# 3855721 Retainer | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta retainer from the Engine group, weighing 0.050 kg and listed for 68 applications on DPX series drives.

## 🚤 Compatibility

-   **Engine Family:** DPX

Full model list at the end of this description.

## ⚙️ Key Features

-   0.050 kg
-   68 applications
-   DPX series drives
-   Engine group
-   Quantity varies by assembly, most commonly one

## 🔌 Function

Holds the part it fits against its seat so it cannot shift or work its way out in service.

## ⚠️ Common Signs of Failure

-   The part it holds found loose or out of position
-   Retainer sprung, dished or cracked
-   Bright fretting marks on its mating face
-   Fasteners around it found slack

## 🛠️ Service Notes

-   Fitting 3855722 shares the same 68 DPX applications and sits in the same assembly, so check whether both are needed while it is apart
-   Renew rather than reuse a retainer that has been sprung open

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta 8.1Gi-B, 8.1Gi-BF, 8.1Gi-C, 8.1Gi-CF, 8.1Gi-D, 8.1GiI-A, 8.1GiI-B, 8.1GiI-C, 8.1GiI-D, 8.1GSi-A, 8.1GSiI-A, 8.1GXi-A, 8.1GXi-AF, 8.1GXi-B, 8.1GXi-BF, 8.1GXi-C, 8.1GXi-CF, 8.1GXiI-B, 4.3GIJBYA, 4.3GIPBYCCE, 4.3GIPEFS, 4.3GIPLKDCE, 4.3GIPLKECE, 4.3GIPNCSCE, 4.3GIPNCBCE, 4.3GIPWTRCE, 4.3GiJWTR, 4.3GL-A, 4.3GL-B, 4.3GL-C, 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, 4.3GSPWTR, 4.3GSJWTR, 4.3GXi-A, 4.3GXi-B, 4.3GXi-BF, 4.3GXi-C, 4.3GXi-CF, 4.3GXi-D, 4.3GXi-DF, 4.3OSi-BF, 4.3OSi-B, 4.3OSi-C, 4.3OSi-CF, 4.3OSi-D, 4.3OSi-DF
-   Volvo Penta DPX375-A, DPX375-B, DPX375-BF, DPX375-CF
-   Volvo Penta DPX420-CF, DPX420-A, DPX420-B, DPX420-BF

## Details

- **Price:** 332.2 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 332.20 AUD | In stock |

## Images

- 3855721 Retainer | Genuine Volvo Penta Part
- 3855721 Retainer | Genuine Volvo Penta Part - photo 2 of 2

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3855721-retainer-genuine-volvo-penta)
> Updated: 2026-10-07