# 21344784 Stud | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta stud used to locate and retain the valve cover or related cylinder-head hardware on TAD1240GE and D12D-A MG engines. The fixed stud provides repeatable alignment and thread engagement for the cover fastener without repeatedly loading the cylinder-head threads.

## 🚤 Compatibility

-   **Engine Family:** D, TWD, TAD

Full model list at the end of this description.

## ⚙️ Key Features

-   Stud locating and retaining valve cover or related cylinder-head hardware on TAD1240GE and D12D-A MG engines
-   0.093 kg
-   Supersedes 8148863, catalogued earlier as a spacer screw
-   Listed for 27 applications across the D, TWD and TAD ranges
-   9 used per assembly

## 🔌 Function

Provides a fixed threaded location for the valve cover or related cylinder-head hardware, giving repeatable alignment and thread engagement without loading the head threads each time.

## ⚠️ Common Signs of Failure

-   Oil weeping from the cover joint at one fixing
-   Cover fixing that will not tighten, or turns without gaining load
-   Stud found bent, or its thread found stripped or pulled
-   Stud found unscrewing with the nut instead of staying put
-   Head thread found damaged where the stud has pulled on strip-down

## 🛠️ Service Notes

-   It replaces what was catalogued as a spacer screw, so the fastening arrangement may not match the part in your hand - check the illustration before ordering by the old number
-   Set the stud to the specified protrusion and check the head thread before fitting; a stud that keeps backing out means the thread, not the stud

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21344784 → Supersedes 8148863

### OEM / Related Numbers

-   8148863 earlier number superseded by this part
-   20545669 - valve cover
-   21070576 - sealing strips
-   21123014 - sealing strips
-   20807510 - oil filler cap

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D12C-A MP, D12D-A MG, D12D-A MH, D12D-A MP, D12D-B MH, D12D-B MP, D12D-C MH, D12D-C MP, D12D-D MP, D12D-E MG, D12D-E MH, D12D-E MP, D12D-F MP, D12D-G MH, D12D-G MP, D12D-H MP
-   Volvo Penta TAD1241GE, TAD1241VE, TAD1241-42VE
-   Volvo Penta TAD1242GE, TAD1242VE
-   Volvo Penta TAD1250VE, TAD1250-52VE
-   Volvo Penta TAD1240GE
-   Volvo Penta TAD1251VE
-   Volvo Penta TAD1252VE
-   Volvo Penta TWD1240VE

## Details

- **Price:** 50.79 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 50.79 AUD | In stock |

## Images

- 21344784 Stud | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21344784-stud-genuine-volvo-penta)
> Updated: 2026-09-19