Aftermarket Bosch 0445120245 Common Rail Fuel Injector

Aftermarket Bosch 0445120245 Common Rail Fuel Injector

This fuel injector is manufactured to OEM specifications as a direct replacement part. Each unit undergoes quality testing for flow rate, pressure rating, and durability to ensure reliable field performance. Designed for professional mechanics and fleet operators who need parts that fit right the first time.

Replaces OEM Part Numbers

0445120245

Signs You Need a Replacement

If your equipment is showing any of these symptoms, the injectors & nozzle may be the cause:

• Rough idle or misfire — Uneven fuel delivery from a worn injector causes the engine to shake at idle. On engines, this is often accompanied by a knocking sound under load.
• Black or white exhaust smoke — Black smoke means excess fuel; white smoke indicates incomplete combustion. Both point to injector spray pattern degradation.
• Loss of engine power — A single failing injector reduces cylinder output. Multi-cylinder engines lose noticeable power when one injector flows less than the rest.
• Increased fuel consumption — Poor atomization means the engine burns more fuel to produce the same power. Monitor your fuel burn rate as an early warning sign.
• Hard starting or no start — If the injector doesn’t deliver fuel on cranking, the cylinder won’t fire. This is especially common in cold weather with worn nozzles.
• Fuel in engine oil (dilution) — Fuel leaking past the injector seat seal contaminates the crankcase oil. If the oil level rises or smells of diesel, inspect the injectors immediately.

Replace as a Set

Replace all injectors as a set whenever possible. On engines, mixing old and new injectors creates uneven fuel delivery — the new injectors compensate for the worn ones, shortening their life. When installing, use new copper sealing washers and torque to the specification in the service manual. After installation, run the engine at idle for 5 minutes to bleed air from the fuel system, then check for leaks at each injector connection before putting the machine under load.

Frequently Asked Questions

Does this replace OEM number 0445120245?
Yes. This is a direct aftermarket replacement for 0445120245. It matches the original dimensions, connector type, and operating specifications. No modifications to your vehicle or equipment are required.

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