Description

MerCruiser 350 5.7L ALPHA 300HP (8M0079530) – High-Performance V8 Marine Engine for Reliable Repower

The MerCruiser 350 5.7L ALPHA 300HP (8M0079530) is a premium, high-output inboard marine engine engineered for superior acceleration, smooth cruising, and long-lasting durability. Designed as a partially dressed engine assembly, this 300 HP V8 is an ideal repower solution for aging MerCruiser inboard engines and Alpha sterndrive applications, delivering consistent and fuel-efficient marine performance in demanding conditions.

Powerful V8 Performance & Acceleration

With a robust 300 HP at 5000 RPM and a 5.7L (350 CID) displacement, this engine provides exceptional torque, faster throttle response, and reliable high-speed performance. The integrated roller camshaft and stainless steel valves ensure smoother operation, enhanced efficiency, and extended service life under continuous marine load.

Marine-Grade Durability & Engineering

Built with a 4-bolt main iron block and a nodular iron crankshaft, this engine is designed for strength and endurance in harsh marine environments. Hypereutectic pistons with a 9.4:1 compression ratio improve combustion efficiency and wear resistance, while iron cylinder heads with screw-in rocker studs support long-term structural reliability.

Optimized Fuel & Ignition System

The engine features a 750 CFM 4-barrel carburetor for consistent fuel delivery and stable power output. Combined with the advanced Thunderbolt V ignition system with knock control, it ensures precise ignition timing, improved fuel economy, and dependable starting performance in all boating conditions.

Advanced Cooling & Operational Stability

Equipped with a circulating water pump and bronze water crossover, the cooling system is engineered to maintain optimal operating temperatures and extend engine lifespan. The inclusion of a flame arrestor and harmonic balancer further enhances safety, reduces vibration, and supports smoother engine operation.

Versatile Compatibility & Repower Convenience

The MerCruiser 350 5.7L ALPHA 300HP (8M0079530) is a versatile repower option compatible with:

• MerCruiser Alpha sterndrive applications

• V8 inboard marine engine setups

• Multiple sterndrive and inboard configurations (excluding Alpha One Gen I)

This makes it a cost-effective and high-performance upgrade for recreational and performance boats seeking reliable marine power.

Technical Specifications

Why Choose the MerCruiser 350 5.7L ALPHA 300HP?

• High-output 300 HP V8 performance for superior acceleration

• Fuel-efficient and reliable marine engineering

• Ideal repower solution for MerCruiser Alpha sterndrive boats

• Marine-grade components designed for corrosion resistance

• Durable construction for long-term performance in freshwater and saltwater environments

Warranty & Support

This engine is backed by a 3-Year Limited Factory Warranty, providing long-term reliability and peace of mind. Professional installation is recommended to ensure proper alignment, cooling integration, and optimal performance.

Order with Confidence

Upgrade your vessel with a powerful, efficient, and dependable V8 marine engine built for performance and longevity. The MerCruiser 350 5.7L ALPHA 300HP (8M0079530) delivers the perfect balance of power, durability, and fuel efficiency for a premium boating experience.