-penta)
> Updated: 2026-10-10