Product Overview

This genuine Bosch-manufactured common rail fuel injector (Cummins PN 5263308 / Bosch PN 0445120236) is engineered for high-precision fuel delivery in Cummins QSC8.3 and QSL9 engines. Operating at extreme pressures, it provides ultra-fine fuel spray for complete combustion, reduced emissions, strong torque response, and optimal fuel economy in heavy-duty off-highway applications.

Volgen Power supplies authentic OEM injectors with full traceability, ensuring perfect calibration, nozzle durability, and reliable performance that matches factory specifications.

Performance Advantages

• Ultra-Precise Injection — Multiple injection events per cycle for smoother operation and lower NOx/soot emissions
• High-Pressure Capability — Supports up to 1800+ bar for excellent atomization and power output
• Robust Nozzle Design — Hardened components resist wear from poor fuel quality and extended duty cycles
• Quick Response — Fast-acting solenoid delivers responsive engine performance under varying loads
• OEM Reliability — Factory-tested for leak-free sealing and consistent spray patterns

Equipment & Engine Compatibility

Direct fit for Komatsu excavators:

• PC300-8
• PC350-8
• PC360-8 (with SAA6D114E engine)

Compatible Cummins engines:

• QSC8.3 (industrial/construction ratings)
• QSL9 (Tier 3/4 interim configurations)
• Related ISL8.9 variants

Also used in various loaders, generators, and marine applications.

Technical Data

Volgen Power stocks this critical injector for immediate worldwide dispatch, backed by expert support.

Boost your engine’s efficiency and power today – contact us for pricing, stock confirmation, or bulk orders. Request your quote now!