Product Overview

This high-quality Fuel Injection Plunger and Barrel Assembly, referencing OEM numbers 134178-1820 and 9443610670, is a critical component for PT (Pressure-Time) type diesel fuel injection systems. Designed for precision fuel metering and reliable engine performance, this plunger assembly (Model PT44) is manufactured to strict tolerances for direct replacement. We serve a global network of B2B buyers, including distributors and repair shops in North America, Europe, Asia-Pacific, the Middle East, and South America, ensuring fast and reliable shipping to major industrial hubs.

Key Features & Benefits

• Precision Engineering: Manufactured from high-grade alloy steel for exceptional wear resistance and dimensional stability, ensuring consistent fuel delivery.
• Enhanced Durability: Features a hardened and ground surface finish to withstand the extreme pressures and friction within the injection pump, extending service life.
• Direct Fit Replacement: Designed as an exact OEM replacement for part numbers 134178-1820, 9443610670, and 944310670, ensuring a seamless installation without modifications.
• Optimal Fuel Efficiency: Tight clearance between the plunger and barrel minimizes fuel leakage, maintaining correct injection timing and pressure for improved engine performance.
• Cost-Effective Solution: Provides a reliable alternative to purchasing a complete injection pump assembly, offering significant savings for fleet maintenance and engine overhauls.

Technical Specifications

OEM Cross-Reference

This plunger assembly is a direct replacement for the following OEM and cross-reference numbers. Please verify your existing part number before ordering.

• Primary OEM: 134178-1820, 9443610670
• Alternate Numbers: 1341781820, 944310670, 9 443 610 670
• Model Reference: PT44

Compatibility

• Engine Type: Designed for PT (Pressure-Time) type diesel fuel injection systems found in various industrial and agricultural diesel engines.
• Vehicle/Application: Suitable for a wide range of diesel engines requiring this specific plunger size and configuration. Common in heavy-duty truck, generator, and construction equipment applications.

Global Supply & Distribution

• Worldwide Shipping: We offer reliable shipping solutions to all major global destinations via air, sea, and express couriers (DHL, FedEx, UPS, TNT).
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, Poland), Asia-Pacific (Australia, Japan, South Korea, Singapore), Middle East (UAE, Saudi Arabia), and South America (Brazil, Chile, Argentina).
• Fast Delivery: Stock items are dispatched within 24-48 hours of order confirmation. We provide fast transit to major ports and industrial centers.
• Export Expertise: Our team has extensive experience in international trade, ensuring all documentation and customs requirements are handled professionally.

Quality Assurance

• Manufacturing Standards: Our products are manufactured in ISO-certified facilities, adhering to strict quality control measures from raw material selection to final inspection.
• Testing: Each plunger and barrel assembly is tested for dimensional accuracy, surface finish, and pressure integrity to ensure it meets or exceeds OEM specifications.
• Warranty: This product is backed by a 4-month warranty against manufacturing defects in materials and workmanship.

FAQ

Q: How can I verify if this PT44 plunger is the correct replacement for my injection pump?
A: First, locate the part number on your existing plunger or barrel. It should be stamped or laser-etched on the component. The primary numbers are 134178-1820 or 9443610670. If your pump is a PT type and the number matches, this is the correct part. You can also measure the diameter and length of your existing plunger to compare with our specifications.

Q: What is the recommended installation procedure for a plunger and barrel assembly?
A: Installation requires extreme cleanliness. The work area and tools must be free of dirt and debris. Lubricate the plunger and barrel with clean diesel fuel or assembly oil before insertion. Do not force the plunger into the barrel. Ensure the alignment marks (if any) are correctly positioned. We recommend installation by a qualified diesel fuel injection technician to avoid damaging the precision surfaces.

Q: How can I maximize the service life of this PT44 plunger assembly?
A: The most critical factor is fuel quality. Use clean, high-quality diesel fuel with the correct lubricity. Always replace the fuel filter at the recommended intervals. Contaminants (water or dirt) are the primary cause of premature wear. Additionally, ensure the injection pump housing is in good condition and the internal clearances are within spec.