Skip to content
B2B inquiry | manual quote | global shipping Request a Quote
One-Stop Excavator & Diesel Engine Parts Supplier B2B Machinery Parts Sourcing Request Quote

Diesel Engine Parts

Isuzu 6SD1/6SD1T Engine Water Pump 1-13650068-1 for Hitachi EX300-5 EX350-5 Excavator

MOQ: 1pcs Price: Negotiable B2B inquiry quote
Part No.
1-13650068-1 / 1136500681
Engine Model
Isuzu 6SD1, 6SD1T
Application
Hitachi EX300-5, EX350-5 Excavators
Material
Cast Iron Housing / Steel Impeller
Chat on WhatsApp

Send OEM number, quantity, destination, or photos. We will reply with quotation, lead time, and fitment notes.

Product Details

1-13650068-1 1136500681 Engine Water Pump For Isuzu 6sd1 6sd1t Hitachi Excavator Ex300-5 Ex350-5

Product Overview

This high-quality engine water pump, identified by OEM part number 1-13650068-1 (1136500681), is a direct replacement component specifically engineered for the Isuzu 6SD1 and 6SD1T diesel engines. It is primarily designed for heavy-duty applications in Hitachi EX300-5 and EX350-5 excavators. As a critical component of the engine’s cooling system, this water pump ensures optimal coolant circulation, preventing overheating and maintaining consistent operating temperatures under extreme working conditions. We serve a global network of dealerships, repair shops, and fleet operators, with major distribution hubs in North America, Europe, and the Asia-Pacific region.

Key Features & Benefits

  • Premium Build Quality: Manufactured using high-grade cast iron and precision-engineered bearings to withstand high rotational speeds and thermal stress.
  • Leak-Proof Design: Features a high-quality mechanical seal with a ceramic face and carbon ring to ensure zero leakage and long service life.
  • Direct OEM Fitment: Exact match to the original dimensions, bolt patterns, and impeller design, allowing for plug-and-play installation without modifications.
  • Enhanced Durability: Designed to handle the specific coolant flow and pressure requirements of the Isuzu 6SD1 series, reducing the risk of cavitation and premature wear.
  • Operational Reliability: Ensures stable engine temperatures, directly contributing to improved fuel efficiency and reduced downtime in demanding excavation environments.

Technical Specifications

Specification Detail
Part Number 1-13650068-1 / 1136500681
Engine Model Isuzu 6SD1, 6SD1T
Part Type Engine Water Pump (Coolant Pump)
Material Cast Iron Housing / Steel Impeller
Seal Type Mechanical Seal (Ceramic/Carbon)
Bearing Type Dual Row Sealed Ball Bearing
Application Hitachi EX300-5, EX350-5 Excavators

OEM Cross-Reference

This water pump is a direct replacement for the following original equipment manufacturer (OEM) numbers:

  • Isuzu: 1-13650068-1, 1136500681
  • Hitachi: 4293513, 4293514 (Note: Please verify your specific chassis number for exact compatibility)

If your existing part has a different number, please contact our technical support team for confirmation.

Compatibility

Engine Applications:

  • Isuzu 6SD1 (Naturally Aspirated)
  • Isuzu 6SD1T (Turbocharged)

Vehicle / Equipment Applications:

  • Hitachi EX300-5 Excavator
  • Hitachi EX350-5 Excavator
  • May also fit other equipment utilizing the Isuzu 6SD1 series engine (consult factory specifications)

Global Supply & Distribution

We maintain a robust global logistics network to ensure fast and reliable delivery worldwide. Our key service regions include:

  • North America: Fast shipping to the USA, Canada, and Mexico via major ports (Los Angeles, Houston, New York).
  • Europe: Regular shipments to Germany, Netherlands, UK, and France via Rotterdam and Hamburg.
  • Asia-Pacific: Direct distribution to Australia, Singapore, and Japan.
  • Middle East & Africa: Serving UAE, Saudi Arabia, and South Africa.

We have extensive experience in international trade, including customs clearance documentation and export compliance. Most orders are dispatched within 24-48 hours of payment confirmation.

Quality Assurance

  • Manufacturing Standards: Produced in ISO 9001 certified facilities, ensuring consistent quality control.
  • Testing: Each water pump is subjected to pressure and leak testing before packaging to verify seal integrity.
  • Warranty: We offer a standard 12-month warranty against manufacturing defects from the date of purchase.

FAQ

Q1: Is this water pump a direct fit for my Hitachi EX300-5, or do I need any modification kits?
A1: Yes, this is a direct OEM replacement part. It matches the original specifications and bolt pattern of the Isuzu 6SD1 engine used in the EX300-5 and EX350-5. No additional modifications or adapter kits are required for installation.

Q2: What is the recommended maintenance interval for replacing this water pump?
A2: While the water pump is a durable component, it is generally recommended to inspect it during major engine overhauls or when replacing the coolant. As a proactive measure, replacing the water pump every 2,000 to 3,000 operating hours (or as part of a cooling system rebuild) is advised to prevent unexpected failure. Always check for signs of coolant leakage or bearing noise.

Q3: Can I install this water pump myself, or should I hire a professional mechanic?
A3: Replacing a water pump on a heavy-duty engine like the 6SD1 requires mechanical knowledge and specific tools (e.g., torque wrench, gasket scraper). While it is a straightforward task for an experienced diesel mechanic, we recommend professional installation to ensure proper gasket seating, correct torque on bolts, and to avoid coolant system contamination, which could void the warranty.

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 .