Zexel Nozzles Plunger A724 A741 A769 A156 090150-4810 140163-4420 For Isuzu Excavator Diesel Engine

Product Details

Product Overview

This high-precision Injector Plunger is a critical component for diesel fuel injection systems, specifically designed for Zexel-type nozzles. Identified by the model numbers A724, A741, A769, and A156, this plunger is commonly used in Isuzu Medium Duty trucks and excavator applications. The primary part number is 090150-4810, with a cross-reference to 140163-4420, ensuring you receive a direct replacement for your existing fuel system components.

Manufactured from high-grade steel, this plunger is engineered to withstand the extreme pressures and temperatures within a diesel injection pump. It is a genuine new part, offering a reliable solution for restoring fuel delivery performance in heavy equipment. While fitment is primarily associated with Isuzu engines, always verify compatibility with your specific pump model to ensure a perfect match.

Key Features & Benefits

• Precision Engineering: Manufactured to OEM tolerances for accurate fuel metering and injection timing, maximizing engine efficiency and power output.
• Durable Construction: Made from hardened steel to resist wear and corrosion, ensuring a long service life even in demanding excavator and truck applications.
• Direct OEM Replacement: Designed to match the exact specifications of the Zexel A724, A741, A769, and A156 models, simplifying the replacement process.
• Improved Engine Performance: Restores proper fuel atomization, leading to smoother idling, better throttle response, and reduced smoke emissions.
• Cost-Effective Solution: A high-quality alternative to complete pump replacement, offering significant savings while maintaining performance standards.
• Easy Identification: The part numbers 090150-4810 and 140163-4420 provide clear cross-referencing for existing inventory and ordering accuracy.

Technical Specifications

OEM Cross-Reference

This plunger is a direct replacement for the following Zexel and Isuzu OEM numbers. Please confirm your existing part number against this list to ensure compatibility.

• Zexel Part Numbers: 090150-4810, 140163-4420
• Model Cross-Reference: A724, A741, A769, A156
• Isuzu OE Reference: A724

Compatibility

This plunger is commonly used for the following applications. We recommend verifying fitment with your specific engine or pump model before purchasing.

• Engine Applications: Isuzu Medium Duty Diesel Engines (commonly associated with 4HK1, 6HK1, or similar series).
• Vehicle Applications: Isuzu Medium Duty Trucks (e.g., NPR, NQR, F-Series).
• Equipment Applications: Excavators and heavy machinery utilizing Isuzu engines with Zexel inline or rotary injection pumps.
• Pump Type: Designed for Zexel (Denso) type fuel injection pumps.

Global Supply & Distribution

We offer worldwide shipping to support international B2B buyers and industrial supply chains. Our logistics network ensures fast and reliable delivery to major ports and industrial hubs across North America, Europe, Asia-Pacific, the Middle East, and South America. We maintain robust export experience and comply with international trade standards to ensure smooth customs clearance. Whether you are a distributor in Germany, a repair shop in the UAE, or a fleet operator in Australia, we can deliver this critical engine part efficiently.

Quality Assurance

Every plunger is manufactured under strict quality control procedures to ensure it meets or exceeds OEM specifications. We source from reputable factories that adhere to ISO quality management standards. Each unit is inspected for dimensional accuracy, surface finish, and material hardness before shipment.

• Warranty: 6-month warranty against manufacturing defects.
• Testing: Dimensional and material integrity checks performed on each batch.
• Support: After-warranty service includes video technical support to assist with installation and troubleshooting.

FAQ

Q: How do I confirm this plunger fits my Isuzu excavator engine?

A: First, locate the part number on your existing plunger or injection pump. Compare it to our listed numbers: 090150-4810 or 140163-4420. If your part matches one of these numbers, or if your plunger is stamped with A724, A741, A769, or A156, it is a direct fit. If you are unsure, please contact us with your engine model (e.g., 4HK1) and pump serial number for verification.

Q: What is the recommended installation procedure for this plunger?

A: Installation should be performed by a qualified diesel technician. The plunger must be installed with absolute cleanliness to prevent contamination. Ensure the barrel bore is clean and lubricated with clean diesel fuel. Do not force the plunger into the barrel. After installation, the injection pump must be re-calibrated on a test bench to ensure correct fuel delivery timing and volume. Improper installation can lead to engine damage.

Q: How can I maximize the service life of this plunger?

A: The longevity of the plunger depends heavily on fuel quality. Always use clean, filtered diesel fuel and replace your fuel filters at recommended intervals. Water or abrasive particles in the fuel are the primary cause of plunger wear. Additionally, ensure your injection pump has proper lubrication. If the engine has been sitting for a long period, prime the fuel system before cranking to avoid dry start wear.