Diesel Fuel Injection Pump 294000-0173 Injection Oil Pump 22100-27020 for Toyota Avensis 1CD-Ftv Diesel Engine Parts

This high-precision high-pressure common rail diesel fuel supply pump assembly (Part ID: 294000-0173 / 2940000173; compatible with OE cross-references such as 294000-0170, 294000-0171, 294000-0172, 8-97381555-0, 8973815550, 8-97381555-3, etc.) is engineered for excellence. Designed for 4HK1/6HK1 series 5.2L and 7.8L medium-to-heavy-duty diesel engines—commonly found in NPR, NQR, FRR, and FSR trucks, buses, and heavy construction machinery—it serves as the core of the fuel system. It efficiently pressurizes low-pressure diesel and delivers it evenly to the high-pressure common rail, ensuring a continuous and stable fuel supply across all operating conditions.

The pump body is constructed from high-density forged alloy. Critical components, such as the plunger assembly and the Suction Control Valve (SCV), undergo precision hardening and feature ultra-hard, wear-resistant coatings to effectively prevent damage from impurities and high-pressure leakage. Upon installation, drivers and maintenance technicians will notice a significant improvement in power delivery: cold starts are crisp and rapid, low-speed idling is stable, and pump operation is quiet. Whether starting under full load, climbing steep slopes, or cruising long distances, throttle response is markedly enhanced, and acceleration is smooth and robust, helping to restore factory-level driving quality and excellent fuel efficiency.

Direct manufacturing from the source factory with optimized costs throughout the entire process. We provide a one-stop, high-standard parts supply solution, eliminating issues such as cumbersome procurement, excessive intermediary markups, and installation failures caused by out-of-tolerance parts. Precision manufacturing via standardized assembly lines ensures highly consistent oil supply pressure and flow rates across cylinders, delivering reliable power output while keeping maintenance budgets under control.

Dynamic pressure testing across all operating conditions and rigorous quality inspections. To address issues such as oil pressure fluctuations, sluggish acceleration, and intermittent warning lights often caused by substandard parts, every high-pressure pump undergoes automated bench testing before leaving the factory. Precision calibration of sealing integrity and fuel return volume—performed in environments simulating high temperatures and extreme pressures—ensures "ready-to-install" performance, significantly reducing labor costs associated with repeated removal, installation, and adjustment.

Large-scale inventory and rapid shipping response. Recognizing that commercial transport vehicles and construction machinery are high-utilization assets—where fuel system failures lead to costly downtime—our distribution centers maintain ample stock of core specifications. Orders are quickly processed and shipped within 24–48 hours, effectively shortening logistics wait times and helping fleets and owners get back to work quickly.

High-hardness, corrosion-resistant valve components with wear-resistant coatings. To combat premature wear and valve sticking caused by poor diesel lubricity or sulfur impurities in certain regions, critical internal components are crafted from premium special alloy bearing steel and treated with specialized surface hardening. This ensures exceptional fatigue and wear resistance, maintaining stability under harsh conditions and prolonged, high-load operation, thereby significantly extending service life.

Medium-duty truck intercity logistics and short-haul distribution: Medium-duty trucks equipped with 4HK1 engines frequently operate between intercity trunk routes and urban distribution centers, often facing conditions such as full-load starts and stop-and-go traffic. Maintenance technicians replace this high-pressure fuel supply pump when vehicles exhibit sluggish acceleration, struggle for power when climbing hills in high gears, or show a significant increase in fuel consumption. After replacement, high-pressure buildup is rapid and stable, and acceleration under heavy loads is robust and responsive, ensuring logistics tasks are completed on time and efficiently.

Construction sites and heavy-duty machinery operations: Construction machinery and dump trucks equipped with 6HK1 diesel engines operate in earthworks sites, often facing prolonged high-load and high-dust environments. When equipment experiences slow starting, severe idling vibration, or stalling under heavy loads, the maintenance team promptly installs a high-spec high-pressure fuel pump; the powerful high-pressure fuel supply restores the engine's abundant torque, allowing it to handle the demands of frequent stop-and-go operation smoothly.

Q: Can the fuel pump be installed and used immediately upon receipt? Is recalibration required?
A: All products undergo full-range pressure and flow testing and calibration before leaving the factory. Provided the fuel lines are clean, the unit can be put into immediate use after installation by a professional technician using standard torque specifications and proper air-purging of the fuel system.

Q: What are the shipping lead times and stock availability for bulk orders?
A: We operate our own production facilities and warehousing centers, maintaining large, year-round stock levels for this model. Standard orders ship within 24–48 hours of confirmation, while bulk orders can be quickly scheduled for production.

Q: What quality inspections does the product undergo before leaving the factory?
A: All products are assembled in a Class 100 cleanroom environment and undergo 100% dynamic bench testing at high temperatures and ultra-high pressures. We rigorously monitor pressure buildup, fuel return volume, and sealing performance to ensure the product meets quality standards for vehicle installation.

Q: What is the warranty period, and how is after-sales support handled?
A: We provide a 12-month warranty for this product. Should any performance failure occur due to non-human factors during the warranty period, we offer rapid after-sales technical support and service to protect your interests.