Yanmar KM4A2 Gear R 1.47 for JH4-TE / JH4-HTE – KM4A2SS

Description

Yanmar KM4A2 Gear R 1.47 for JH4-TE / JH4-HTE – KM4A2SS For Sale

The Yanmar KM4A2 Gear R 1.47 for JH4-TE / JH4-HTE – KM4A2SS is a genuine Yanmar marine transmission specifically engineered for the renowned Yanmar 4JH-TE and Yanmar 4JH-HTE marine diesel engine series. Featuring a 1.47:1 reduction ratio, this high-performance marine gearbox is designed to deliver efficient power transfer, higher propeller shaft speeds, and dependable long-term reliability for planing vessels, sport cruisers, commercial craft, and recreational boats.

Manufactured to Yanmar’s exact engineering specifications, the KM4A2SS provides seamless integration with compatible turbocharged 4JH engines, ensuring smooth operation, responsive acceleration, and optimized propulsion performance. Its lower reduction ratio makes it particularly suitable for vessels requiring higher shaft RPM and improved cruising speeds while maintaining excellent fuel efficiency.

Whether you are replacing an existing transmission, upgrading your propulsion system, or undertaking a complete vessel repower project, the KM4A2SS offers the durability, reliability, and performance expected from a genuine Yanmar marine transmission.

If you are searching for a Yanmar KM4A2SS for sale, comparing Yanmar KM4A2SS price options, looking for a reliable Yanmar gearbox for sale, or sourcing a genuine Yanmar marine transmission, Yanmar Marine Experts supplies factory-original Yanmar gearboxes backed by technical expertise and worldwide shipping support.

Technical Specifications

Compatible Engines

The Yanmar KM4A2SS is specifically designed for selected turbocharged Yanmar marine diesel engines.

Common applications include:

Compatibility should always be verified before purchase. Our technical team can review your engine model, serial number, and vessel specifications to confirm suitability.

Understanding the 1.47:1 Reduction Ratio

The 1.47:1 reduction ratio is designed for vessels requiring higher propeller shaft speeds and responsive acceleration. Compared to higher reduction ratios, the 1.47:1 configuration allows the propeller shaft to rotate faster relative to engine RPM, making it ideal for lighter vessels and applications where cruising speed is a priority.

Benefits of the 1.47:1 reduction ratio include:

• Higher shaft RPM
• Improved cruising speed
• Responsive acceleration
• Efficient power delivery
• Optimized performance for planing hulls
• Reduced drivetrain losses

Selecting the proper reduction ratio is critical when configuring a complete Yanmar propulsion system to ensure optimum performance and fuel efficiency.

Designed for Yanmar 4JH-TE and 4JH-HTE Engines

The Yanmar 4JH-TE and 4JH-HTE engines have earned a reputation among boat owners and marine professionals for their reliability, fuel economy, and dependable performance. The KM4A2SS is engineered specifically to complement these engines and provide seamless integration throughout the drivetrain.

As part of a complete Yanmar propulsion system, the KM4A2SS contributes to:

• Efficient power transmission
• Smooth gear engagement
• Reliable vessel maneuverability
• Reduced drivetrain losses
• Long-term operational durability

For customers researching a Yanmar 4JH-TE for sale, comparing Yanmar 4JH-HTE price options, or planning a repower project, selecting the correct marine transmission is essential to achieving maximum vessel performance.

Reliable KM4A2 Marine Gearbox Design

The KM4A2 Series has become a trusted solution among marine engineers, boatyards, and vessel owners worldwide. Built for continuous marine operation, the gearbox delivers reliable performance under demanding conditions.

Advantages include:

• Smooth forward and reverse shifting
• Reliable power transfer
• Compact installation footprint
• Long service life
• Simplified maintenance requirements
• Proven marine durability

These qualities make the KM4A2SS a respected commercial marine gearbox and a trusted choice for professional and recreational marine applications.

Why Choose a Genuine Yanmar Gearbox?

Choosing a genuine Yanmar gearbox helps ensure compatibility between the engine, transmission, controls, shaft system, and propeller assembly.

