Kubota V2403 Engine and Parts Buyers Guide

Kubota V2403 Engine

The Kubota V2403 is a versatile 4-cylinder diesel engine designed for a wide range of applications in agriculture, construction, and industrial sectors. This water-cooled, 4-cycle engine is part of Kubota’s 03-M Series, known for its high power density and reliability.

The V2403 engine has a displacement of 2.434 liters (148.5 cubic inches) with a bore and stroke of 87.0 x 102.4 mm (3.43 x 4.031 inches). It is available in various configurations, including turbocharged and naturally aspirated versions, to suit different power requirements and emissions standards.

Performance specifications for the V2403-M-T-E3B model include a rated output of 44.0 kW (59.0 HP) at 2700 rpm and a maximum torque of 165.1 Nm (122.0 lb-ft) at 1800 rpm. The engine complies with EPA/CARB Interim Tier 4 and EU Stage IIIA emissions regulations, making it suitable for use in environmentally sensitive applications.

Key features of the V2403 include Kubota’s original E-TVCS (Three Vortex Combustion System), which has been improved to provide lower particulate matter (PM) levels. The engine also incorporates noise reduction technologies such as a half-float valve cover and MoS2-coated pistons to decrease vibrations and enhance overall quietness.

The V2403 offers flexibility in installation with its compact dimensions and relatively light weight. It measures 646 x 495 x 725 mm (25.4 x 19.5 x 28.5 inches) without the aftertreatment unit and has a dry weight of approximately 201 kg (443 lbs).

This engine is well-suited for various applications, including forklifts, air compressors, aerial work platforms, welders, skid steers, generators, sweepers, pumps, and wood chippers. Its versatility, power output, and compliance with emissions standards make it a popular choice for equipment manufacturers and operators across multiple industries.

The Kubota V2403 engine is a versatile 4-cylinder diesel engine available in several configurations to suit different applications. It is a water-cooled, 4-cycle engine with a displacement of 2.434 liters. The engine has a bore and stroke of 87.0 x 102.4 mm.

There are multiple variants of the V2403 engine:

– V2403: The original first-generation model
– V2403-M: The latest naturally aspirated version
– V2403-M-T: The turbocharged version

The V2403-M-T-E3B model offers a rated output of 44.0 kW (59.0 HP) at 2700 rpm and maximum torque of 165.1 Nm at 1800 rpm. This variant complies with EPA/CARB Interim Tier 4 and EU Stage IIIA emissions regulations.

Key features of the V2403 engine include:

– Kubota’s E-TVCS (Three Vortex Combustion System) for lower emissions
– Compact dimensions: 646 x 495 x 725 mm (without aftertreatment unit)
– Dry weight of approximately 201 kg
– Electric starting system
– Options for SAE #4 housing/flywheel or standard Kubota flywheel/housing

The engine is designed for durability and performance, with features like optimized cooling water passages and single-side serviceability. It also incorporates noise reduction technologies such as a half-float valve cover and MoS2-coated pistons.

The V2403 is commonly used in various applications, including:

– Agricultural equipment (tractors, harvesters)
– Construction machinery (mini-excavators, skid steers)
– Forklifts
– Industrial equipment (air compressors, welders, generators)
– Pumps
– Wood chippers

When purchasing a V2403 engine, buyers can choose between new and used options. Some sellers offer complete power pack options and various customization choices to suit specific needs. It’s advisable to provide detailed information about the intended application when inquiring about this engine to ensure compatibility and optimal performance.

Kubota V2403-t

The Kubota V2403-T is a turbocharged 4-cylinder diesel engine that is part of Kubota’s 03-M Series. It is a vertical, water-cooled, 4-cycle engine with a displacement of 2.434 liters (148.5 cubic inches). The engine has a bore and stroke of 87.0 x 102.4 mm (3.43 x 4.031 inches).

This engine model complies with EPA/CARB Interim Tier 4 and EU Stage IIIA emissions regulations, making it suitable for various applications that require adherence to these standards. The V2403-T delivers high power density, with a rated output of 44.0 kW (59.0 HP) at 2700 rpm and a maximum torque of 165.1 Nm (122.0 lb-ft) at 1800 rpm.

