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Diesel Fuel Unit Pump 0414799020 0986445024 A0280749502 for Mercedes Benz Eup Electronic Fuel Pump
| MOQ: | 1 pieces |
| Price: | US $134-142 / piece |
| Payment Method: | L/C,D/A,D/P,T/T |
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Product Name
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High Quality Common Rail Diesel Fuel Injection Pump
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Place of Origin
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Wuhan,China
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Warranty
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3 Months
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Delivery time
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3-15 Days, subject to the order quantity
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Quality
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100% Tested
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Packing
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Customer Requirement
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Service
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After-Sales Service
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Size
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Standard Size
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Payment
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TT,Trade Assurance,PayPal,Credit Card
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Advantage
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Perfect Fit
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This heavy-duty diesel unit pump (Part ID: 0414799020 / 0 414 799 020; common OE cross-references include 0414799002, 0414799003, 0414799015, 0986445012, 20440388, etc.) is precision-engineered for the D12 series 12.0L inline-six heavy-duty diesel engine platform. It is widely utilized in heavy-duty semi-trucks, mining dump trucks, long-distance coaches, and heavy-duty generator sets. As the core power unit for generating ultra-high injection pressures within PLD/UPS fuel systems, it is responsible for instantly boosting low-pressure diesel and precisely delivering it to cylinder injectors—driven by the camshaft—thereby ensuring a stable and abundant fuel supply for large diesel engines.
Manufactured to standards emphasizing "tight tolerance fits" and "stable, ultra-high-pressure output," the pump body is constructed from high-strength forged alloy steel. The plunger assembly utilizes aerospace-grade, specially hardened bearing steel featuring a dense, ultra-hard surface coating that effectively prevents internal scratching and pressure loss caused by fuel impurities. Upon installation, drivers and maintenance technicians will notice immediate, tangible improvements: cold starts are crisp and rapid, and severe vibrations during low-speed idling are significantly reduced. Under demanding conditions—such as heavy-load hill climbing, high-load mining operations, or sustained high-speed cruising—throttle response is sharp and robust, acceleration is smooth yet powerful, and the unit delivers satisfying fuel efficiency alongside stable, responsive handling.
- Cost-Effective Solution: Effectively reduces procurement expenses by eliminating intermediary markups associated with component tolerance stack-up issues, uneven fuel supply pressure across cylinders, and high-pressure leakage risks. Leveraging standardized production bases for end-to-end precision control, the process ensures highly consistent fuel supply pressure and flow rates across cylinders, thereby cutting maintenance budgets while providing reliable power for vehicle operations.
- Rigorous Quality Control: Undergoes strict quality inspections on ultra-high-pressure digital dynamic test benches. This addresses common issues found in low-quality parts—such as response delays, pressure-release valve sticking (causing engine misfires and vibration), and wasted labor/costs from repeated disassembly and adjustment. Each unit undergoes automated testing and precision calibration of flow rates and sealing performance across various pressure ranges—simulating real-world high-temperature and ultra-high-pressure conditions—ensuring "ready-to-install" status and significantly saving time and costs associated with installation and tuning.
- Rapid Fulfillment: Features large-scale warehousing with readily available stock for immediate dispatch. Recognizing that daily commuter and commercial transport vehicles are high-utilization assets, the system mitigates the risk of costly delays, contract penalties, and lost revenue caused by fuel system failures and vehicle downtime. Warehouses maintain ample stock of popular specifications; orders are prioritized for packing and dispatch within 24–48 hours of confirmation. This drastically shortens logistics cycles, helping fleets and owners quickly restore vehicle availability and avoid losses associated with downtime.
- Enhanced Durability: Features specially quenched alloy plungers and wear-resistant protective coatings. Designed to combat premature wear and valve sticking caused by regional variations in diesel lubricity and sulfur content. Core valve components utilize high-strength specialty bearing steel and hardened, corrosion-resistant surface treatments. This significantly boosts fatigue and wear resistance, ensuring stable performance even under harsh conditions and prolonged high-load operation, thereby avoiding the extra costs associated with frequent repairs.
| Parameter Name | Parameter Value |
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| Product Name | Heavy-duty Diesel Electronically Controlled Unit Pump / High-pressure Fuel Pump Unit |
| Standard OE Part Number | 0414799020 |
| Cross-Reference Numbers | 0 414 799 020 / 0414799002 / 0414799003 / 0414799015 / 20440388 |
| Applicable Engine Platform | D12 Series 12.0L Diesel Engine Platform |
| Fuel Supply System | PLD / UPS Electronically Controlled Unit Pump System |
| Pump Body Material | High-strength, High-density Forged Alloy Steel |
| Core Plunger Material | Aerospace-grade Quenched Bearing Steel / Wear-resistant Hardened Coating |
| Maximum Operating Pressure | ≥ 1800 bar (Steady-state High Pressure) |
| Operating Temperature Range | -40°C to +125°C |
| Internal Sealing Components | OEM-grade High-temperature/High-pressure Special Fluoroelastomer (FKM O-Rings) |
| Unit Net Weight | Approx. 1.85 kg / unit |
| Factory Testing Standard | 100% Automated Test Bench Verification (Full-load Pressure & Sealing Tests) |
Long-haul logistics operations for heavy-duty semi-trucks: Long-haul trucks frequently operate under high-load cruising conditions on inter-provincial highways, demanding exceptional stability in high-pressure generation and sustained power output from the fuel pump. When drivers notice sluggish acceleration, power loss, or a significant increase in fuel consumption—particularly during heavy-load hill climbs—maintenance teams can promptly replace the unit with this high-precision unit pump. Following installation, fuel pressure builds strongly and steadily, allowing the engine to deliver full power, thereby significantly improving transport efficiency and fuel economy.
Harsh Operating Conditions for Mining Dump Trucks and Heavy Construction Machinery: Mining dump trucks and large-scale construction equipment operate in grueling environments characterized by heavy dust, high loads, and frequent stop-and-go cycles. When equipment experiences hard starting, severe idling vibration, or stalling under heavy loads, mechanics can promptly replace the unit pump assembly. Precision oil pressure regulation allows the engine to generate massive torque instantly at low RPMs, easily handling heavy loads and frequent starts/stops while ensuring high operational uptime.
A: Each high-pressure unit pump undergoes full-range pressure and flow calibration before leaving the factory. Provided the fuel lines are clean, professional technicians can install the unit using standard torque specifications and bleed air from the fuel system to put it into immediate service.
A: We operate our own manufacturing facilities and large-scale warehouses, maintaining substantial stock of this model. Standard orders can ship within 24–48 hours, and we can rapidly schedule production for large-volume orders.
A: All high-pressure unit pumps are assembled in Class 100 cleanrooms and undergo 100% dynamic bench testing at high temperatures and ultra-high pressures. We strictly monitor pressure build-up, fuel return volume, and sealing performance to ensure stable on-vehicle operation.
A: We offer a 12-month warranty on this product. Should any performance failure occur due to non-human factors during the warranty period, we provide rapid replacement or technical support to safeguard your interests.
