# 3861841 Stud | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta stud 74 mm long, from the Marine Propulsion group, weighing 52 grams and listed for 7 applications on the TSK series. It is the short stud of a pair — 3861840 is the same fastener at 88 mm for the same applications.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TSK XXP-A
-   Volvo Penta TSK XXP-ALT
-   Volvo Penta TSK XXP-D3
-   Volvo Penta TSK X-B
-   Volvo Penta TSK X-BLT
-   Volvo Penta TSK XHP-B
-   Volvo Penta TSK XHP-BLT

-   **Engine Family:** TSK

## ⚙️ Key Features

-   74 mm long
-   52 grams
-   7 applications on the TSK series
-   Shorter partner to the 88 mm stud 3861840

## 🔌 Function

Provides a fixed threaded post that a component is located over and clamped down onto with a nut.

## ⚠️ Common Signs of Failure

-   Stud pulled out of its threaded boss with the nut still tight
-   Thread stretched or necked where the nut sits
-   Corrosion seizing the nut so the stud twists out on removal
-   Stud snapped flush with the casting face
-   Nut running out of thread because the stud is too short for the stack

## 🛠️ Service Notes

-   Measure the stud you are replacing — 3861840 is the 88 mm version for the same 7 applications
-   Wind the stud in to the specified depth and never rely on the nut to pull it home

## 📦 Condition

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

## Details

- **Price:** 19.78 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 19.78 AUD | In stock |

## Images

- 3861841 Stud | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3861841-stud-genuine-volvo-penta)
> Updated: 2026-09-07