Key features of the V2403-T include:

1. Turbocharged aspiration for increased power output
2. Indirect injection combustion system
3. In-line fuel pump system
4. Compact dimensions: 646 x 495 x 725 mm (25.4 x 19.5 x 28.5 inches) without the aftertreatment unit
5. Dry weight of approximately 201 kg (443 lbs)

The engine incorporates Kubota’s improved E-TVCS (Three Vortex Combustion System), which helps reduce particulate matter (PM) emissions. It also features noise reduction technologies such as a half-float valve cover and MoS2-coated pistons, which contribute to decreased vibrations and enhanced quietness during operation.

The V2403-T is designed for durability and performance, with optimized cooling water passages between cylinder bores to manage heat load from high power density. This design provides superior endurance and reliable engine performance across various applications.

Common applications for the Kubota V2403-T include:

1. Agricultural equipment
2. Construction machinery
3. Industrial equipment (e.g., air compressors, welders, generators)
4. Forklifts
5. Aerial work platforms
6. Pumps
7. Wood chippers

The engine offers flexibility in installation and operation, with features like a built-in solenoid, low fan position, and single-side serviceability. Additionally, the 03-M Series engines provide side power take-off (PTO) options, allowing for the installation of hydraulic pumps at two side PTO locations to meet the needs of various industrial applications.

Kubota V2403 Oil Filter

The Kubota V2403 engine uses an oil filter that is compatible with several other Kubota engine models. This oil filter is designed to effectively remove contaminants from the engine oil, helping to maintain optimal engine performance and longevity.

Key details about the Kubota V2403 oil filter:

1. Part number: The filter is often referred to as OF3 or may have other manufacturer-specific part numbers.

2. Compatibility: This oil filter is suitable for use with multiple Kubota engine models, including the D1105, D1302, D1305, D1402, D1403, D1503, D1703, D1803, V1702, V1902, V1903, V2003, V2003T, V2203, V2403, F2503, and F2803.

3. Construction: The filter is typically constructed with high-quality materials to ensure efficient oil filtration and durability.

4. Replacement interval: It’s recommended to replace the oil filter according to the manufacturer’s specified maintenance schedule, which is usually every oil change or as indicated in the engine manual.

5. Installation: The filter can be easily installed and removed during routine maintenance. It’s important to ensure proper installation to prevent oil leaks and maintain effective filtration.

6. Function: The oil filter plays a crucial role in removing particles, metal shavings, and other contaminants from the engine oil, helping to protect the engine’s internal components from wear and damage.

7. Genuine parts: For optimal performance and reliability, it’s often recommended to use genuine Kubota oil filters, as they are specifically designed for Kubota engines.

When purchasing or replacing the oil filter for a Kubota V2403 engine, it’s important to verify the exact specifications and part number required for your specific engine model and application. This ensures proper fit and function, maintaining the engine’s performance and longevity.

Kubota V2403 Specs

The Kubota V2403 is a 4-cylinder, vertical, water-cooled diesel engine with a displacement of 2.434 liters (148.5 cubic inches). It has a bore and stroke of 87.0 x 102.4 mm (3.43 x 4.031 inches). The engine is available in both naturally aspirated and turbocharged configurations.

Key specifications for the V2403-M-T-E3B (turbocharged) model include:

– Emission compliance: EPA/CARB Interim Tier 4 and EU Stage IIIA
– Rated output: 44.0 kW (59.0 HP) at 2700 rpm
– Maximum torque: 165.1 Nm (122.0 lb-ft) at 1800 rpm
– Combustion system: Indirect injection
– Fuel system: In-line pump
– Aspiration: Turbocharged
– Dimensions (L x W x H): 646 x 495 x 725 mm (25.4 x 19.5 x 28.5 inches)
– Dry weight: Approximately 201 kg (443 lbs)

The naturally aspirated V2403-M model offers:

– Maximum output (net intermittent): 34.8 kW (46.7 HP) at 2700 rpm
– Maximum output (continuous): 30.2 kW (40.5 HP) at 2700 rpm

Features of the V2403 series include:

– Kubota’s E-TVCS (Three Vortex Combustion System) for reduced emissions
– Electric starting system
– Options for SAE #4 housing/flywheel or standard Kubota flywheel/housing
– Single-side serviceability for easy maintenance
– Reduced noise and vibration levels
– Selectable oil filter position

The engine is designed for various applications, including agricultural equipment, construction machinery, industrial equipment, and more. It offers a balance of power, efficiency, and compliance with emissions regulations, making it suitable for diverse operational needs.

