# 3581291 Rocker Arm | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta rocker arm from the Engine group, weighing 0.048 kg and listed for 15 applications across D and MD series engines. It supersedes part number 861875.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D2-40
-   Volvo Penta D2-40B
-   Volvo Penta D2-40F
-   Volvo Penta D1-30
-   Volvo Penta D1-30B
-   Volvo Penta D1-30F
-   Volvo Penta MD2010B
-   Volvo Penta MD2010-C
-   Volvo Penta MD2010-D
-   Volvo Penta MD2020B
-   Volvo Penta MD2020-C
-   Volvo Penta MD2020-D
-   Volvo Penta MD2030B
-   Volvo Penta MD2030-C
-   Volvo Penta MD2030-D

-   **Engine Family:** D, MD
-   **HP Range:** 30-40 HP

## ⚙️ Key Features

-   0.048 kg
-   Supersedes 861875
-   15 applications across D and MD series engines
-   Quantity varies by assembly, most commonly three

## 🔌 Function

Transfers the pushrod's motion to the valve, opening it against its spring.

## ⚠️ Common Signs of Failure

-   Ticking or tapping from the valve gear
-   Pad or tip worn, pitted or scuffed
-   Bore or shaft worn, giving side play
-   Adjuster thread damaged or seized
-   Valve clearances drifting out of specification

## 🛠️ Service Notes

-   Rocker arm 3581292 is the much lighter companion on the same 15 engines — inlet and exhaust rockers differ, so confirm the position
-   Valve cap 3581293 supersedes both rocker numbers, so check what the job needs

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3581291 → Supersedes 861875

## 📦 Condition

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

## Details

- **Price:** 139.95 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 139.95 AUD | In stock |

## Images

- 3581291 Rocker Arm | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3581291-rocker-arm-genuine-volvo-penta)
> Updated: 2026-10-12