23375617 Longblock | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta D4-300 longblock weighing 358 kg, listed for three D series engine applications and superseding part number 21921524. It is within 2 kg of longblock 23375615, so weight cannot separate them - the rated output does.

🚤 Compatibility

Typically suits:

• Volvo Penta D4-300A-F
• Volvo Penta D4-300D-F
• Volvo Penta D4-300I-F

• Engine Family: D
• HP Range: 300 HP

⚙️ Key Features

• D4-300 longblock
• 358 kg
• Supersedes 21921524
• Listed for three D series engine applications
• Within 2 kg of longblock 23375615 - the rated output separates them, not the weight

🔌 Function

The assembled core of the engine - block, crankshaft, pistons, head and valve gear built up ready to take the ancillaries from the engine it replaces.

⚠️ Common Signs of Failure

• Blue smoke and heavy breather blow-by under load
• Compression low or uneven between cylinders
• Knock or rumble from the bottom end
• Oil and coolant mixing, or the header tank pressurising
• Bearing material or swarf found in the sump and filter

🛠️ Service Notes

• Order by part number - only the rated output separates this from longblock 23375615
• Clean or renew the oil cooler, pipework and turbocharger before running a new longblock
• A 358 kg unit needs a crane and freight handling

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 23375617 → Supersedes 21921524 → Supersedes 3801491 → Supersedes 3801464 → Supersedes 3801378 → Supersedes 3801354 → Supersedes 3801253 → Supersedes 3801208

OEM / Related Numbers

• 21921524 earlier number superseded by this part
• 3801491 earlier number superseded by this part
• 3801464 earlier number superseded by this part
• 3801378 earlier number superseded by this part
• 3801354 earlier number superseded by this part
• 3801253 earlier number superseded by this part
• 3801208 earlier number superseded by this part

📦 Condition

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