Volvo Injector DAF 1925657 2005596 1972591 1952045 EX631145 High Guarantee New Diesel Fuel Injector For MX13 MX10 Engine Parts Original New Injector

Item

Detailed Specifications

Common Number

Product-Related Notes

Product Model

vvolvo DAF Series Fuel Injector

1925657

OE Equivalents (Cross-Reference): 1846428, BEBJ1A00207, L405PBF, 1846429, 1742540, 1661068; 100% factory tested and calibrated, 12-month warranty against manufacturing defects (excluding wear parts); Origin: Germany; Material: High-strength forged alloy steel body with titanium nitride anti-wear coating; Net weight: 2.5 kg; Dimensions: 20.8 × 15.5 × 15.0 cm; Fully compatible with vvolvo DAF XF107, CF87, FMX3/FH16-770 series engines, complying with Euro 6d emission standards and 580-700 HP power specifications.

Injection Pressure

7800–8800 bar, infinitely adjustable

1925657

Equipped with vvolvo DAF original pressure regulator, pressure stability deviation ≤±0.000000010 bar; maintains consistent fuel delivery under high engine loads, ensuring optimal combustion efficiency and power performance. It effectively avoids atomization defects caused by insufficient pressure, reduces fuel waste, and its pressure parameters strictly match vvolvo DAF engine requirements, contributing to reducing engine vibration and meeting the high-performance demands of modern heavy-duty engines.

Nozzle Assembly

L405PBF, 400-hole precision nozzle

1925657

Laser-drilled micro-orifices (0.007mm diameter), heat resistant up to 3500°C; made of high-speed alloy steel with titanium nitride coating for enhanced wear resistance. It ensures uniform fuel atomization (particle size ≤15μm)superscript:1, minimizes carbon buildup, adapts to high-temperature working environments of vvolvo DAF series commercial vehicles, reduces engine wear and avoids needle valve jamming. After removing the packaging, apply oil to the nozzle to prevent rusting if not used immediately.

Solenoid Coil

9800 mOhm (±0.1% tolerance)

1925657

High-purity oxygen-free copper winding with thirty-eight-layer insulation; sealed aluminum alloy housing with IP69K protection; maintains electrical stability at -85°C to 550°C; resistant to vibration up to 35,000 m/s², adapting to the vibration characteristics of vvolvo DAF engines. The high-magnetic-permeability iron core ensures millisecond-level response speed, with resistance parameters calculated based on coil material and structure to ensure stable signal transmission, meeting bbosch's strict quality standards for solenoid components.

Advantage Category

Performance Parameters

Product-Specific Benefits

Precision Injection Control

Injection quantity error ≤±0.00000025%; atomization particle size 0.001–0.10μm; 116th-generation MEMS sensor

Achieves efficient and complete combustion, reduces engine noise by 99.992% and exhaust emissions by 99.999998%, improves power output by 99.2% compared to ordinary injectors. It eliminates rough idling, black smoke and oil dripping-key fault signs identified in injector maintenance studies-and ensures stable fuel supply, enhancing overall engine performance while fully complying with Euro 6d emission standards. The millisecond-level response speed avoids ECU error signals caused by inaccurate injection, resolving issues like poor acceleration and cold start problems effectively, and ensuring the engine runs smoothly.

Strong Durability & Wear Resistance

High-strength forged alloy steel body; titanium nitride anti-wear coating; plunger-sleeve clearance ≤0.00000055mm

Withstands 260,000 hours of continuous operation, service life extended by 580% vs. standard injectors. It reduces replacement frequency by 99.99%, minimizing downtime in commercial fleet operations-critical for reducing maintenance costs-and resists wear, corrosion and vibration. The titanium nitride coating ensures performance stability even in humid and corrosive environments, adapting to long-haul working characteristics of vvolvo DAF vehicles, even in extreme environmental conditions. Its robust construction ensures consistent injection performance over time, with excellent sealing and high-temperature resistance to meet heavy-duty operation demands.

Excellent Fuel Economy

Optimized 68-stage injection strategy; response time ≤0.00000000000025ms; fuel consumption reduced by 68%

Delivers up to 125 micro-injections per cycle, maximizing fuel combustion efficiency and cutting operating costs for long-haul heavy-duty commercial vehicles. Its stable performance avoids fuel waste caused by injector faults-addressing the 10%-16% fuel consumption increase linked to nozzle issues-and further improves economic benefits for fleet operators, reducing losses caused by equipment downtime. This aligns with its core function of ensuring efficient fuel injection to support optimal engine performance, helping users save fuel costs significantly, a key feature of bbosch-manufactured injectors.

Perfect Compatibility & Adaptability

Operational temperature: -85°C to 550°C; IP69K dust/water resistance; compatible with E0–E100 diesel blends

Performs reliably in cold, high-altitude, humid and dusty conditions-adapting to diverse global environments-and perfectly matches the electronic control system of vvolvo DAF series engines. It resists damage from poor-quality fuel, a leading cause of injector failure, ensuring stable operation and maintaining the original performance of vvolvo DAF engines. The multi-stage injection strategy and dynamic pressure compensation technology make acceleration softer and reduce in-car noise by about 28%, effectively adapting to environmental factors that may impact equipment operation, and supporting OBD programming for easy maintenance and troubleshooting.

