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