Fuel Injection Pump 4989266 / 5262703 for Cummins B4.5, B6.7, ISB6.7, IQSB4.5, QSB6.7

The Cummins Fuel Injection Pump 4989266 / 5262703 is a high-quality, OEM-standard pump designed to deliver precise fuel metering for Cummins B4.5, B6.7, ISB6.7, IQSB4.5, and QSB6.7 diesel engines. Accurate fuel delivery is critical to maintaining optimal engine performance, fuel efficiency, and emissions control.

Built with durable, heat- and pressure-resistant components, this pump is engineered for long-lasting operation in heavy-duty, industrial, and commercial applications. It provides consistent fuel flow and pressure, ensuring smooth engine operation, improved throttle response, and reduced exhaust smoke.

Ideal for replacing worn, faulty, or damaged fuel pumps, the 4989266 / 5262703 is a direct-fit OEM replacement that restores the engine’s original performance. It supports applications ranging from trucks and industrial machinery to generators and off-highway equipment, making it essential for fleet maintenance and engine rebuild projects.

✔ PRODUCT FEATURES & COMPONENTS

• OEM-quality Fuel Injection Pump 4989266 / 5262703

• Precision fuel metering for optimized combustion efficiency

• Durable construction resists high temperature, pressure, and vibration

• Direct-fit replacement for Cummins B4.5, B6.7, ISB6.7, IQSB4.5, QSB6.7 engines

• Reduces exhaust smoke and improves throttle response

• Suitable for heavy-duty trucks, industrial machinery, and generator sets

• Ensures reliable fuel delivery under all operating conditions

• Ideal for engine maintenance, rebuilds, and performance restoration

✅ ENGINE COMPATIBILITY

• Cummins B4.5

• Cummins B6.7

• Cummins ISB6.7

• Cummins IQSB4.5

• Cummins QSB6.7

✅ VEHICLE & EQUIPMENT APPLICATIONS

• Heavy-duty commercial trucks with Cummins engines

• Construction and industrial machinery

• Diesel-powered generator sets

• Fleet vehicles and off-highway equipment

• Engine rebuilds and maintenance requiring fuel pump replacement

✅ KEY FEATURES & BENEFITS

• Precise Fuel Delivery: Optimizes combustion, power output, and efficiency

• Enhanced Engine Performance: Improves throttle response and reduces engine smoke

• Durable OEM Construction: Designed for heavy-duty diesel applications

• Direct Replacement: Fits Cummins engines without modification

• Reliable Operation: Consistent fuel flow and pressure under demanding conditions

• Emission Reduction: Supports cleaner exhaust and lower NOx output

• Improved Fuel Efficiency: Maintains optimal fuel consumption and engine performance