3801425 Longblock Engine | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta remanufactured long block for the TAD1250VE, TAD1251VE and TAD1252VE engines, weighing 1132.5 kg across four applications. It is the shared long block for the whole TAD1250VE to TAD1252VE block, where complete engine 3801535 is listed for TAD1251VE alone. Long block 3801505 at 1138 kg serves the neighbouring TAD1340 range, so 5.5 kg separates them and the part number must decide. A reman long block is defined as the cylinder block assembly with pistons, connecting rods, crankshaft, camshaft, cylinder heads, rocker mechanism, oil pan and valve cover - the intake and fuel system, exhaust manifold, turbocharger, oil cooler, circulation pump and flywheel housing belong to the complete engine package rather than to a long block. Reman components are restored to technically new condition, with wear parts and anything outside tolerance replaced by new genuine parts, built to a bill of material carrying all design changes so the unit meets the latest technical specification, then tested and painted before despatch. This is an exchange item: core deposit 3804425 is charged alongside it and refunded as soon as the worn long block is returned, and the core can go back once the new one is fitted and the engine is running again.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1250VE
• Volvo Penta TAD1251VE
• Volvo Penta TAD1252VE
• Volvo Penta TAD1250-52VE

• Engine Family: TAD

⚙️ Key Features

• For TAD1250VE, TAD1251VE and TAD1252VE
• 1132.5 kg
• Long block package: block, pistons, conrods, crankshaft, camshaft, cylinder heads, rocker mechanism, oil pan and valve cover
• No intake or fuel system, exhaust manifold, turbo, oil cooler, circulation pump or flywheel housing
• Within 5.5 kg of long block 3801505 for the TAD1340 range - order by part number

🔌 Function

Supplies the block, crankshaft, pistons, camshaft, cylinder heads and valve gear as one remanufactured assembly, replacing the core of a worn engine while the ancillaries carry over.

⚠️ Common Signs of Failure

• Low or uneven compression across the cylinders
• Heavy blow-by from the crankcase breather
• Knocking or rumbling from the bottom end under load
• Oil pressure falling away when hot
• Scored bores, picked-up bearings or a worn crankshaft found on strip-down

🛠️ Service Notes

• Order strictly by part number: long block 3801505 for the TAD1340 range sits within 5.5 kg of this one
• Transfer or renew the intake and fuel system, exhaust manifold, turbocharger, oil cooler, circulation pump and flywheel housing, none of which are long block content
• Core deposit 3804425 is charged with this order and refunded when the worn long block goes back - the return can wait until the new one is fitted and the engine is running again

📦 Condition

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