Cummins 5305254 Doser Injector | B6.7 4B 3.9L 6B DEF Injector

The Cummins 5305254 Doser Injector is a precision-engineered Diesel Exhaust Fluid (DEF) injector designed for Cummins B6.7, 4B, 3.9L, and 6B engines. It is an essential component of the SCR (Selective Catalytic Reduction) aftertreatment system, ensuring accurate dosing of DEF into the exhaust stream to reduce NOx emissions and maintain emissions compliance.

Manufactured to OEM specifications, this injector provides consistent performance, durability, and reliability across industrial, on-highway, and performance applications. Its robust design withstands high temperature, pressure, and prolonged operational cycles, minimizing engine fault codes and system downtime.

The Cummins 5305254 Doser Injector is suitable for use in trucks, construction equipment, and other applications where Cummins engines require precise urea dosing. It ensures optimal SCR performance, improves combustion efficiency, and helps maintain engine longevity. This injector is a direct-fit replacement, making it ideal for OEM repairs, industrial maintenance, or performance-oriented upgrades.

Key benefits of the Cummins 5305254 Doser Injector include enhanced emission control, precise DEF delivery, OEM-level reliability, and compatibility with a wide range of Cummins engines.

✔ PRODUCT FEATURES & COMPONENTS

• OEM-quality DEF doser injector for Cummins B6.7, 4B, 3.9L, and 6B engines

• Precise Diesel Exhaust Fluid (DEF) injection for SCR systems

• Manufactured to OEM specifications for durability and consistent performance

• Direct-fit replacement for easy installation without modifications

• Resistant to high heat, pressure, vibration, and thermal cycling

• Prevents DEF crystallization and ensures proper atomization

• Supports both industrial and on-highway applications

• Minimizes engine fault codes and system derates

• Ensures consistent urea dosing to maintain SCR efficiency

• Ideal for maintenance, rebuilds, or performance-oriented upgrades

✅ ENGINE COMPATIBILITY

• Cummins B6.7

• Cummins 4B

• Cummins 3.9L

• Cummins 6B

✅ VEHICLE APPLICATIONS

• Cummins-powered trucks and heavy-duty vehicles

• Construction machinery and industrial equipment

• On-highway commercial vehicles

• Buses and fleet vehicles requiring SCR aftertreatment compliance

• Vehicles with high-performance or high-mileage Cummins engines

✅ KEY FEATURES & BENEFITS

• Precise Urea Dosing: Ensures accurate DEF injection for SCR system efficiency

• OEM-Level Reliability: Manufactured to Cummins specifications for consistent performance

• Emission Control: Reduces NOx emissions to meet environmental standards

• Durable Construction: Withstands high temperatures, pressure, and vibration

• Direct-Fit Replacement: Easy installation without modifications

• Performance Ready: Suitable for standard, high-mileage, and high-performance engines

• Prevents Engine Faults: Minimizes SCR system derates and fault codes

• Supports Fleet & Industrial Use: Reliable operation in demanding environments

• Maintains Engine Efficiency: Optimizes combustion and reduces emissions

• Long-Term Durability: Reduces downtime and maintenance frequency