Description
Yanmar KM4A2 Gear R 2.14 Marine Gearbox – Product Overview
The Yanmar KM4A2 Gear R 2.14 for JH4-TE / JH4-HTE is a specialized marine transmission component designed for integration with Yanmar diesel propulsion systems requiring a compact reduction gearbox.
A marine gearbox serves as the mechanical interface between the engine and propeller shaft. It transfers engine output while adapting propeller shaft speed and torque delivery according to the required reduction ratio. This Yanmar KM4A2 gearbox is configured with a 2.14 reduction ratio, making it suitable for approved Yanmar JH4-TE and JH4-HTE marine engine applications where this specific drivetrain configuration is required.
For customers searching for a Yanmar KM4A2 marine gearbox, Yanmar JH4-TE gearbox replacement, Yanmar JH4-HTE transmission, or an OEM Yanmar marine propulsion component, this unit provides a purpose-built solution for compatible inboard diesel installations.
Designed for Yanmar JH4-TE and JH4-HTE Engines
The Yanmar KM4A2 Gear R 2.14 is compatible with Yanmar JH4-TE and Yanmar JH4-HTE diesel engines specified for KM4A-series transmission applications.
Yanmar JH4 installations require properly matched drivetrain components to maintain correct engine alignment, reduction ratio, control operation, shafting integration, and propeller drive performance. This gearbox is intended for standard marine propulsion layouts where the engine, gearbox, mounts, controls, shafting system, and propeller must work together according to manufacturer specifications.
Typical applications include:
- Sailboats
- Auxiliary powerboats
- Yanmar JH4 repower projects
- OEM marine gearbox replacement
- Compatible inboard diesel installations
- New marine propulsion setups requiring KM4A gear fitment
Before purchase or installation, buyers should confirm the exact engine model, gearbox specification, reduction ratio, rotation requirement, mounting arrangement, control setup, and shafting layout.
2.14 Reduction Ratio Configuration
The Yanmar KM4A2 Gear R is configured with a 2.14 reduction ratio, which helps adapt engine output speed to the propeller shaft requirements of the vessel.
A correctly matched reduction gearbox supports:
- Controlled propeller shaft speed
- Suitable torque transfer
- Proper propeller drive integration
- Reliable inboard propulsion operation
- Accurate drivetrain alignment
- Compatibility with approved Yanmar drivetrain layouts
This gearbox should be selected only when the vessel and engine configuration require the KM4A2 Gear R 2.14 specification.
OEM Yanmar Marine Propulsion Component
The Yanmar KM4A2 Gear R 2.14 for JH4-TE / JH4-HTE forms part of an OEM Yanmar marine propulsion configuration.
Using the correct OEM-style gearbox helps maintain proper integration between the Yanmar JH4 diesel engine, transmission, controls, engine mounts, shafting system, and propeller.
This component is suitable for:
- Replacement of existing compatible transmissions
- Yanmar JH4 repower projects
- Inboard diesel drivetrain service
- New marine installations requiring KM4A-series gear compatibility
- Marine propulsion system refurbishment
Professional installation is recommended to ensure correct alignment, fitment, control connection, lubrication, and shaft integration.
Suitable for Sailboats and Auxiliary Powerboats
The Yanmar KM4A2 Gear R 2.14 marine gearbox is suitable for compatible sailboats and auxiliary powerboats using Yanmar JH4 inboard diesel propulsion systems.
Sailboats and auxiliary powerboats often require compact, dependable transmission components that match the engine, shafting system, propeller arrangement, and mounting layout accurately. This gearbox supports applications where a Yanmar JH4-TE or Yanmar JH4-HTE engine requires a compatible KM4A2 marine transmission with a 2.14 reduction ratio.
For buyers searching for a marine gearbox for sailboats, Yanmar inboard gearbox, or Yanmar marine gearbox replacement, this unit provides a direct fitment-focused solution for compatible Yanmar applications.
Replacement and Repower Applications
The Yanmar KM4A2 Gear R 2.14 for JH4-TE / JH4-HTE is commonly used for replacing existing transmissions, supporting compatible repower projects, or completing new installations requiring an OEM Yanmar transmission solution.
When replacing a marine gearbox, technical accuracy is essential. Ratio, engine model, rotation, mounting geometry, controls, and shaft arrangement must all be confirmed before installation.