Kubota V2403 Parts

The Kubota V2403 engine has several key components and parts that are essential for its operation and maintenance. Some of the main parts include:

1. Cylinder head: Contains the valves, valve springs, and camshaft.

2. Engine block: The main body of the engine that houses the cylinders and crankshaft.

3. Pistons and connecting rods: Move up and down in the cylinders to convert fuel energy into mechanical energy.

4. Crankshaft: Converts the reciprocating motion of the pistons into rotational motion.

5. Fuel injection system: Includes the fuel pump, injectors, and fuel lines.

6. Oil filter: Removes contaminants from the engine oil.

7. Air filter: Cleans the air entering the engine.

8. Water pump: Circulates coolant through the engine to maintain proper operating temperature.

9. Alternator: Generates electrical power for the engine and recharges the battery.

10. Starter motor: Initiates engine rotation for starting.

11. Turbocharger (for turbocharged models): Increases engine power by forcing more air into the combustion chamber.

12. Exhaust manifold: Collects exhaust gases from the cylinders.

13. Timing belt or chain: Synchronizes the rotation of the crankshaft and camshaft.

14. Valve cover: Protects the valve train components.

15. Oil pan: Stores the engine oil.

16. Thermostat: Regulates coolant flow to maintain optimal engine temperature.

17. Radiator: Cools the engine coolant.

18. Gaskets and seals: Prevent leaks between engine components.

When maintaining or repairing a Kubota V2403 engine, it’s important to use genuine parts or high-quality aftermarket alternatives to ensure proper fit and function. Regular maintenance, including oil changes, filter replacements, and inspections of belts and hoses, can help extend the life of these parts and the overall engine performance.

Kubota V2403 Parts Manual PDF

The Kubota V2403 engine has several parts manuals and workshop manuals available in PDF format, depending on the specific model variant. These manuals typically include:

1. Operation and maintenance manual: Provides instructions for proper engine operation and routine maintenance procedures.

2. Workshop manual: Contains detailed information on engine disassembly, repair, reassembly, and troubleshooting.

3. Spare parts catalog: Lists all engine components with part numbers and exploded view diagrams.

For the V2403 engine, there are different manual versions for various models, including:

– V2403-M-DI-E3: Operation and maintenance manual
– V2403-M-DI-E3B: Workshop manual
– V2403-M-DI-T: Workshop manual
– V2403-M-DI-T-E3B: Workshop manual
– V2403-M-E: Operation and maintenance manual
– V2403-M-E2: Operation and maintenance manual, workshop manual, and spare parts catalog
– V2403-M-E2B: Workshop manual and spare parts catalog
– V2403-M-E3: Operation and maintenance manual and workshop manual
– V2403-M-E3B: Workshop manual and spare parts catalog
– V2403-M-E3BG: Workshop manual
– V2403-M-EA: Workshop manual and spare parts catalog
– V2403-M-ETLB: Operation and maintenance manual, workshop manual, and spare parts catalog
– V2403-M-T: Workshop manual and spare parts catalog
– V2403-M-T-E2: Operation and maintenance manual, workshop manual, and spare parts catalog
– V2403-M-T-E3: Operation and maintenance manual, workshop manual, and spare parts catalog
– V2403-M-T-E3B: Workshop manual and spare parts catalog
– V2403-TE4: Spare parts catalog

These manuals contain essential information for engine maintenance, repair, and parts identification. They include detailed specifications, torque values, adjustment procedures, and troubleshooting guides. The parts catalogs provide comprehensive listings of all engine components with corresponding part numbers and assembly diagrams.

