20709580 Valve Cover | Genuine Volvo Penta Part

🔧 Product Description

A genuine valve cover for Volvo Penta TAD1640GE-B, TAD1641GE-B and TAD1642GE-B engines. It encloses the valve train, retains lubricating oil and supports the specified sealing-strip and gasket arrangement.

🚤 Compatibility

• Engine Family: TAD, D, TWD
• Serial Range: SN2016007732-

Full model list at the end of this description.

⚙️ Key Features

• Formed specifically for the TAD1640-1642GE-B D16 cylinder head
• Mounting profile matches the documented sealing strip and gasket
• Protects rocker and valve-train components from dirt and moisture
• Contains oil splash and crankcase vapour within the upper engine
• Must be installed on clean, flat mating surfaces with the correct tightening sequence
• Inspect the breather and filler connections before transferring them

🔌 Function

Encloses and protects the valve train while retaining lubricating oil and controlling upper-engine ventilation.

⚠️ Common Signs of Failure

• Oil leaks around the cover perimeter
• The cover is cracked, warped or corroded
• Mounting points or threaded inserts are damaged
• The sealing strip or gasket will not seat correctly
• Crankcase vapour or oil mist escapes around the cover

🛠️ Service Notes

• Fit a new gasket or seal whenever the cover comes off, and clean both faces down to clean, dry material without scoring them — use a plastic scraper on aluminium and on moulded covers, never an abrasive disc
• Check the cover itself for distortion and for cracks around the bolt holes, and renew the sealing rings, grommets or spacers that sit under the bolts along with it
• Draw the bolts down evenly from the centre outwards to the figure in the workshop manual for your engine; over-tightening distorts the cover and crushes the gasket, which is the usual reason a freshly gasketed cover still leaks
• Make sure the breather, oil filler and any sensor or fitting carried in the cover are clear and correctly sealed before it goes back on
• Degrease the area after fitting so that at the next check a genuine leak can be told from residual oil

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20709580 → Supersedes 20566321

OEM / Related Numbers

• 20566321 earlier number superseded by this part
• 8130100 - Related earlier Volvo valve-cover reference
• 20736230 - Matching sealing strip
• 21575727 - Related valve-cover gasket
• 22859766 - Related flange screw

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D16C-A MG, D16C-A MH, D16C-B MH, D16C-C MH, D16C1-E MG, D16C1-F MG, D16C2-E MG, D16C2-F MG, D16C-D MH, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH
• Volvo Penta TAD1640-42GE-B, TAD1640GE, TAD1640VE-B, TAD1640-42VE-C
• Volvo Penta TAD1641VE-B, TAD1641GE, TAD1641VE
• Volvo Penta TAD1642VE-B, TAD1642GE, TAD1642VE
• Volvo Penta TAD1650VE-B/51VE, TAD1650GE, TAD1650VE
• Volvo Penta TAD1643VE-B, TAD1643VE
• Volvo Penta TAD1651GE
• Volvo Penta TAD1660-62VE
• Volvo Penta TAD1662VE EU5
• Volvo Penta TAD1670-72VE
• Volvo Penta TWD1643GE
• Volvo Penta TWD1644-45GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TWD1663GE
• Volvo Penta TWD1672-1673GE
• Volvo Penta TWD1682-83GE