# 3853477 Piston | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta piston in the 0.020 inch (0.51 mm) oversize, from the Engine group, weighing 0.796 kg and listed for 29 applications. The oversize is the whole point of the row - this piston only suits a block already bored 0.020 inch over standard.

## 🚤 Compatibility

Full model list at the end of this description.

## ⚙️ Key Features

-   0.020 inch (0.51 mm) oversize
-   0.796 kg
-   Engine group
-   29 applications
-   0.51mm (Volvo assembly listing)
-   Quantity varies by assembly, most commonly one

## 🔌 Function

Takes the combustion pressure and transfers it through the rings and pin to the connecting rod.

## ⚠️ Common Signs of Failure

-   Blue smoke on start-up or under load
-   Oil consumption rising with no external leak
-   Piston slap heard as a cold knock that quietens when warm
-   Skirt scuffed, or the crown pitted or holed
-   Ring grooves worn or the ring lands broken

## 🛠️ Service Notes

-   Only fit this piston to a bore already machined to 0.020 inch over standard - measure the bore before ordering
-   Pistons are supplied to a size and weight set; keep the set matched and check ring gap in the actual bore
-   Renew the crankshaft seal 3853528 and main bearings 3853541 and 3853542 while the engine is stripped this far

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta 3.0GLM-A, 3.0GLM-B, 3.0GLM-C, 3.0GLMMDA, 3.0GLP-A, 3.0GLP-B, 3.0GLP-C, 3.0GLP-D, 3.0GLP-E, 3.0GLP-J, 3.0GLP-N, 3.0GSM-A, 3.0GSM-B, 3.0GSMBYMCE, 3.0GSM-C, 3.0GSMLKD, 3.0GSMNCS, 3.0GSMWTR, 3.0GSP-A, 3.0GSP-B, 3.0GSPBYMCE, 3.0GSP-C, 3.0GSPEFS, 3.0GSPLKD, 3.0GSPMDA, 3.0GSPNCS, 3.0GSPWTR, 3.0GXiC-J, 3.0GXi-J

## Details

- **Price:** 478.42 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 478.42 AUD | In stock |

## Images

- 3853477 Piston | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3853477-piston-genuine-volvo-penta)
> Updated: 2026-10-12