Mitsubishi 4DQ5 Engine Water Pump – Heavy-Duty Cooling Pump for Excavator & Industrial Machinery

Product Details

Product Overview

This premium Mitsubishi 4DQ5 Engine Water Pump is a direct-fit replacement designed for optimal cooling performance in heavy-duty excavators, construction machinery, and industrial diesel engines. Manufactured to meet or exceed OEM specifications, this water pump ensures reliable coolant circulation, preventing engine overheating and extending service life. We are a trusted global supplier, shipping to North America, Europe, Asia-Pacific, the Middle East, and Africa, with fast delivery to major ports and industrial hubs.

Key Features & Benefits

• Precision Engineering: Cast from high-strength ductile iron with a precision-machined impeller for maximum flow efficiency and reduced cavitation.
• Durable Sealing: Equipped with a high-quality ceramic mechanical seal and a nitrile rubber gasket to prevent leaks and withstand high temperatures.
• Direct Fitment: Bolt-on replacement for the Mitsubishi 4DQ5 engine, eliminating the need for modifications or additional adapters.
• Extended Service Life: Pre-lubricated, sealed bearings reduce friction and wear, ensuring long-term reliability in demanding work cycles.
• Rigorous Testing: Every unit is tested for pressure, flow rate, and leak integrity before shipment to guarantee 100% performance.

Technical Specifications

OEM Cross-Reference

This water pump is a direct replacement for the following OEM and aftermarket part numbers:

• Mitsubishi OEM: ME074536, ME074537
• Alternative Part Numbers: 8-98023-526-0, 8-98023-527-0
• Cross-Reference Brands: Valid for use in Caterpillar, Komatsu, and Hitachi excavators equipped with the 4DQ5 engine.

Compatibility

• Engine Models: Mitsubishi 4DQ5 (direct fit), 4DQ2, 4DQ3 (with minor modifications).
• Vehicle/Equipment Applications:
  • Excavators: Caterpillar 320, 320D; Komatsu PC200-7, PC200-8; Hitachi ZX200, ZX210.
  • Industrial: Forklifts (Mitsubishi FD series), generators, and agricultural tractors.
• Year Ranges: Compatible with equipment manufactured from 2005–2020 (verify engine serial number for exact fitment).

Global Supply & Distribution

• Worldwide Shipping: We ship via DHL, FedEx, UPS, and sea freight (FOB/CIF) to over 60 countries.
• Major Markets Served: United States, Canada, Germany, UAE, Saudi Arabia, Australia, China, Japan, South Korea, Brazil, and South Africa.
• Fast Delivery: Standard inventory ships within 24–48 hours; bulk orders (50+ units) dispatched within 5–7 days.
• Trade Compliance: All products comply with ISO 9001:2015 standards and are CE marked for European markets.

Quality Assurance

• Manufacturing Standards: Produced in a TS16949-certified facility with CNC machining and robotic assembly.
• Certifications: ISO 9001:2015, CE, and SGS inspection reports available upon request.
• Warranty: 12 months against manufacturing defects from the date of purchase.
• Testing: 100% pressure tested (2 bar for 5 minutes) and flow-rate verified before packaging.

FAQ

Q1: Will this water pump fit my Mitsubishi 4DQ5 engine without modifications?

A: Yes, this water pump is a direct bolt-on replacement for the Mitsubishi 4DQ5 engine. It matches the original mounting pattern, impeller depth, and outlet/inlet diameters. No modifications are needed for standard applications. Always verify your engine serial number to ensure compatibility.

Q2: What is the recommended installation procedure for this water pump?

A: 1. Drain the coolant and remove the fan belt and fan. 2. Remove the old water pump bolts and gasket. 3. Clean the mounting surface thoroughly. 4. Apply a thin layer of gasket sealant (optional) and install the new gasket. 5. Bolt the new pump into place using the original bolts (torque to 25–30 Nm). 6. Reinstall the fan, belt, and refill coolant. 7. Run the engine and check for leaks. For detailed steps, refer to the engine service manual.

Q3: How can I extend the life of this water pump?

A: To maximize service life: 1. Use a 50/50 mix of approved coolant and distilled water to prevent corrosion. 2. Replace the coolant every 2 years or 4,000 hours. 3. Inspect the fan belt tension monthly—over-tightening can damage the pump bearing. 4. Avoid running the engine with a low coolant level, as this can cause seal damage due to air pockets.