# 3856129 Bolt | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta bolt 29 mm long, from the Ignition and Control Systems group, weighing 23 grams and listed for 75 applications. It supersedes part number 3853196, which was catalogued earlier as a screw.

## 🚤 Compatibility

Full model list at the end of this description.

## ⚙️ Key Features

-   29 mm long
-   23 grams
-   Supersedes 3853196
-   75 applications
-   L=29mm (Volvo assembly listing)
-   Quantity varies by assembly, most commonly one

## 🔌 Function

Clamps an ignition or control component to its mounting so it stays located and correctly earthed through the joint.

## ⚠️ Common Signs of Failure

-   Component loose or moving on its mounting
-   Intermittent electrical faults from a poor joint
-   Corrosion in the thread or under the head
-   Thread stripped or the head pulled
-   Head rounded off on removal

## 🛠️ Service Notes

-   Order by the 29 mm length, as several bolts in this range differ only in length and the published weights are rounded figures
-   Make sure the mating faces are clean if the joint also carries an electrical earth

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3856129 → Supersedes 3853196 → Supersedes 855824

### OEM / Related Numbers

-   3853196 earlier number superseded by this part
-   855824 earlier number superseded by this part

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta 8.2GLIMDM, 7.4GLIMDM, 7.4GLINCS, 7.4GLPLKE, 7.4GLPMDA, 7.4GLPMDM, 5.7GLPMDA, 5.7GSiCPLKD, 5.7GSiPLKD, 5.7GSiPLKE, 5.7GSPBYC, 5.7GSPEFS, 5.7GSPWTR, 5.7GLPNCS, 5.7GiPLKDCE, 5.7GiPLKECE, 5.7GiIMDA, 5.7GiINCCCE, 5.7GiPHUS, 5.7GiPMDA, 5.7GiPMDACE, 5.7GiPNCACE, 5.7GiPNCSCE, 5.7GiPNCBCE, 5.7GIPNCMCE, 5.7GL-A, 5.7GL-B, 5.7GL-C, 5.7GLiPLKDCE, 5.7GSPLKD, 5.7GSPLKE, 5.7GLPLKR, 5.7GLPLKA, 5.7GLPLKD, 5.7GLPLKE, 5.0GL-A, 5.0GL-B, 5.0GL-C, 5.0GLPBYC, 5.0GLPEFS, 5.0GLPWTR, 4.3GIJBYA, 4.3GIPBYCCE, 4.3GIPEFS, 4.3GIPLKDCE, 4.3GIPLKECE, 4.3GIPNCSCE, 4.3GIPNCBCE, 4.3GIPWTRCE, 4.3GiJWTR, 4.3GL-A, 4.3GL-B, 4.3GLPBYC, 4.3GLPEFS, 4.3GLPLKD, 4.3GLPLKE, 4.3GLPNCS, 4.3GLPNCB, 4.3GLPWTR, 4.3GSPBYC, 4.3GSJBYA, 4.3GSJLKD, 4.3GSPLKD, 4.3GSPLKE, 4.3GSPNCS, 4.3GSPNCB, 4.3GSJNCC, 4.3GSJNCS, 4.3GSPWTR, 4.3GSJWTR, 4.3GXi-A, 8.2GLPMDA, 8.2GLPMDM, 7.4GLIHUB, 7.4GLINCC

## Details

- **Price:** 37.54 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 37.54 AUD | In stock |

## Images

- 3856129 Bolt | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3856129-bolt-genuine-volvo-penta)
> Updated: 2026-10-08