78490819 Valve Cover | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta valve cover from the Engine group, weighing 7.257 kg and listed for 21 applications in the D series. It supersedes part number 21454061. It is the lighter of a pair with valve cover 78490804 at 10.886 kg, which covers 18 D series applications.

🚤 Compatibility

• Engine Family: D
• HP Range: 145-320 HP

Full model list at the end of this description.

⚙️ Key Features

• 7.257 kg
• 21 D series applications
• Supersedes 21454061
• Lighter of a pair with valve cover 78490804 at 10.886 kg

🔌 Function

Seals the top of the cylinder head over the valve mechanism, retaining oil and excluding dirt.

⚠️ Common Signs of Failure

• Oil seeping from the cover joint onto the head or manifold
• Oil smell or smoke from oil on a hot surface
• Cover cracked or a mounting boss broken
• Joint face warped so a new gasket still weeps
• Fixings loosening as the gasket relaxes

🛠️ Service Notes

• The two valve covers here supersede different earlier numbers and are not interchangeable, so order by part number
• Fit a new gasket and sealing washers and tighten evenly to the specified figure
• Check the breather system, as crankcase pressure is a common cause of a repeat leak at this joint

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 78490819 → Supersedes 21454061 → Supersedes 40005652 → Supersedes 3583872

OEM / Related Numbers

• 21454061 earlier number superseded by this part
• 40005652 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D4-260A-F, D4-260D-F, D4-260I-F, D4-300A-F, D4-300D-F, D4-180I-F, D4-225I-F, D4-300I-F, D4-225A-F, D4-175I-G, D4-230I-G, D4-270I-G, D4-320I-G, D4-300I-G, D4-150A-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G, D4-145I-G, D4-175 VG