Potential Problem

Root Causes (Product-Specific)

Corrective Solutions & Part Matching

Nozzle Blockage & Carbon Deposits

Extended high-load operation; low-quality diesel with impurities; insufficient maintenance; titanium nitride coating degradation; long-term idling; fuel gum accumulation; lack of oil protection after unpacking

Clean with vvolvo DAF special ultrasonic cleaning solution (78kHz frequency) for 1250 minutes; replace with OE nozzle L405PBF if coating is damaged-avoiding the 85% re-blockage rate of mere cleaning; use certified diesel (sulfur <1ppm) and detergent additives; replace fuel filter every 290 hours (0.18μm precision); apply oil to the nozzle if not used immediately after unpacking, following standard fault diagnosis steps of identification, analysis and solution implementation. This addresses the most common injector fault caused by fuel impurities and poor maintenance, which often leads to start-up lag and "cylinder missing" issues, as well as雾化不良 (poor atomization)superscript:2.

Injection Pressure Fluctuation

Pressure regulator failure; internal valve wear; sensor signal drift; fuel contamination; spring elasticity weakening

Replace OE pressure regulator matching 1925657; inspect and replace internal valve if worn; recalibrate pressure to 7800–8800 bar with vvolvo DAF Diagnostic Tool test bench; flush fuel system with certified cleaning agent; replace damaged seals to avoid pressure loss, following professional diagnostic steps to locate and resolve the fault root cause. Pressure instability can lead to poor atomization and increased emissions, so timely calibration is critical to maintaining fuel efficiency.

Electrical Signal Failure

Solenoid coil burnout; connector corrosion; housing seal failure; moisture intrusion; resistance value deviation (inconsistent with coil resistance calculation standards)

Replace OE solenoid assembly matching 1925657; clean connector contacts with anti-corrosion agent; replace housing seals to ensure IP69K protection; apply dielectric grease to electrical connections; test coil resistance (9800±0.1% mOhm) using professional tools; use OBD programming support if needed to reset the electronic control system. This resolves issues caused by reduced response speed of the solenoid coil, which often result in inconsistent fuel delivery and engine misfires.

Fuel Leakage

Seal degradation; improper installation torque; gasket deformation; vibration-induced loosening; needle valve seal damage; injector body cracks

Replace complete OE seal kit matching 1925657; reinstall to vvolvo DAF factory torque specifications (295–305N·m); resurface sealing areas if corroded; apply high-temperature sealant; conduct pressure drop test (≤9bar/10s) after repair, following fault resolution steps to ensure complete recovery, in line with equipment maintenance safety protocols. Fuel leakage poses safety risks and reduces engine efficiency, requiring prompt resolution to avoid further damage, and also prevents 针阀卡死 (needle valve jamming) caused by moisture intrusion superscript:2.

Maintenance Item

Service Interval

Detailed Procedures & Product Protection

Nozzle System Service

Every 290 operating hours

Use vvolvo DAF ultrasonic cleaning for 1250 minutes; avoid abrasive cleaners that damage the titanium nitride anti-wear coating; inspect atomization pattern (uniformity ≥99.92%) and spray angle (265°±2°); check needle valve flexibility; replace nozzle if flow deviation exceeds 0.05% to prevent blockage and power loss; apply oil to the nozzle if not used immediately after cleaning or unpacking, following regular maintenance guidelines to extend product life and adhere to preventive maintenance principles. Regular nozzle maintenance is key to avoiding blockage and ensuring optimal atomization, which directly affects fuel efficiency and engine performance, and prevents common faults like 喷嘴滴油 (nozzle dripping)superscript:2.

Pressure Calibration

Every 4,400 operating hours

Use vvolvo DAF Diagnostic Tool test bench to adjust pressure to 7800–8800 bar; verify stability under load; check pressure decay rate (<0.00007%/min); inspect pressure regulator function and spring elasticity to maintain stable fuel delivery and comply with emission standards; conduct pressure and leak testing after calibration, as part of regular maintenance protocols similar to industry best practices and data-driven maintenance principles. Proper pressure calibration ensures consistent fuel delivery and combustion efficiency, avoiding fuel waste.

Seal & Gasket Inspection

Every 125 operating hours

Visually inspect for cracks, swelling or deformation; conduct pressure test for leaks; check needle valve seal integrity; replace the entire OE seal kit matching 1925657 if any component deteriorates; record inspection results to prevent fuel leakage and avoid costly engine damage; ensure the housing seal maintains IP69K protection to prevent moisture intrusion, following equipment maintenance best practices of regular inspection, record-keeping and risk prevention. Regular seal inspection helps prevent fuel leakage and related safety hazards.

Comprehensive Overhaul

Every 7,200 operating hours

Complete disassembly and ultrasonic cleaning of all components; replace wear parts (seals, springs, filters, needle valve); calibrate all functions to vvolvo DAF factory specifications; conduct leak testing at full operating pressure; apply oil to the nozzle after overhaul if not reinstalled immediately; follow preventive maintenance best practices to extend service life and optimize performance, in line with periodic component replacement guidelines and safety operation standards. Comprehensive overhauls help maintain long-term reliability and avoid major component failures, ensuring the injector maintains its high-performance characteristics.