When searching for a specific Kubota V2403 parts manual PDF, it’s important to identify the exact engine model and variant to ensure you obtain the correct documentation for your particular engine configuration.

Kubota V2403 Fuel Filter

The Kubota V2403 engine uses several fuel filter options depending on the specific model and application. Here are some key details about fuel filters for the V2403:

1. There are multiple fuel filter elements compatible with the V2403, including spin-on types and cartridge-style filters.

2. One common fuel filter element for the V2403 has a part number that starts with HH16032430.

3. The spin-on fuel filter typically has an M20 x 1.5 thread, with dimensions of approximately 62mm outside sealing ring, 72mm outside diameter, and 72mm height.

4. Some fuel filter elements for the V2403 are part of a kit that may include both primary and secondary filter elements.

5. The fuel filter is designed to remove contaminants and water from the fuel system, protecting the engine’s fuel injection components.

6. Replacement intervals for fuel filters vary based on operating conditions and fuel quality, but they should be changed according to the manufacturer’s recommended maintenance schedule.

7. When replacing the fuel filter, it’s important to use a genuine Kubota part or a high-quality equivalent to ensure proper fit and filtration performance.

8. Some V2403 models may use a fuel filter element that is also compatible with other Kubota engine series, such as the 03, 05, and 07 Series.

9. Prices for V2403 fuel filter elements can range from about $10 to $40, depending on the specific part and supplier.

10. When installing a new fuel filter, it’s crucial to follow proper priming procedures to remove air from the fuel system and ensure smooth engine operation.

Regular replacement of the fuel filter is essential for maintaining the performance and longevity of the Kubota V2403 engine, as it helps prevent fuel system issues and protects critical engine components.

Kubota V2403 Oil Capacity

The Kubota V2403 engine has an oil capacity of approximately 9.5 liters (2.51 U.S. gallons). This capacity includes the oil pan and oil filter.

Key points regarding the oil capacity and oil changes for the Kubota V2403:

1. The exact oil capacity may vary slightly depending on the specific model variant and installation configuration.

2. It’s recommended to use high-quality 15W-40 or 10W-30 engine oil that meets or exceeds API classification CF or higher.

3. Oil should be changed at regular intervals as specified in the engine’s maintenance schedule, typically every 250 hours of operation or annually, whichever comes first.

4. When changing the oil, it’s important to replace the oil filter as well.

5. The engine should be warm but not hot when draining the oil for optimal removal of contaminants.

6. After refilling with fresh oil, run the engine for a few minutes and check for any leaks.

7. Always verify the oil level using the dipstick after an oil change and top up if necessary.

8. Proper oil maintenance is crucial for the longevity and performance of the Kubota V2403 engine.

9. In severe operating conditions or dusty environments, more frequent oil changes may be necessary.

10. Always refer to the specific engine manual for the most accurate information regarding oil capacity and maintenance procedures for your particular V2403 model.

Kubota V2403 Starter

The Kubota V2403 engine typically uses a 12-volt electric starter motor. Here are some key details about the starter for this engine:

The starter motor is generally a 1.4 kW (1.9 hp) unit with 9 teeth on the drive gear. Some key specifications include:

– Mounting flange diameter: 82.5 mm
– Drive distance: 25 mm
– Mounting hole diameter: 11.15 mm
– Mounting hole centers: 105 mm
– Rotation: Counter-clockwise
– Total length: Approximately 188 mm
– Type: Dry clutch

The starter is designed to fit the SAE #4 housing commonly used on the V2403 engine. It’s compatible with several Kubota engine models in addition to the V2403, including the V2203 and some D series engines.

When replacing the starter, it’s important to ensure you get the correct specification for your particular engine configuration. There are some variations in starters used across different V2403 applications.

The starter engages with the engine’s flywheel to crank the engine during starting. Proper maintenance of the starter system, including keeping electrical connections clean and tight, can help ensure reliable starting performance.

