MerCruiser 350 5.7L ALPHA 300PS (8M0079530)

Description

MerCruiser 350 5.7L ALPHA 300HP (8M0079530) –  Powerful, Reliable, and Versatile Inboard Engine for Maximum Performance

The MerCruiser 350 5.7L ALPHA 300PS (8M0079530) is a high-performance V8 marine engine engineered to deliver superior acceleration, smooth cruising, and exceptional durability. Designed as a partially dressed marine engine assembly, this 300 HP powerhouse is an ideal replacement for aging inboard MerCruiser engines and MerCruiser Alpha sterndrive applications.

Featuring Thunderbolt V ignition with knock control, a 750 cfm 4-barrel carburetor, a nodular iron crankshaft, and a mechanical fuel pump, this engine is designed for optimal fuel efficiency, durability, and reliable marine performance.

Key Features & Benefits

Unmatched Power & Acceleration

• 300 HP @ 5000 RPM – Delivers high torque and fast acceleration for superior marine performance.
• 5.7L / 350 Cubic Inch Displacement – A powerful upgrade over traditional inboard motors, ensuring enhanced throttle response and efficiency.
• Roller Camshaft & Stainless Steel Valves – Provides smoother engine operation and extended durability.

Marine-Grade Durability & Engineering

• 4-Bolt Main Iron Block & Nodular Iron Crankshaft – Built for extreme strength and durability, ideal for high-performance marine applications.
• Hypereutectic Pistons (9.4:1 Compression Ratio) – Ensures better fuel efficiency and resistance to wear.
• Iron Cylinder Heads with Screw-In Rocker Studs – Optimized for long-lasting durability and performance.

Optimized Fuel Delivery & Ignition

• 750 CFM 4-Barrel Carburetor – Enhances fuel delivery for consistent power output.
• Thunderbolt V Ignition with Knock Control – Provides precise ignition timing for improved combustion efficiency.
• Mechanical Fuel Pump – Ensures steady and reliable fuel supply in all boating conditions.

Cooling & Exhaust System

• Circulating Water Pump & Bronze Water Crossover – Ensures effective cooling for enhanced engine lifespan.
• Flame Arrestor & Harmonic Balancer Included – Provides improved safety and smoother engine operation.

Versatile Compatibility & Easy Installation

• Universal Power Upgrade for V8 MerCruiser Alpha Sterndrive & Inboard Applications.
• Adaptable to Other Brands of Sterndrives & Inboards, Regardless of Make.

Technical Specifications

Specification	Details
Power Output	300 HP @ 5000 RPM
Displacement	5.7L / 350 cubic inches
Engine Type	V8 Marine Engine
Fuel System	750 CFM 4-Barrel Carburetor
Compression Ratio	9.4:1
Crankshaft Material	Nodular Iron
Camshaft Type	Roller Camshaft
Cylinder Heads	Iron with Screw-In Rocker Studs
Ignition System	Thunderbolt V with Knock Control
Fuel Pump	Mechanical
Cooling System	Circulating Water Pump with Bronze Water Crossover
Starter & Harness	10-Pin Harness Included
Recommended Fuel	87 Octane
Engine Weight	Standard V8 Configuration

Why Choose the MerCruiser 350 5.7L ALPHA 300HP?

• Powerful V8 Performance – Ideal for boaters looking for a reliable and high-output marine engine.
• Fuel-Efficient & Reliable – Designed for optimal fuel economy and long-lasting durability.
• Versatile Repower Option – Compatible with MerCruiser Alpha sterndrive and inboard applications.
• Built for Marine Environments – Featuring marine-grade components for corrosion resistance.
• Cost-Effective Upgrade – Provides a universal power solution for multiple sterndrive and inboard motor setups.

Warranty & Support

The MerCruiser 350 5.7L ALPHA 300HP (8M0079530) comes with a 3-Year Limited Factory Warranty, ensuring long-term reliability and support for buyers.

Frequently Asked Questions (FAQs)

What boats are compatible with this engine?
This engine is an excellent repower option for boats using MerCruiser Alpha sterndrives and inboard motors, as well as adaptable to other sterndrive brands.

Is this engine suitable for saltwater use?
Yes, the engine is built with marine-grade corrosion-resistant components to ensure durability in both freshwater and saltwater environments.

Can this engine be used with an Alpha One (Gen I) drive?
No, this engine cannot be used with an Alpha One (Gen I) drive, as the V-belt seawater pump kit is no longer available and is required for proper cooling.

What type of fuel does this engine require?
This engine is optimized to run on 87 Octane fuel, ensuring cost-effective and efficient operation.

Does the price include installation?
No, the price is for the engine only. However, Seawave Marine offers expert installation guidance and professional support to ensure a smooth repower process.

Can I install this engine myself?
While some experienced boat owners may choose to install it themselves, professional installation is recommended to ensure proper alignment, cooling, and performance.

Order Your MerCruiser 350 5.7L ALPHA 300HP Today

Upgrade your boat with the most powerful, efficient, and reliable V8 marine engine available. The MerCruiser 350 5.7L ALPHA 300HP is designed to deliver superior acceleration, durability, and fuel efficiency, making it the perfect choice for a performance-driven boating experience.