The Cummins ISC 8.3L diesel engine (using fuel injector 445120272 or its equivalents) was widely used in medium-duty and heavy-duty applications across multiple industries. Here are some of the most common machines and vehicles equipped with this engine and injector:
1. On-Highway Trucks & Buses
Freightliner Business Class M2 (2000s models)
International 4000 Series (Early 2000s models)
Thomas Built Buses (Saf-T-Liner HDX, FS-65, etc.)
Blue Bird Vision & All American FE (School buses)
Gillig Low Floor & Phantom Buses
Peterbilt 330 & Kenworth T300 (Medium-duty trucks)
2. Vocational & Off-Highway Equipment
Construction Equipment:
Fire & Emergency Vehicles:
Refuse & Utility Trucks:
3. Industrial & Agricultural Applications
Generator Sets (200-300 kW range)
Agricultural Machinery (Older combines, tractors with Cummins swaps)
Marine Auxiliary Engines (Some repowered boats)
The Cummins ISC 8.3L fuel injector (Part #445120272 or equivalent) is a critical component in ensuring optimal engine performance, fuel efficiency, and emissions control. Below are its key characteristics and advantages:
1. Key Characteristics
✅ Precision Engineering – Uses Bosch-style unit injector technology, delivering high-pressure fuel directly into the combustion chamber for efficient atomization.
✅ High-Pressure Performance – Operates at up to ~23,000 PSI (1,600 bar), ensuring complete fuel burn and reduced soot.
✅ Durable Construction – Made from hardened steel and precision-machined components to withstand high temperatures and pressures.
✅ Electronic Control Compatibility – Works with Cummins’ ECM (Electronic Control Module) for precise timing and fuel metering.
✅ Self-Lubricating Design – Minimizes wear over long service intervals.
2. Advantages of This Injector
✔ Improved Fuel Efficiency
Optimized spray pattern ensures complete combustion, reducing wasted fuel.
Helps maintain optimal fuel economy in heavy-duty applications.
✔ Enhanced Engine Performance
Delivers consistent fuel flow, preventing power loss or misfires.
Supports smooth idle and strong acceleration in trucks and buses.
✔ Lower Emissions Compliance
✔ Long Service Life
Robust design resists carbon buildup and coking.
Proper maintenance can last 300,000+ miles before needing replacement.
✔ Cost-Effective Maintenance
Remanufactured options are widely available, saving money vs. new OEM.
Core exchange programs reduce upfront costs.
OEM Cross Reference:
0-445-120-035, 0-445-120-112, 0-445-120-272, 0-986-435-532, 0-986-435-532R, 0-986-435-532RX, 0445120035, 0445120112, 0445120272, 0986435532, 0986435532R, 0986435532RX, 199211D, 209995, 209995X, 241-130-0010, 2411300010, 365720, 3965720, 3973059, 3973059NX, 445120272, 4940439, 4940439NX, 4940439RX, 5263305, 5263305NX, 5263305PX, 5263305RX, 6745113102, 6745123100, 83-02325-070, 8302325070, 84-01379-070, 8401379070, 87581565, 87581565R, 96-01379-070, 9601379070, 986435532, RBE0445120112
