0445010836 0445010837cp4 Hiqh Performance Fuel Pump A6560700001for Benz Cls 350/400e350/400s350/400

This high-pressure diesel common-rail fuel pump assembly (Part ID: 0445010836 / 0 445 010 836; common OE cross-references include 0445010634, 0445010635, 0445010838, 0445010839, 12661059, 12638262, 12641847, etc.) is precision-engineered. Designed for the 6.6L V8 turbo-diesel platform—and widely used in heavy-duty pickups and commercial vehicles such as the Sierra 2500HD/3500HD, Silverado 2500HD/3500HD, and Express 3500/4500—this pump serves as the core power source for generating extreme rail pressure and ensuring stable fuel delivery. It efficiently pressurizes low-pressure diesel and delivers it evenly to the high-pressure fuel rail, guaranteeing a continuous and steady fuel supply across all engine speeds and operating conditions.

The pump body is constructed from high-strength forged alloy, while the core plunger and regulating valve spool undergo precision hardening and ultra-hard, wear-resistant coating treatments to effectively resist contamination and internal pressure loss. Upon installation, users will notice a significant improvement in power delivery: cold starts are quick and smooth, idle operation is stable, and pump noise is reduced. During heavy towing or high-speed cruising and acceleration, throttle responsiveness is noticeably enhanced, providing agile and robust power delivery that restores factory-level driving quality and excellent fuel efficiency.

Direct-from-factory manufacturing with optimized costs throughout the entire process. We provide a one-stop, high-standard parts supply solution, eliminating common points such as cumbersome procurement procedures, excessive intermediary markups, and inconsistent quality tolerances. Precision manufacturing via standardized assembly lines ensures highly consistent oil supply pressure and flow rates across all 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 inconsistent component quality, every high-pressure pump undergoes automated bench testing simulating real-world high-temperature and high-pressure conditions. Precise testing of sealing integrity and fuel return volume across various pressure ranges ensures the unit is ready for immediate installation, significantly reducing the time and cost associated with assembly and adjustment.

Large-scale, consistent inventory and rapid shipping capabilities. To mitigate downtime losses and operational delays caused by fuel system failures in commercial and commuter vehicles, our distribution centers maintain ample stock of key specifications. Orders are quickly processed and shipped within 24–48 hours, effectively shortening wait times and helping fleets and vehicle owners get back on the road quickly.

High-hardness, corrosion-resistant valve components with wear-resistant coatings. Designed to combat premature wear and valve sticking caused by poor diesel lubricity or high sulfur content in certain regions. Critical internal wear 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 environments and prolonged continuous operation, thereby significantly extending service life.

Heavy-duty pickup towing and high-load hauling: Large pickups equipped with 6.6L V8 diesel engines often operate under sustained high loads when towing heavy RVs, horse trailers, or construction equipment. Technicians install this high-pressure fuel pump to resolve issues such as sluggish acceleration on steep inclines or delayed fuel pressure response. Post-installation, the pump ensures rapid and stable high-pressure buildup and provides smooth, robust acceleration under heavy loads, guaranteeing safety and reliability during long-distance towing. Intercity Heavy-Duty Commercial Van & Logistics Delivery Operations: Large commercial cargo vehicles frequently operate on intercity routes, often facing stop-and-go traffic and the need to accelerate from a standstill while fully loaded. When vehicles exhibit sluggish cold starts, noticeable low-speed vibration, or intermittent "low oil pressure" warning lights, the maintenance team promptly installs a high-spec high-pressure fuel pump. This restores power output, improves fuel efficiency, and ensures operational timeliness.

Q: Can the fuel pump be installed and used immediately upon receipt? Is recalibration required?

A: Pressure and flow rate testing and calibration across all operating conditions are completed prior to shipment. Provided the fuel lines are clean, the unit can be put into service immediately after professional installation (adhering to standard torque specifications) and the purging of air from the fuel system.

Q: What are the lead times and stock availability for bulk orders?

A: We operate our own manufacturing facilities and warehousing centers, maintaining a steady stock of this model year-round. Standard orders ship within 24–48 hours of confirmation, while production schedules for bulk orders can be rapidly arranged.

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 build-up, fuel return volume, and sealing performance to ensure the product meets quality standards for vehicle installation.

Q: What is the warranty period for the product?

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