MerCruiser 383 MAG STROKER 350 HP (865108R80)

Built for Performance. Proven by Experience.

At Seawave Marine, we specialize in supplying genuine MerCruiser 383 MAG Stroker 350 HP (865108R80) engines — trusted by professional boat builders, mechanics, and marine engineers worldwide. With over a decade of hands-on experience in marine propulsion systems, our team ensures every customer gets not only a powerful engine but the right guidance, installation, and aftercare support.

This Mercury-engineered V8 combines raw power with modern fuel efficiency. Designed for Bravo sterndrives, it’s a preferred upgrade for 5.7L and 7.4L applications — delivering smoother acceleration, higher torque, and long-term dependability on the water.

Expert Engineering. Trusted Performance.

The 383 MAG Stroker is built using premium materials and tested to meet Mercury Marine’s global standards. Its 4340 forged steel crankshaft, billet camshaft, and Cool Fuel II multi-port injection system ensure top-tier reliability even under heavy marine load conditions.
Unlike standard 350 MAG models, the 383 Stroker is performance-tuned for greater displacement and torque response — ideal for sport boats, cruisers, and performance fishing vessels.

Seawave Marine’s engineers have installed and maintained hundreds of these engines, giving us firsthand knowledge of their performance, common owner questions, and best maintenance practices.

Technical Specifications

Why Professionals Choose Seawave Marine

As an authorized Mercury Marine engine supplier, Seawave Marine provides:

• Certified installation and testing by marine engine specialists

• OEM parts and accessories from trusted sources

• Direct technical support for troubleshooting and tuning

• Transparent pricing and full warranty assistance

Our engineers have over 15 years of practical marine engine experience, ensuring every MerCruiser we sell performs exactly as expected on the water.

Warranty Information

The MerCruiser 383 MAG Stroker 350 HP (865108R80) includes a 3-year factory warranty covering defects in materials and workmanship.
Extended protection and service plans are available exclusively from Seawave Marine.

Warranty Coverage Includes:

• 3 years factory parts & labor

• Optional extended protection up to 5 years

• Full access to genuine Mercury service manuals and maintenance guidance

Frequently Asked Questions

1. How powerful is the MerCruiser 383 MAG Stroker?
It produces 350 HP at 5200 RPM and exceptional torque, outperforming older 350 MAG and 6.2L models.

2. What are common MerCruiser 383 Stroker problems?
With proper maintenance, this engine is highly reliable. Issues like over-revving or poor fuel quality can cause minor performance drops — both easily avoidable with regular service.

3. What is the MerCruiser 383 Stroker fuel consumption?
It offers efficient fuel burn for its class, typically 12–15 gallons per hour at cruising speed.

4. How does the 383 compare to the 350 MAG MPI?
The 383 offers greater displacement, stronger low-end torque, and a noticeable improvement in acceleration.

5. Can Seawave Marine install or service my 383 MAG Stroker?
Yes. Our certified technicians provide full installation, testing, and maintenance services across Europe.