2021 Mercury 8.1L Horizon (PLUS-SERIES) Inboard Engine - IN-LINE 370 HP

United States

$ 20,579

PT# 8M0173773 (NEW) 8.1L MPI (370-hp) Horizon In-Line Down Angle Inboard Engine ONLY, Non-DTS:(Transmission not included). Fully dressed Marine Engine. 100%  new Quicksilver. Built by Quicksilver Division. 3-Year Mercury Marine Factory Backed Warranty. Heavy Duty Iron Block with splayed 4-bolt Main Bearing Caps, Priority Main Oiling System, Hypereutectic pistons, Roller Camshaft, 1.7:1 Rocker Arms, Forged Steel Crankshaft, Quicksilver Iron Cylinder Heads featuring Black-X Valve Tech. 

Specifications: HP / kW @ flywheel: 375 / 272 Maximum RPM (WOT): 4200 - 4600 Engine type: Remanufactured 8.1L Mercury V-8 iron block and heads. Displacement (CID/L): 496 / 8.1 Bore and stroke: 4.25 x 4.38" / 108 x 111 mm. Compression ratio: 8.6:1   Fuel requirement: 87 octane (R+M)/2. Engine control system: PCM 555. Fuel delivery system: GEN III cool fuel. Fuel injection system: Sequential multi-point electronic fuel injection (MPI). Air induction: Two-piece long runner intake with 75 mm throttle body. Ignition: Distributorless ignition with knock control. Alternator amps: 65 amp. Water drain system: Single point air actuated. Exhaust system: Iron manifolds with 4" / 102 mm diameter 316 stainless steel dry joint exhaust elbows, +2"Risers Standard. Cooling system: Brass sea water pump Closed cooling. Long life 5-year antifreeze. Accessory drive system: Serpentine belt. Lubrication system: High flow oil pump and copper engine oil cooler. Recommended oil: SAE 25W-40 NMMA Certified FC-W Synthetic Blend. Engine guardian system: Exhaust manifold temperature High coolant temperature Knock control Low oil pressure Low voltage Low water pressure Over-rev Transmission temperature. Transmission coupler: Dual-stage coupler - must be changed for 72C transmissions. 
NOTES:
1) Engine is not equipped with a decorative plastic engine cover An old cover can be transferred from an older engine or simply left off.
2) Because this is a completely new engine and not a major repower assembly, the old engine being replaced is to be returned per EPA, 1068.240.

 Weight: 999 lbs

*Price, if shown, does not include government fees, taxes, additional equipment, installation or any finance charges (if applicable). Final actual sales price will vary depending on options or accessories selected.
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Basic Info

Price: $ 20,579
Make: Mercury
Model: 8.1L Horizon (PLUS-SERIES) Inboard Engine - IN-LINE
Year: 2021
Condition: New
Category: Inboard
Stock Number: 8M0173773

Technical Details

Power: 370 HP
RPM: 4600
Fuel: Gasoline
Number Cylinders: 8
Configuration: V

Contact

Pro Boats
Default User
909-599-0531
info@proboats.com

Office

Pro Boats
553 w. Covina Blvd.
San Dimas CA US 91773
909-599-0531

Descriptions

Fuel Induction System: Sequential multi-point electronic fuel injection (MPI)
Cooling System: Brass sea water pump Closed cooling
Starting System: Electric
Lubrication System: High flow oil pump and copper engine oil cooler

Measurements

Displacement: 496 cid
Bore: 4.25 in
Stroke: 4.38 in
Alternator Output: 65 Volts


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