Product Details

Product Overview

This premium Kubota D1403 Cylinder Head Assembly (OEM #16414-03040 / 1G971-03040) is a direct-fit replacement designed for Kubota tractor and industrial machinery engines. Manufactured to meet or exceed OEM specifications, this cylinder head ensures optimal combustion chamber sealing, heat dissipation, and long-term durability. We ship globally to major markets including North America, Europe, Asia-Pacific, the Middle East, and South America, with fast logistics to industrial hubs and ports.

Key Features & Benefits

• Precision Engineering: Cast from high-grade alloy iron for superior strength and thermal stability.
• Direct Fitment: Machined to exact OEM tolerances for a perfect seal with no modifications required.
• Enhanced Durability: Hardened valve seats and guides resist wear from high-temperature operation.
• Rigorous Testing: 100% pressure-tested for leaks and cracks before shipment.
• Cost-Effective Solution: Reliable aftermarket alternative to Kubota genuine parts without compromising quality.

Technical Specifications

OEM Cross-Reference

This cylinder head directly replaces the following OEM part numbers:

• Kubota: 16414-03040, 1G971-03040
• Alternative/Cross: 16414-03041 (supersession), 1G971-03041

Note: Always verify your existing part number before purchase. This head is a bare casting; transfer of existing valves, springs, and components is required.

Compatibility

• Engine Models: Kubota D1403, D1403-B, D1403-E
• Vehicle/Equipment Applications:
  • Kubota L-Series Tractors (L245, L260, L275, L285)
  • Kubota B-Series Tractors (B7100, B7200, B8200)
  • Kubota M-Series Utility Tractors (M4050, M4500)
  • Industrial applications: Generators, Forklifts, Excavators using D1403 engine
• Year Range: 1980s-1990s (verify specific engine serial number)

Global Supply & Distribution

We maintain robust inventory for international B2B buyers. Our logistics network ensures fast, reliable delivery to:

• North America: Los Angeles, Chicago, Houston, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Shanghai, Singapore, Sydney, Tokyo
• Middle East & Africa: Dubai, Jeddah, Durban
• South America: Santos, Buenos Aires, Valparaiso

We offer EXW, FOB, CIF, and DDP terms. Bulk orders and long-term supply agreements are welcome.

Quality Assurance

• Manufacturing Standard: ISO 9001:2015 certified production facility.
• Material Certification: All castings meet tensile strength and hardness specs.
• Testing: 100% pressure test at 6 bar (87 psi) to ensure no porosity or cracks.
• Warranty: 12-month warranty against manufacturing defects.
• Packaging: Individually boxed with foam protection to prevent transit damage.

FAQ

Q1: Is this cylinder head a complete assembly or a bare casting?
A: This is a bare cylinder head. It does not include valves, springs, seals, or camshaft. You must transfer these components from your old head or purchase a new valve kit separately. We recommend replacing valve stem seals and checking valve guides during installation.

Q2: How can I confirm this head fits my Kubota D1403 engine?
A: Verify the casting number on your current head (usually located on the intake manifold side). It should read 16414-03040 or 1G971-03040. Also check your engine serial number. This head is compatible with most D1403 variants, but minor design changes occurred in later production years. Contact our technical team with your engine serial for 100% confirmation.

Q3: What is the recommended installation procedure?
A: Always use a new head gasket and cylinder head bolts. Clean the block surface thoroughly. Tighten head bolts in the manufacturer’s specified sequence and torque pattern: first pass to 40 Nm, second pass to 80 Nm, then final angle-tighten 90 degrees. After installation, run the engine to operating temperature, then re-torque the head bolts once cool (check your service manual for exact specs). We recommend using a thread lubricant on head bolts for accurate torque readings.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .