# 3861573 O-Ring | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta o-ring from the Marine Propulsion group, weighing 0.018 kg and listed for 18 applications across the DPH, D and DPR series. A second, much lighter o-ring on the same 18 applications is 3861578.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta DPH-D1
-   Volvo Penta D6-330A-F
-   Volvo Penta D6-370A-F
-   Volvo Penta D4-260A-F
-   Volvo Penta D4-300A-F
-   Volvo Penta D6-300A-F
-   Volvo Penta D4-225A-F
-   Volvo Penta D6-300A-G
-   Volvo Penta D6-340A-G
-   Volvo Penta D6-380A-G
-   Volvo Penta DPH-E
-   Volvo Penta D6-400A-G
-   Volvo Penta D6-400A-F
-   Volvo Penta DPR-D
-   Volvo Penta D4-150A-G
-   Volvo Penta D4-230A-G
-   Volvo Penta D4-270A-G
-   Volvo Penta D4-300A-G

-   **Engine Family:** DPH, D, DPR
-   **HP Range:** 150-400 HP

## ⚙️ Key Features

-   0.018 kg
-   18 applications across the DPH, D and DPR series
-   Larger of two o-rings on this set with 3861578
-   Marine Propulsion group

## 🔌 Function

Seals the joint between two mating parts by being squeezed into its groove.

## ⚠️ Common Signs of Failure

-   Water or oil found where it should not be inside the assembly
-   Weep, drip or crusty residue at the joint
-   Ring flattened, nicked or twisted in its groove
-   Rubber hardened, cracked or gone glassy
-   Ring extruded or nipped where it has been pinched on assembly

## 🛠️ Service Notes

-   This is the heavier of the two o-rings on this set at 0.018 kg against the very light 3861578, so order by part number for the position
-   Treat the o-ring as single use and check the groove and mating face for scoring before fitting

## 📦 Condition

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

## Details

- **Price:** 26.4 AUD
- **Vendor:** Volvo Penta
- **Type:** Gaskets & Seals
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 26.40 AUD | In stock |

## Images

- 3861573 O-Ring | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3861573-o-ring-genuine-volvo-penta)
> Updated: 2026-09-19