Description
Yanmar KM35A Angle Gear R 2.33 Marine Gearbox – Product Overview
The Yanmar KM35A Angle Gear R 2.33 for 3JH5 is a specialized marine transmission component designed for Yanmar diesel propulsion systems where an angle gearbox configuration is required.
A marine angle gearbox serves as the mechanical interface between the engine and propeller shaft in installations where a right-angle drivetrain layout is required. This Yanmar KM35A angle gear helps transmit engine output while maintaining the correct reduction ratio, shaft alignment, and drivetrain geometry needed for compatible inboard diesel propulsion systems.
Configured with a 2.33 reduction ratio, this unit is suitable for approved Yanmar 3JH5-series marine engine applications where this exact gearbox specification is required.
For customers searching for a Yanmar KM35A marine gearbox, Yanmar 3JH5 gearbox replacement, Yanmar KM35AS transmission, or an OEM Yanmar marine propulsion component, this unit provides a purpose-built solution for compatible marine installations.
Designed for Yanmar 3JH5-Series Engines
The Yanmar KM35A Angle Gear R 2.33 is specifically compatible with Yanmar 3JH5-series diesel engines requiring the correct KM35A angle gear configuration.
Yanmar 3JH5 installations require drivetrain components that match the engine, shafting system, propeller arrangement, controls, and vessel layout accurately. This angle gearbox is intended for standard marine propulsion layouts where the engine, gearbox, mounts, controls, shafting system, and propeller must integrate according to manufacturer specifications.
Typical applications include:
- Sailboats
- Auxiliary marine vessels
- Yanmar 3JH5 repower projects
- OEM marine gearbox replacement
- Compatible inboard diesel installations
- New marine propulsion setups requiring KM35A gear fitment
Before purchase or installation, buyers should confirm the exact engine model, gearbox specification, reduction ratio, gear configuration, mounting arrangement, control setup, and shafting layout.
2.33 Reduction Ratio Configuration
The Yanmar KM35A Angle Gear R is configured with a 2.33 reduction ratio, which helps adapt engine output speed to the propeller shaft requirements of the vessel.
A correctly matched reduction gearbox supports:
- Efficient propeller shaft speed
- Suitable torque transmission
- Proper propeller drive integration
- Reliable inboard diesel propulsion operation
- Correct drivetrain geometry
- Compatibility with approved Yanmar propulsion layouts
This gearbox should be selected only when the vessel and engine configuration require the KM35A Angle Gear R 2.33 specification.
OEM Yanmar Marine Propulsion Component
The Yanmar KM35A Angle Gear R 2.33 for 3JH5 forms part of an OEM Yanmar marine propulsion assembly.
Using the correct OEM-style gearbox helps maintain proper integration between the Yanmar 3JH5 diesel engine, transmission system, controls, engine mounts, shafting system, and propeller.
This component is suitable for:
- Replacement of existing compatible gear units
- Yanmar 3JH5 repower projects
- Inboard diesel drivetrain service
- New marine installations requiring KM35A angle 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 Marine Vessels
The Yanmar KM35A Angle Gear R 2.33 marine gearbox is suitable for compatible sailboats and auxiliary marine vessels using Yanmar 3JH5 inboard diesel propulsion systems.
Angle gearbox configurations are often used where the engine and propeller shaft layout require a specific drivetrain arrangement. This gearbox supports applications where a Yanmar 3JH5-series engine requires a compatible KM35A angle marine transmission with a 2.33 reduction ratio.
For buyers searching for a marine gearbox for sailboats, Yanmar angle gearbox, or Yanmar marine gearbox replacement, this unit provides a direct fitment-focused solution for compatible Yanmar applications.
Replacement and Repower Applications
The Yanmar KM35A Angle Gear R 2.33 for 3JH5 is commonly used for replacing existing gear units, 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, gear configuration, mounting geometry, controls, and shaft arrangement must all be confirmed before installation.
Buyers should verify:
- Yanmar 3JH5-series engine compatibility
- KM35A angle gear requirement
- 2.33 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 KM35A Angle Gear R 2.33 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 KM35A Angle Gear R 2.33 for 3JH5 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 KM35A Angle Gear R 2.33 for 3JH5 |
| Part Reference | KM35AS |
| Manufacturer | Yanmar |
| Product Type | Marine angle gearbox / inboard reduction transmission |
| Gear Series | KM35A |
| Gear Configuration | Angle Gear R |
| Engine Compatibility | Yanmar 3JH5-Series Diesel Engines |
| Reduction Ratio | 2.33 |
| Application | Inboard marine diesel propulsion |
| Suitable Vessels | Sailboats, auxiliary marine vessels, 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 KM35A Angle Gear R 2.33 for 3JH5 is an OEM Yanmar marine gearbox replacement designed for compatible 3JH5-series diesel propulsion systems.
Key details include:
- KM35AS part reference
- KM35A gear series
- Angle Gear R configuration
- 2.33 reduction ratio
- Compatibility with Yanmar 3JH5-series diesel engines
- Inboard diesel marine propulsion use
- Suitable for sailboats and auxiliary marine vessels
- 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 KM35A angle gear configuration.
Frequently Asked Questions
What is the Yanmar KM35A Angle Gear R 2.33 used for?
The Yanmar KM35A Angle Gear R 2.33 is a marine transmission component used to transmit engine output from compatible Yanmar 3JH5-series diesel engines to the propeller shaft in inboard marine propulsion systems.
Which engines is this gearbox compatible with?
This gearbox is specifically compatible with Yanmar 3JH5-series diesel engines requiring the KM35A angle gear configuration.
What is the reduction ratio?
This unit has a 2.33 reduction ratio.
What does angle gear mean?
An angle gear is a gearbox configuration used where the drivetrain layout requires power transfer through an angled arrangement between the engine and propeller shaft.
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 3JH5 inboard diesel propulsion systems requiring this gearbox specification.
Can this gearbox be used for repower projects?
Yes, it can be used in compatible repower projects involving Yanmar 3JH5-series engines where the KM35A Angle Gear R 2.33 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.

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