Product Overview

This high-quality Ad-type plunger, model A729, is a precision-engineered fuel injection component designed for demanding diesel engine applications. As a direct replacement for OEM part number 131153-5020 (also listed as 1311535020), this plunger is manufactured to the highest standards to ensure reliable performance and extended service life. We serve a global B2B clientele across North America, Europe, Asia-Pacific, and the Middle East, offering fast and secure shipping from our strategic warehouses.

Key Features & Benefits

• Precision Engineering: Manufactured with tight tolerances to ensure accurate fuel metering and optimal injection timing.
• Superior Durability: Constructed from high-grade alloy steel with a hardened surface to resist wear and corrosion, even under high-pressure conditions.
• Improved Performance: Designed to restore or enhance engine power, fuel efficiency, and reduce exhaust emissions.
• Direct Fitment: A true OEM replacement part, ensuring a hassle-free installation without modifications.
• Cost-Effective Solution: Provides a reliable alternative to expensive OEM parts, reducing maintenance costs without compromising quality.

Technical Specifications

OEM Cross-Reference

This plunger is a direct replacement for the following OEM part numbers:

• 131153-5020 (Original OEM Number)
• 1311535020 (Alternative Format)
• A729 (Model Designation)

Compatibility

This plunger is specifically designed for use in Hitachi EX200-5 excavators. It is a critical component within the fuel injection pump system. For precise fitment verification, please cross-reference your existing part number (131153-5020) with your engine’s fuel injection pump model. This part is typically used in Isuzu 6BD1 or similar engines powering this excavator series.

Global Supply & Distribution

• Worldwide Shipping: We offer reliable shipping solutions to all major global destinations via air, sea, and express courier (DHL, FedEx, UPS).
• Major Markets: Our products are regularly exported to North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Japan, Korea, Australia, Singapore), and the Middle East (UAE, Saudi Arabia, Qatar).
• Fast Delivery: Stock is held in strategic distribution centers to ensure rapid dispatch, with typical delivery to major ports in 5-15 working days.
• Trade Compliance: We adhere to international trade regulations and provide all necessary documentation for smooth customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities, ensuring consistent quality and process control.
• Testing: Each plunger undergoes rigorous dimensional and pressure testing to guarantee perfect fit and function.
• Warranty: We offer a comprehensive 12-month warranty against manufacturing defects, providing peace of mind for your procurement.

FAQ

Q: Is this plunger a direct replacement for the 131153-5020 part on my Hitachi EX200-5?
A: Yes, this A729 plunger is a direct OEM replacement for part number 131153-5020. It is designed to be a drop-in fit for the fuel injection pump on the Hitachi EX200-5 excavator. We recommend verifying your current part number before ordering.

Q: What is the recommended installation procedure for this high-pressure plunger?
A: Installation should be performed by a qualified diesel technician. It is critical to ensure absolute cleanliness during installation. The plunger and its bore must be lubricated with clean diesel fuel or assembly oil. Do not force the plunger; it should slide smoothly. Incorrect installation can lead to pump seizure or failure.

Q: How can I ensure a long service life from this plunger?
A: The longevity of the plunger is highly dependent on fuel quality. Always use clean, high-quality diesel fuel and replace your fuel filters regularly. Contaminants in the fuel are the primary cause of plunger wear. If you are experiencing poor performance, also inspect and replace the delivery valve if necessary.