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Home Marine gearbox NEW Advance D300A Heavy Duty Marine Gearbox – 5.90:1 Reduction Ratio
NEW Advance D300A Heavy Duty Marine Gearbox 5.52:1 Reduction – Premium Marine Transmission
NEW Advance D300A Heavy Duty Marine Gearbox 5.52:1 Reduction – Premium Marine Transmission $16,161.00 Original price was: $16,161.00.$13,000.00Current price is: $13,000.00.
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NEW Advance D300A Heavy Duty Marine Gearbox – 6.56:1 Reduction Ratio
NEW Advance D300A Heavy Duty Marine Gearbox – 6.56:1 Reduction Ratio $16,154.00 Original price was: $16,154.00.$13,100.00Current price is: $13,100.00.
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NEW Advance D300A Heavy Duty Marine Gearbox – 5.90:1 Reduction Ratio

$16,159.00 Original price was: $16,159.00.$13,100.00Current price is: $13,100.00.

The Advance D300A Heavy Duty Marine Gearbox 5.90:1 Reduction is trusted for its outstanding reliability, efficient performance, and robust engineering. It is designed to handle demanding marine environments while delivering consistent power to your propeller, helping improve vessel maneuverability and operational efficiency.

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Category: Marine gearbox
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Description

Upgrade your marine propulsion system with the NEW Advance D300A Heavy Duty Marine Gearbox 5.90:1 Reduction, engineered for exceptional durability, smooth power transmission, and reliable performance in demanding marine applications. Designed for commercial fishing boats, workboats, passenger vessels, and heavy-duty marine engines, the Advance D300A delivers high torque capacity and efficient power transfer to maximize vessel performance.

With its 5.90:1 reduction ratio, the Advance D300A gearbox provides excellent low-speed thrust, improved fuel efficiency, and enhanced engine protection by optimizing propeller speed. Manufactured with high-quality precision gears and a rugged cast housing, this marine transmission is built to withstand harsh saltwater environments and continuous operation.

Whether you’re replacing an existing marine gearbox or upgrading your vessel’s drivetrain, the Advance D300A Heavy Duty Marine Gearbox offers dependable operation, long service life, and low maintenance requirements.

Key Features

  • Brand new Advance D300A Marine Gearbox
  • 5.90:1 reduction ratio for high torque output
  • Heavy-duty construction for commercial and industrial marine applications
  • Precision-engineered gears for smooth, quiet operation
  • Excellent durability under continuous heavy loads
  • Efficient power transmission for improved vessel performance
  • Corrosion-resistant housing for harsh marine environments
  • Easy installation and dependable long-term reliability

Applications

The Advance D300A 5.90:1 Marine Gearbox is suitable for:

  • Commercial fishing boats
  • Tugboats
  • Passenger ferries
  • Cargo vessels
  • Workboats
  • Inland waterway vessels
  • Marine diesel engine installations
  • Heavy-duty propulsion systems

Technical Specifications

  • Product: Advance D300A Marine Gearbox
  • Condition: New
  • Reduction Ratio: 5.90:1
  • Application: Marine propulsion systems
  • Construction: Heavy-duty industrial-grade housing
  • Power Transmission: High-torque reduction gearbox

Why Choose the Advance D300A Marine Gearbox?

The Advance D300A Heavy Duty Marine Gearbox 5.90:1 Reduction is trusted for its outstanding reliability, efficient performance, and robust engineering. It is designed to handle demanding marine environments while delivering consistent power to your propeller, helping improve vessel maneuverability and operational efficiency.

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Shipping & Delivery

Shipping & Delivery Policy

Wave Inboard Motors – waveinboardmotors.com Last updated: November 24, 2025

We ship worldwide from our main warehouse in Fort Lauderdale, Florida, USA and have secondary stocking points in California (West Coast) and Rotterdam (Europe).

 
 
CategoryShipping Method & CarrierEstimated Delivery Time (business days)Cost Calculation
Small Parts & AccessoriesUSPS Priority, FedEx Ground, DHL ExpressUSA: 2-5Cont. USA: 3-7
Engines & Generators (<500 kg)Freight LTL (R+L, Old Dominion, DSV)USA: 5-12EU/UK: 10-21
Large Engines / Gensets (>500 kg)Flatbed, container, or Ro-RoUSA: 7-21International: 14-45
Oversized / Crated ItemsSpecialized heavy-haul or ocean freightVaries by destinationQuote only – contact sales
 

Free Shipping (Continental USA only)

  • Orders over $300 (before tax) ship free via ground service
  • Engines & generators are excluded from free shipping

International Shipping

  • All duties, taxes, VAT, and customs clearance fees are the buyer’s responsibility
  • We provide commercial invoices and certificates of origin
  • EU customers: no VAT charged on B2B orders with valid VAT ID
  • Delivery Duty Paid (DDP) available on request (extra charge)

Processing Time

  • In-stock items: same or next business day
  • Special order / factory-direct items (most engines & generators): 3-21 days
  • You will receive a confirmed ship date when order is placed

Tracking & Updates

Every order receives a tracking number the moment it ships. You’ll get automated emails at:

  • Order confirmed
  • Item shipped (with tracking link)
  • Out for delivery
  • Delivered

Signature Requirement

All orders over $2,500 require an adult signature upon delivery.

Shipping Restrictions

  • We cannot ship to P.O. boxes for items over 70 lbs
  • Hazardous materials (batteries, some oils) may require ground-only shipping

Damaged or Lost Shipments

  • Inspect shipment immediately upon receipt
  • Photograph any damage and notify us within 48 hours
  • We file claims on your behalf and ship replacements at no cost

Contact for Freight Quotes or Expedited Shipping

Email: shipping@waveinboardmotors.com Phone: +1 (555) 123-4567 (Mon-Fri 9am-5pm EST)

We’re boaters too — we pack every order as if it were going on our own boat. Thank you for choosing Wave Inboard Motors!

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The NEW Advance HC400 Marine Gearbox provides the strength and reliability needed for continuous marine operations. Its optimized reduction ratio helps improve propulsion efficiency, reduce drivetrain stress, and deliver consistent performance during demanding working conditions.

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    wave inboard motors for sale

    Wave Inboard Motors
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    • 1963 SC-101, Greer, SC 29651
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