Buyers should verify:
- Yanmar JH4-TE compatibility
- Yanmar JH4-HTE compatibility
- KM4A-series transmission requirement
- 2.14 reduction ratio
- Gear R configuration
- Mounting and alignment requirements
- Control and shafting compatibility
- Vessel installation details
Correct specification matching helps support reliable torque transfer and proper propeller shaft integration.
Installation and Compatibility Considerations
The Yanmar KM4A2 Gear R 2.14 marine transmission should be installed according to manufacturer specifications and matched carefully with the vessel’s existing propulsion system.
Important considerations include engine model, reduction ratio, gear configuration, mounting geometry, engine mounts, shaft alignment, propeller selection, control connection, lubrication requirements, and service access.
Marine drivetrain components should be installed by qualified technicians familiar with Yanmar propulsion systems. Proper installation helps support dependable operation and avoids compatibility issues caused by incorrect ratio, alignment, or control setup.
Worldwide Marine Equipment Supply
The Yanmar KM4A2 Gear R 2.14 for JH4-TE / JH4-HTE is suitable for customers requiring professional marine transmission and propulsion component supply.
With experience shipping marine engines, transmissions, and spare parts worldwide, this component can support vessel owners, shipyards, marine technicians, and repower specialists requiring dependable Yanmar drivetrain solutions.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Yanmar KM4A2 Gear R 2.14 for JH4-TE / JH4-HTE |
| Part Reference | KM4A2S |
| Manufacturer | Yanmar |
| Product Type | Marine gearbox / compact inboard reduction transmission |
| Gear Series | KM4A2 |
| Gear Configuration | Gear R |
| Engine Compatibility | Yanmar JH4-TE / Yanmar JH4-HTE |
| Reduction Ratio | 2.14 |
| Application | Inboard marine diesel propulsion |
| Suitable Vessels | Sailboats, auxiliary powerboats, compatible marine vessels |
| Typical Use | Gearbox replacement, repower work, new compatible installations |
| Main Function | Engine output transfer to propeller shaft |
| Component Type | OEM Yanmar marine propulsion transmission component |
Key Product Details
The Yanmar KM4A2 Gear R 2.14 for JH4-TE / JH4-HTE is an OEM Yanmar marine gearbox replacement designed for compatible JH4-series diesel propulsion systems.
Key details include:
- KM4A2S part reference
- KM4A2 gear series
- Gear R configuration
- 2.14 reduction ratio
- Compatibility with Yanmar JH4-TE
- Compatibility with Yanmar JH4-HTE
- Compact inboard diesel marine propulsion use
- Suitable for sailboats and auxiliary powerboats
- Applicable for replacement, repower, and new installations
- Designed as an OEM Yanmar marine propulsion component
This gearbox should be selected only when the vessel requires this exact Yanmar KM4A2 configuration.
Frequently Asked Questions
What is the Yanmar KM4A2 Gear R 2.14 used for?
The Yanmar KM4A2 Gear R 2.14 is a marine transmission component used to transfer engine output from compatible Yanmar JH4-series diesel engines to the propeller shaft in inboard marine propulsion systems.
Which engines is this gearbox compatible with?
This gearbox is compatible with Yanmar JH4-TE and Yanmar JH4-HTE diesel engines specified for KM4A-series transmission applications.
What is the reduction ratio?
This unit has a 2.14 reduction ratio.
Is this an OEM Yanmar marine gearbox component?
Yes. It is described as an OEM Yanmar marine propulsion transmission component for compatible applications.
Can this gearbox be used for sailboats?
Yes, it can be suitable for compatible sailboats using Yanmar JH4 inboard diesel propulsion systems requiring this gearbox specification.
Can this gearbox be used for auxiliary powerboats?
Yes, it can be suitable for compatible auxiliary powerboats with approved Yanmar JH4 marine diesel installations.
Can this gearbox be used for repower projects?
Yes, it can be used in compatible repower projects involving Yanmar JH4-TE or Yanmar JH4-HTE engines where the KM4A2 Gear R 2.14 configuration is required.
Should compatibility be verified before purchase?
Yes. Buyers should verify the engine model, gear series, reduction ratio, mounting requirements, controls, shafting layout, and vessel installation details before purchase.
Reviews
There are no reviews yet.