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Quicksilver Long Block Assemblies
Mercury-Mercruiser NEW 135 HP Alpha 3.0L Longblock Assembly 4 Cylinder STD LH Rotation, serial 0C856599 – 0K999999, 0L010042 & up
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Estimated Ship Date from Ohio: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
8M0187364
Part Type:
Product Line:
Summit Racing Part Number:
QSV-8M0187364
UPC:
678633153631
Crate Engine Family:
MerCruiser
Actual Engine Displacement:
3.0L/181
Assembled:
Yes
Intake Manifold Included:
No
Cylinder Heads Included:
Yes
Carburetor Included:
No
Throttle Body Included:
No
Distributor Included:
No
Oil Pan Included:
Yes
Valve Covers Included:
Yes
Timing Cover Included:
Yes
Water Pump Included:
No
Harmonic Balancer Included:
Yes
Flexplate Included:
No
Flywheel Included:
No
Air Cleaner Included:
No
Spark Plugs Included:
No
Spark Plug Wires Included:
No
Computer Included:
No
Wiring Harness Included:
No
Supercharger Included:
No
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Replaces all makes of 1990 and newer marine and LMX industrial engines not using dedicated MPI heads.
Quicksilver Long Block Assemblies
Quicksilver's long block assemblies are all-new (not rebuilt, remanufactured, or reconditioned) marine engines and feature improved components, technology, and built-in durability designed to withstand years of marine duty--one of the most abusive and demanding environments for any engine.
The foundation of every Quicksilver long block engine is a new iron block cast to Quicksilver's specifications and designed expressly for marine duty. Thicker castings ensure quieter operation and better durability in saltwater when compared to a standard automotive block. They feature Black-X composite valves that contribute to a 42 percent reduction in valve wear compared to traditional stainless steel valves with hardened seats, while smooth-flowing cylinder heads deliver added performance.
Quicksilver Value Series long blocks are cost-effective solutions when replacing an engine with a reliable fuel system and dress components that can be reused, typically when the original engine block has suffered freeze damage. Select the long block needed for your build.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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