Benefits include:

• Factory-engineered compatibility
• Genuine Yanmar manufacturing standards
• Manufacturer warranty support
• Long-term replacement parts availability
• Reliable propulsion performance
• Simplified future servicing

For vessel owners investing in a replacement Yanmar gearbox, marine repower gearbox, or propulsion upgrade, genuine Yanmar components help maintain the integrity of the complete drivetrain.

Common Applications

The Yanmar KM4A2SS is commonly used in:

• Sport cruisers
• Planing vessels
• Commercial workboats
• Recreational powerboats
• Marine repower projects
• Transmission replacement projects

For operators searching for a dependable boat transmission for sale, the KM4A2SS remains a trusted solution within the Yanmar marine transmission lineup.

Support from Yanmar Marine Experts

Yanmar Marine Experts specializes exclusively in Yanmar propulsion equipment, including marine gearboxes, saildrives, diesel engines, and genuine replacement parts.

Our team assists customers with:

• Product selection
• Gearbox compatibility verification
• Repower planning
• Technical guidance
• Worldwide shipping arrangements
• After-sales support

As an experienced marine gearbox dealer, trusted marine transmission supplier, and source for Yanmar gearbox USA products, we help customers identify the correct transmission for their specific vessel requirements.

Availability and Ordering Information

If you are looking to buy Yanmar gearbox equipment or searching for a Yanmar KM4A2SS for sale USA, our team can provide current stock availability, lead times, and delivery options.

The Yanmar KM4A2SS price may vary depending on inventory availability, destination, and shipping requirements. Likewise, overall Yanmar gearbox price levels may vary based on market conditions and supply chain availability.

For customers comparing propulsion options, we can also provide information regarding other Yanmar gearbox for sale models, compatible ratios, and complete drivetrain packages.

What’s Included

When purchasing the Yanmar KM4A2 Gear R 1.47 for JH4-TE / JH4-HTE – KM4A2SS, your package may include:

• Genuine Yanmar KM4A2SS Marine Gearbox
• Factory documentation
• Manufacturer warranty coverage
• Technical assistance from Yanmar Marine Experts
• Compatibility verification support

Package contents may vary depending on factory supply specifications.

Warranty and Technical Support

The KM4A2SS is supplied with applicable manufacturer warranty coverage.

Our team remains available to assist with:

• Engine compatibility verification
• Gearbox selection guidance
• Reduction ratio recommendations
• Product selection support
• Worldwide logistics arrangements

Whether you are sourcing a replacement Yanmar gearbox, installing a marine repower gearbox, or upgrading a complete propulsion package, our specialists can help ensure you receive the correct solution.

Frequently Asked Questions

Is the KM4A2SS a genuine Yanmar gearbox?

Yes. We supply only genuine Yanmar marine transmissions backed by manufacturer warranty support.

Which engines are compatible with the KM4A2SS?

The KM4A2SS is designed primarily for the Yanmar 4JH-TE and Yanmar 4JH-HTE marine diesel engines.

What does the 1.47:1 reduction ratio provide?

The 1.47:1 ratio allows higher propeller shaft speeds, improved cruising performance, responsive acceleration, and efficient power delivery.

Is the KM4A2SS suitable for repower projects?

Yes. The KM4A2SS is frequently selected for marine repower gearbox installations, transmission replacements, and propulsion upgrades.

How do I get the latest Yanmar KM4A2SS price?

Contact our sales team for current pricing, stock availability, lead times, and delivery options.

Request a Quote

Interested in the Yanmar KM4A2 Gear R 1.47 for JH4-TE / JH4-HTE – KM4A2SS for sale?

Contact Yanmar Marine Experts today for the latest Yanmar KM4A2SS price, stock availability, and worldwide shipping options.

For the fastest assistance, please provide:

• Engine model
• Engine serial number
• Current gearbox model
• Vessel make and model
• Delivery destination

Our technical specialists will review your requirements and provide a tailored quotation along with compatibility guidance, availability information, and shipping options.