If experiencing starting issues, it’s advisable to have the starter, battery, and charging system tested to diagnose any problems. Rebuilding or replacing the starter may be necessary over the life of the engine.

Kubota V2403 Rebuild Kit

Kubota V2403 engine rebuild kits typically include the following components:

1. Piston set (4 pistons)
2. Piston ring set
3. Main bearings
4. Rod bearings
5. Thrust washers
6. Complete gasket set including head gasket
7. Crankshaft seals (front and rear)
8. Valve stem seals
9. Connecting rod bushings

Some more comprehensive kits may also include:

10. Cylinder liners
11. Valve guide set
12. Camshaft bushings
13. Oil pump

Rebuild kits are available in standard and oversized options to accommodate worn engine components. Standard kits are for engines with minimal wear, while oversized kits are for engines with more significant wear that require machining.

Key points about Kubota V2403 rebuild kits:

– They are designed to fit various V2403 engine models, including naturally aspirated and turbocharged versions.
– Kits may differ slightly based on the specific engine variant (e.g., V2403-M, V2403-M-T, V2403-DI).
– It’s important to verify the exact engine model and serial number when ordering a rebuild kit.
– Using genuine Kubota parts or high-quality aftermarket equivalents is recommended for optimal performance and longevity.
– A complete engine rebuild typically requires additional parts not included in the basic kit, such as water pump, oil pump, and timing components.
– Professional installation is often recommended due to the complexity of the rebuild process and the need for specialized tools and knowledge.

When rebuilding a Kubota V2403 engine, it’s crucial to follow proper procedures, torque specifications, and clearances as outlined in the engine’s workshop manual to ensure reliable performance after the rebuild.

Kubota V2403 Service Manual

The Kubota V2403 engine has several service manuals available, depending on the specific model variant. These manuals typically include:

1. Workshop manual: Contains detailed information on engine disassembly, repair, reassembly, and troubleshooting.

2. Operation and maintenance manual: Provides instructions for proper engine operation and routine maintenance procedures.

3. Spare parts catalog: Lists all engine components with part numbers and exploded view diagrams.

For the V2403 engine, there are different manual versions for various models, including:

– V2403-M-DI-E3: Operation and maintenance manual
– V2403-M-DI-E3B: Workshop manual
– V2403-M-DI-T: Workshop manual
– V2403-M-DI-T-E3B: Workshop manual
– V2403-M-E: Operation and maintenance manual
– V2403-M-E2: Operation and maintenance manual, workshop manual, and spare parts catalog
– V2403-M-E2B: Workshop manual and spare parts catalog
– V2403-M-E3: Operation and maintenance manual and workshop manual
– V2403-M-E3B: Workshop manual and spare parts catalog
– V2403-M-E3BG: Workshop manual
– V2403-M-EA: Workshop manual and spare parts catalog
– V2403-M-ETLB: Operation and maintenance manual, workshop manual, and spare parts catalog
– V2403-M-T: Workshop manual and spare parts catalog
– V2403-M-T-E2: Operation and maintenance manual, workshop manual, and spare parts catalog
– V2403-M-T-E3: Operation and maintenance manual, workshop manual, and spare parts catalog
– V2403-M-T-E3B: Workshop manual and spare parts catalog

These manuals contain essential information for engine maintenance, repair, and parts identification. They include detailed specifications, torque values, adjustment procedures, and troubleshooting guides. When searching for a specific Kubota V2403 service manual, it’s important to identify the exact engine model and variant to ensure you obtain the correct documentation for your particular engine configuration.

Kubota V2403 Fuel Pump

The Kubota V2403 engine uses an in-line fuel injection pump. Here are some key details about the fuel pump for this engine:

1. The fuel pump is a mechanical, cam-driven unit that delivers fuel to the injectors.

2. It is typically located on the side of the engine block and driven by the engine’s camshaft.

3. The pump incorporates individual plungers for each cylinder, ensuring precise fuel delivery.

4. It features an integrated governor to control engine speed and fuel delivery based on load conditions.

5. The pump is designed to operate at high pressures to atomize the fuel effectively for combustion.

6. Some models may use a Bosch PFR type pump, which is known for its reliability and performance.

7. The fuel pump timing is critical for proper engine operation and emissions control. Correct timing ensures fuel is delivered at the right moment in the combustion cycle.

