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Quicksilver 6.3L / V8 Longblock Assembly 8M0187372

$11,000.00

Manufacturer: Mercury/Quicksilver

Stock Level: 3

Product Information

Longblock Assembly
8M0187372
Left‑Hand / Standard Rotation
Replaces 2008 and later 383 MPI Repower engines.
GM 6.3 Liter Gen+ 383 V8
3 Year limited factory warranty. No core or container deposit.
 
Parts that will need to be transferred or purchased separately:
• Balancer
• Flywheel
• Spark Plugs
• Distributor
• Water pump
• Manifold gasket set
• Quicksilver Synthetic Blend 25W‑40 4‑Stroke Oil
 
Black‑X Valve Technology
• 21N Intake valve parent material
• 24N Exhaust valve parent material
• Plasma nitride prevents valve sticking & increases toughness
• Chrome‑Cobalt alloy seats resist corrosion from alcohol fuels
• Valve life improved 42%
 
Hardened valve seat installed in the cylinder heads
• Hardened Intake & Exhaust seat inserts
• Premium alloy seat material
 
Heavy duty head and block castings
• Resist corrosion and cracking
• Higher loading capacity
• Ability to use solid engine mounts
 
Premium components
• 100% brass core plugs
• High volume oil pump
• Marine valve springs resist fatigue
• Super polished crankshafts using superior material and design features
 
100% Advanced SIM Testing
• Water and oil passages pressure tested 100%
• Phased rotational testing with hot oil validates all oil passages, bearings, and assembly
• Advanced compression testing verifies cylinder sealing and valve lash integrity
• Oil flush at completion of test removes break‑in debris
• Shipped without oil to prevent spillage while in transit
 
 
 
Contact us for Delivery, Shipping and Pick-up Options
 

Product Code: 8M0187372

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