KUBOTA D1503, D1703 Engine Head with Valves 16467-03040 (NEW)
Product Overview
Presenting a brand new, high-quality engine cylinder head specifically designed for KUBOTA D1503 and D1703 diesel engines. This essential component, part number 16467-03040, comes complete with pre-installed valves, ensuring a ready-to-fit solution for restoring your engine's performance and reliability. Manufactured to meet or exceed OEM specifications, this cylinder head is built for durability and optimal engine function.

Product Specifications
Part Number: 16467-03040 (Also interchangeable with 16467-03047, 16467-03048, 16467-03049, 16467-03050)
Engine Models: KUBOTA D1503, KUBOTA D1703
Condition: New
Type: Complete Cylinder Head with Valves
Material: High-grade cast iron or aluminum alloy (typical for engine heads, confirm with supplier if critical)
Configuration: Designed for 3-cylinder engines
Valves: Includes intake and exhaust valves installed
Valve Seats & Guides: Pre-installed and machined
Origin: High-quality aftermarket part
*Note: Specific dimensions and detailed valve specifications (stem diameter, guide ID, etc.) can be provided upon request or may be found in the respective engine service manuals.
Key Advantages & Selling Points
Direct Replacement: Engineered for a perfect fit and seamless integration with KUBOTA D1503 and D1703 engines.
Complete Assembly: Comes with valves pre-installed, saving time and effort during installation.
High Quality Material: Constructed from durable materials to withstand high temperatures and pressures, ensuring long service life.
Restored Performance: A new cylinder head helps restore proper compression, combustion, and overall engine efficiency.
Cost-Effective Solution: Offers a reliable alternative to expensive OEM parts or costly repairs on a damaged head.
Includes Valves: Eliminates the need to source and install valves separately.
Applicable Equipment
This cylinder head (P/N 16467-03040) is designed for various equipment powered by KUBOTA D1503 and D1703 diesel engines. Common applications include:
Kubota Tractors: Such as L2900, L3000, L3010, L3130, GL series (GL26, GL27, GL29, GL32, etc.)
Kubota Excavators: Including KX91-3, U30, U35 series
Kubota Loaders: Like R420, R420S, R420 Alpha series
Generators: Various industrial and portable generator sets
Other Compact Construction & Industrial Machinery: Including rollers (e.g., Hamm HD series), power tillers, pumps, and other equipment utilizing these reliable Kubota engines.
Application Scenarios & Case Analysis
The KUBOTA D1503 and D1703 engines are workhorses in various demanding environments. Replacing the cylinder head is typically necessary when the original head is damaged due to overheating, cracking, warping, or severe valve seat wear.
Agricultural Use (Tractors): A Kubota L-series tractor used for plowing and tilling in a hot summer can experience overheating if the cooling system fails, potentially warping the cylinder head. Replacing the damaged head with a new unit ensures the engine can regain proper compression and cooling efficiency to handle strenuous field work.
Construction Sites (Excavators/Loaders): Compact excavators like the KX91-3 or loaders like the R420 are used in excavation and material handling daily. A head gasket failure due to age or stress can lead to coolant/oil mixing and loss of power. Installing a new cylinder head resolves these issues, getting the equipment back to work reliably on site, minimizing downtime.
Power Generation: A generator set powered by a D1703 engine used for backup power at a critical facility requires consistent performance. Valve issues or a damaged head can lead to misfires or power loss. Replacing the head ensures the generator runs smoothly and reliably when needed most.
In each scenario, a healthy cylinder head is crucial for maintaining engine performance, fuel efficiency, and preventing further damage.
Related & Similar Products
Customers needing a new cylinder head might also require or be interested in other related engine components:
Head Gasket Set: Essential for a proper seal between the cylinder head and engine block. Available for D1503/D1703 engines.
Cylinder Head Bolts: Often recommended to be replaced when installing a new head to ensure proper clamping force.
Valve Cover Gasket: Seals the top of the cylinder head.
Intake & Exhaust Valves (Individual): If only individual valves or related components (springs, retainers, seals) are needed, they are available separately.
Pistons & Piston Rings: Often inspected or replaced during a major engine head repair, applicable to D1503/D1703 engines.
Cylinder Liners/Bushings: May need attention if there is bore damage.
Similar cylinder heads for other Kubota 03 series engines like the D1403, D1803, V2203, V2403 may also be available, applicable to corresponding tractors, excavators, loaders, and other machinery.
Installation & Maintenance Common Issues and Solutions
Proper installation and maintenance are crucial for the longevity of a new cylinder head.
Common Issues During Installation:
Incorrect Torque Sequence/Specs: Leading to warping or improper sealing.
Dirty or Damaged Block Surface: Prevents the head gasket from sealing correctly.
Reusing Old Head Bolts: Can result in insufficient clamping force and potential leaks.
Improper Valve Adjustment: Leading to poor performance or valve train noise after installation.
Solutions:
Follow Torque Specifications: Always use the manufacturer's specified torque sequence and values (found in the engine service manual). Use a calibrated torque wrench.
Ensure Clean Surfaces: Thoroughly clean the engine block deck surface before installing the new head and gasket. Check for any nicks or damage.
Use New Head Bolts: It is highly recommended to use new head bolts, especially for torque-to-yield (TTY) bolts if applicable to this engine model (consult manual).
Adjust Valves Correctly: Follow the service manual procedure for setting valve lash after the head is installed and torqued.
Common Post-Installation/Maintenance Issues:
Overheating: Can re-damage the head.
Coolant or Oil Leaks: Often due to installation errors or related system issues.
Loss of Compression: Could indicate issues with the new head, gasket, or piston rings.
Solutions:
Maintain Cooling System: Ensure the radiator, thermostat, coolant hoses, and water pump are in good condition. Use the correct coolant mixture.
Inspect Regularly: Check for leaks around the head gasket area and valve cover periodically.
Proper Break-in: Follow recommended engine break-in procedures if other major components were replaced.
Address Related Issues: Investigate and fix root causes of the original head failure (e.g., cooling system problems).
Consulting a detailed service manual for the specific KUBOTA D1503 or D1703 engine model is always recommended for precise procedures and specifications.