Original A775 Diesel Fuel Injection Pump Plunger 131153-9620 for Isuzu 6HH1

Product Details

Product Overview

This is a genuine, new A775 diesel fuel injection pump plunger, identified by the OEM part number 131153-9620 (also referenced as 9443610664). Designed as a direct replacement for the A775 injection pump series, this plunger is a critical internal component responsible for pressurizing and metering fuel for precise injection timing.

Commonly used in applications requiring the A775 pump, this plunger is a key service part for Isuzu 6HH1 diesel engines, which are frequently found in medium-duty trucks and commercial vehicles like the Isuzu NPR series (model years 1976-1993). As a genuine component, it ensures strict adherence to original manufacturing tolerances, providing reliable performance and long service life for diesel fuel systems.

Key Features & Benefits

• Genuine Quality: Manufactured to original equipment specifications, ensuring precise fit and function within the A775 injection pump.
• Exact Part Number: This is part number 131153-9620, the correct plunger for the A775 pump, eliminating guesswork during procurement.
• Durable Construction: Made from high-grade metal alloy, designed to withstand the extreme pressures and wear conditions inside a diesel injection pump.
• Reliable Fuel Metering: Ensures accurate fuel delivery and injection timing, which is critical for engine efficiency, power output, and emission control.
• Extended Service Life: As a genuine part, it is engineered for long-lasting performance, reducing downtime and maintenance frequency for your fleet.
• Direct Replacement: A drop-in component for the A775 pump, requiring no modifications for installation during pump overhaul or repair.

Technical Specifications

OEM Cross-Reference

This plunger is an original component. It is directly cross-referenced with the following OEM and manufacturer numbers for easy identification:

• / Bosch: 131153-9620
• Isuzu / Other: 9443610664
• Pump Model: A775

Note: Always verify the part number and pump model before ordering to ensure compatibility.

Compatibility

This fuel injection pump plunger is specifically designed for the A775 injection pump. It is commonly used in the following applications:

• Engine Model: Isuzu 6HH1
• Vehicle Model: Isuzu NPR series (medium-duty trucks)
• Era: Typically found in vehicles from the 1976-1993 model years.

Fitment is inferred based on the pump and engine model. We recommend consulting your injection pump service manual or a diesel specialist to confirm this is the correct internal part for your specific pump assembly.

Global Supply & Distribution

We are an experienced exporter of genuine diesel engine parts, including and Bosch injection system components. Our supply chain and logistics network facilitate fast, reliable delivery to major industrial centers and ports worldwide.

• Markets Served: North America, Europe, Southeast Asia, Middle East, Africa, and Oceania.
• Shipping: We offer various shipping options including express couriers (DHL, FedEx, UPS) and sea freight for larger orders. Delivery times are calculated from payment receipt.
• Trade Compliance: We adhere to international trade standards, ensuring proper documentation and customs clearance support for our B2B clients.

Quality Assurance

This component is sourced as a genuine, new part. Our quality assurance process includes:

• Genuine Sourcing: Direct from authorized distributors or verified original stock.
• Visual Inspection: Each part is inspected for correct part number, packaging, and physical condition before shipping.
• Warranty: We offer a 6-month warranty against manufacturing defects, providing peace of mind for your repair or overhaul project.
• After Warranty Service: We provide video technical support to assist with identification and installation questions.

FAQ

Q: How can I confirm this plunger fits my injection pump?
A: You must verify the model of your injection pump. This plunger is specifically for the A775 pump. Check the pump’s data plate for its model number. The part number on the plunger itself should be 131153-9620. If your pump is an A775, this is the correct internal plunger.

Q: What is involved in replacing this plunger?
A: Replacing a plunger is a complex internal repair of the injection pump. It requires complete disassembly of the pump, removal of the old plunger and barrel set, and precise installation of the new one. Due to the high precision required, this job should only be performed by a qualified diesel fuel injection technician using proper tools and a test bench for calibration afterward.

Q: What other parts should I replace when servicing the A775 pump?
A: When replacing the plunger, it is standard practice to also replace the corresponding barrel (delivery valve) and all seals and gaskets within the pump. It is also recommended to inspect and potentially replace the delivery valve holder and spring. Replacing the plunger alone in a worn pump may not restore full performance. We recommend a complete pump overhaul kit for the A775.