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Cummins/Onan B4.5 Generator Set

Cummins/Onan B4.5 generator set: . Specifications, engine details, filters, oil capacity and 4 document types.

4
Document types

How to read your Cummins/Onan serial & model number →

Specifications

Ratings spec sheet not in our library yet — see the documents below.

Filters & service parts

model family
ItemSpecCapacityPart #Interval
Air filter find
Fuel filter2000 hr find
Oil filter1000 hr find
Belt find
Coolant filter find
Oil250 hr

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.

Parts

11model family
Part #DescriptionQtySystem
B4.590-149 kW (120-200 hp)1Engine yemparts $35.81
B6.7116-209 kW (155-280 hp)1Engine yemparts $53.98
F3.855 kW (74 hp)1Engine yemparts $53.98
3379000Air For Your EngineService part / kit buy
3379001Fuels for Cummins EnginesService part / kit buy
3379009Operation - Cold WeatherService part / kit buy
3666017B Series Shop ManualService part / kit buy
3666087Troubleshooting and Repair Manual, B3.9 and B5.9 Series EnginesService part / kit buy
3666109Alternative Repair Manual, B and C Series EnginesService part / kit buy
3666132Coolant Requirements and MaintenanceService part / kit buy
3810340Cummins Engine Oil RecommendationsService part / kit buy

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Available documents

Engine specSpec sheetReferenceService manual