8. Regular maintenance of the fuel system, including the pump, is essential for optimal engine performance and longevity.

9. If experiencing fuel-related issues, it’s important to check the entire fuel system, including filters and lines, not just the pump itself.

10. When replacing the fuel pump, it’s crucial to use a compatible unit that matches the engine’s specifications and to ensure proper installation and timing.

11. Some aftermarket high-performance fuel pumps are available for modified engines, but these should be used with caution as they may affect emissions compliance and warranty.

Proper care and maintenance of the fuel pump, along with using clean, high-quality fuel, can help ensure reliable operation of the Kubota V2403 engine.

Kubota V2403 Serial Number

To identify the serial number on a Kubota V2403 engine:

1. Look for a sticker on top of the valve cover. This sticker typically contains the engine model, serial number, engine part number, and a barcode.

2. If the sticker is missing or worn off, the serial number is also stamped directly on the engine block. For V2403 engines (part of the 03 Series), the serial number location on the block may vary.

3. Check common locations where the serial number might be stamped on the block:
– Side of the engine block
– Near the injection pump
– On the mounting flange area

4. The serial number usually consists of a combination of letters and numbers.

5. If you’re still having trouble locating the serial number, consult the engine’s manual or contact an authorized Kubota dealer for assistance.

Remember that having the correct serial number is important for ordering parts or obtaining service, as it helps identify the specific engine model and any variations or changes based on production dates.

Kubota V2403 Head Gasket

The Kubota V2403 engine uses a cylinder head gasket that is designed to provide a reliable seal between the engine block and cylinder head. Here are some key details about the head gasket for this engine:

The head gasket is compatible with both direct injection and indirect injection versions of the V2403 engine. It’s also suitable for the V2203 engine, which shares similar specifications.

The gasket is typically made of a multi-layer steel construction, which provides excellent sealing properties and durability under high temperatures and pressures. This design helps prevent coolant and oil leaks while maintaining proper compression in the cylinders.

When replacing the head gasket, it’s crucial to follow the proper torque specifications and tightening sequence for the cylinder head bolts. This information is usually provided with the gasket or can be found in the engine’s service manual.

The head gasket is often included in top gasket sets or complete engine overhaul kits for the V2403. These kits may also contain other essential components such as:

– Rocker cover gasket
– Inlet and exhaust manifold gaskets
– Thermostat housing gaskets
– Valve stem seals
– Injector copper washers and heat shields

It’s important to inspect the cylinder head and block surfaces for warpage or damage before installing a new head gasket. Any irregularities should be addressed to ensure a proper seal.

When purchasing a replacement head gasket, it’s advisable to use a high-quality part that matches the original specifications to maintain the engine’s performance and reliability.

Kubota V2403 Parts List

The Kubota V2403 engine consists of numerous parts. Here’s a general list of key components:

1. Engine block
2. Cylinder head
3. Pistons (4)
4. Connecting rods
5. Crankshaft
6. Camshaft
7. Valves (intake and exhaust)
8. Valve springs
9. Rocker arms
10. Push rods
11. Fuel injection pump
12. Fuel injectors
13. Fuel lines
14. Oil pump
15. Oil filter
16. Air filter
17. Water pump
18. Thermostat
19. Radiator
20. Fan and fan belt
21. Alternator
22. Starter motor
23. Flywheel
24. Timing gears or belt
25. Gasket set (including head gasket)
26. Main bearings
27. Rod bearings
28. Piston rings
29. Valve cover
30. Oil pan
31. Intake and exhaust manifolds
32. Turbocharger (for turbocharged models)
33. ECU (Engine Control Unit)
34. Various sensors (temperature, pressure, etc.)
35. Wiring harness

This list covers the major components, but the complete parts list for a Kubota V2403 engine would be much more extensive, including numerous small parts, fasteners, and seals. When ordering parts, it’s important to reference the specific engine model and serial number to ensure compatibility.