3801457 Longblock Engine | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta remanufactured long block for the 8.1L-HO/496 cu in. V8 in GSi, GXi and Gen+ form, with Vortex cylinder heads, roller lifters, roller rocker arms and crank sensor, listed in the reman catalogue as fitting 2001 and newer and marked non-compliant for engines up to 2010 in the serial range A116912 to A158992. Volvo Penta define a Reman long block as a cylinder block assembly with pistons, connecting rods, crankshaft, camshaft, cylinder heads, rocker mechanism, oil pan and valve cover. It weighs 329.5 kg and is listed for 48 applications on DPX drives, and it supersedes part number 3863399, which was catalogued at different times as both a longblock and a shortblock. This unit is supplied on an exchange basis: core deposit 3804457 is charged alongside it and refunded once the old unit is returned, so both numbers appear on the order.

⚙️ Key Features

• 8.1L-HO/496 cu in. V8 GSi, GXi and Gen+, fits 2001 and newer
• Marked non-compliant up to 2010, serial numbers A116912 to A158992
• Contains block, pistons, connecting rods, crankshaft, camshaft, cylinder heads, rocker mechanism, oil pan and valve cover
• 329.5 kg, 48 DPX applications
• Supersedes 3863399, catalogued earlier as a shortblock as well as a longblock

🔌 Function

Supplies the block, crankshaft, pistons, camshaft, cylinder heads and rocker gear as one remanufactured assembly, replacing the core of a worn or damaged engine without a full new unit.

⚠️ Common Signs of Failure

• Low or uneven compression between cylinders
• Heavy blow-by from the crankcase breather
• Knock or rumble from the bottom end
• Low oil pressure when hot
• Coolant in the oil or exhaust gas in the coolant

🛠️ Service Notes

• Because the superseded number was once listed as a shortblock, check whether the cylinder heads and rocker gear are part of what you were quoted
• 3801458 is the low-output 8.1L-LO/496 package, and long block 3801541 is within 500 grams of this one but is the 5.0L, so order by displacement and rating
• Renew the ancillaries implicated in the original failure before running the replacement up, and return the core once it is running again

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3801457 → Supersedes 3863399 → Supersedes 3862897 → Supersedes 3862061 → Supersedes 3860866

OEM / Related Numbers

• 3863399 earlier number superseded by this part
• 3862897 earlier number superseded by this part
• 3862061 earlier number superseded by this part
• 3860866 earlier number superseded by this part

📦 Condition

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