20581560 Compression Spring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta compression spring, weighing 0.018 kg and listed for 26 applications on D series engines.

🚤 Compatibility

• Engine Family: D

Full model list at the end of this description.

⚙️ Key Features

• 0.018 kg
• Listed for 26 applications on D series engines
• Applies the return or preload force

🔌 Function

Applies the return or preload force in the mechanism it is fitted to.

⚠️ Common Signs of Failure

• Mechanism the spring returns becoming slow, sticky or failing to return
• Spring collapsed, shortened or with a broken coil
• Coils rubbed bright where they have gone coil-bound
• Rattle from the mechanism the spring preloads

🛠️ Service Notes

• Compare the new spring with the one removed for free length and coil condition; a spring that has taken a set or lost length is past its useful life
• Look over the old spring for corrosion pitting, bright rub marks and cracked or broken coil ends, and check whatever it bears against for the same wear
• Never stretch, shorten, grind or heat a spring to alter how it behaves — fit the correct part instead
• Seat the spring squarely in its recess or over its guide with the ends fully home, so it cannot cock over or bind in service
• Where springs work as a group, renew them together so the load stays even across the set

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20581446 - Related Cylinder Block
• 20581617 - Related Cover
• 20581902 - Related Tube
• 20582555 - Related V-Ribbed Belt
• 20582963 - Related D12 EDC Engine Control Unit
• 20582983 - Related Adapter
• 20464433 - Earlier V-ribbed-belt reference
• 20870709 - Related later belt references
• 23531011 - Related later belt references
• 20577134 - Earlier D12 control-unit reference
• 3586269 - Control-unit programming software references
• 3586268 - Control-unit programming software references

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D11C1-A MP, D11C3-A MP, D11C2-A MP, D11C4-A MP, D11B3-A MP, D11B4-A MP, D11A-A, D11A-B, D11A-C, D11A-E, D11B2-A MP, D11A-C MP, D11A-D MP, D11B1-A MP
• Volvo Penta D9A2J, D9A2G, D9A2L MH, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2M MP, D9A2A, D9A2C, D9A2E