# 977581 Stud | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta stud weighing 0.025 kg and listed for 29 applications across TAD, D and TWD engines. No thread size or length is published against this number, so order it by part number rather than by matching a stud out of the stores.

## 🚤 Compatibility

-   **Engine Family:** TAD, D, TWD
-   **HP Range:** 140-220 HP

Full model list at the end of this description.

## ⚙️ Key Features

-   Fits 29 applications across TAD, D and TWD engines
-   0.025 kg
-   No published thread or length — order by part number
-   Quantity varies by assembly, most commonly two

## 🔌 Function

Gives a permanent threaded anchor in a casting so a component can be clamped down with a nut instead of a bolt, keeping the tapped hole out of the wear cycle.

## ⚠️ Common Signs of Failure

-   Nut will not pull up tight, or works loose in service
-   Thread stripped, or the crests rounded off
-   Stud backs out of the casting when the nut is undone
-   Corrosion or seizure where the stud enters the casting
-   Stud snapped off, leaving the stub in the block

## 🛠️ Service Notes

-   Check the tapped hole in the casting before fitting — a stud is only as good as the thread it screws into
-   If several studs on the same joint are corroded, renew the set rather than the one that broke

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H
-   Volvo Penta TAD840GE, TAD840-43VE, TAD840GE-B
-   Volvo Penta TAD570-72VE, TAD570-71VE-B
-   Volvo Penta TAD540-42VE
-   Volvo Penta TAD550-51VE
-   Volvo Penta TAD552VE
-   Volvo Penta TAD841-43GE
-   Volvo Penta TAD850-52VE
-   Volvo Penta TAD851-53GE
-   Volvo Penta TAD853VE
-   Volvo Penta TAD870-73VE
-   Volvo Penta TWD1643GE
-   Volvo Penta TWD1644-45GE
-   Volvo Penta TWD1652GE
-   Volvo Penta TWD1653GE
-   Volvo Penta TWD1663GE
-   Volvo Penta TWD1672-1673GE
-   Volvo Penta TWD1682-83GE
-   Volvo Penta TWD1683GE-B

## Details

- **Price:** 13.21 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 13.21 AUD | In stock |

## Images

- 977581 Stud | Genuine Volvo Penta Part
- 977581 Stud | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/977581-stud-genuine-volvo-penta)
> Updated: 2026-09-19