Bosch 0402896301 Fuel Injection Pump Unit

Module Feature

0402896301 is a Bosch mechanical inline diesel fuel injection pump, compatible with Cummins engine, cross reference OEM number 3023273 / 3093277 / 3094654.

It adopts classic plunger barrel fuel metering structure with mechanical speed governor. It can accurately adjust fuel delivery volume according to engine load and rotation speed, control injection timing and injection pressure. It is widely applied on stationary power units, construction machinery and heavy-duty diesel engines. This is a mature engine core spare for field overhaul replacement.

Working principle

Engine camshaft drives the plunger inside pump body to reciprocate. High pressure diesel oil is delivered to each injector in sequence. The governor adjusts fuel rack position automatically to stabilize engine speed under varying load. When fuel supply is cut off, engine stops running.

Onboard components

Pump housing, plunger and barrel assembly, delivery valve, camshaft, mechanical governor, fuel feed pump, timing adjustment mechanism, fuel inlet and outlet port.

LED indicators

No built-in LED indicator. Running status and fault are judged by engine speed, smoke emission and power output.

Hardware self‑diagnosis

No electronic self-diagnosis function. Inspection relies on fuel pressure test, injection timing test and bench calibration.

Programming software

No supporting configuration software. Calibration needs professional fuel injection pump test bench.

Electrical & Process Parameters

Model:0402896301 Brand:Bosch Device type:Mechanical inline diesel injection pump Applicable engine:Cummins diesel engine Function:Quantitative high-pressure fuel injection for diesel combustion

Mechanical & Structure

Mounting:Engine block fixed mounting Protection class:IP20 (outer surface) Housing:Cast alloy pump body

Environmental

Operating temperature:-20℃ ~ +85℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing Certification:CE Status:Bosch original engine spare

Installation

Confirm engine model and pump version before installation. Strictly set injection timing during mounting, connect fuel pipeline without air leakage, complete air bleeding before startup. Perform bench test after overhaul.

Interface

Fuel inlet port, fuel return port, high-pressure fuel outlet to injectors, governor control lever.

Diagnostic

Engine power insufficient: Plunger wear, fuel supply drop. Black smoke: Injection timing advance too large or nozzle fault. Unstable idle speed: Governor wear or rack jamming. Fuel leakage: Seal aging, thread loose.

Product BriefBosch 0402896301 mechanical inline diesel injection pump, Cummins engine compatible fuel pump spare for heavy equipment maintenance.