Cummins 24V 55A alternator (charging generator) 4094998 Series is the engine charging component for Cummins K19, K38, K50, NT855, 6BT diesel engines. It supplies power to the electrical system and charges the battery during engine operation, widely used for generator sets, mining machinery, marine engines and construction equipment.

Part numbers in this series:
4094998, 3634778, 3251135, 3631678

Fits: Cummins K19, K38, K50, NT855, 6BT Diesel Engine
Position: Engine charging system

What you are ordering
Price is per alternator assembly. All part numbers are separate variants, please select the correct PN from variant options. These alternators are not interchangeable. Different part numbers differ in pulley, mounting bracket and wiring terminal. Wrong selection will lead to insufficient charging, battery overcharge and electrical component damage.

Specifications
Type: Alternator / Charging Generator
Voltage: 24V
Current: 55A
Feature: Brush type, stable output, high temperature resistance
Package: Neutral packing or wooden case

When to replace
Replace the alternator when battery not charging, dashboard charging alarm, low voltage, abnormal squealing noise or internal winding burnout.

Fitting notes
Strictly confirm part number, mounting dimension and terminal type before ordering. Check belt tension and wiring harness insulation after installation. Follow Cummins service manual for wiring and test. If you are not sure which alternator matches your engine, send us engine serial number for confirmation.

Warranty and shipping
Covered by a 12-month warranty against manufacturing defects. Orders are dispatched within 3–7 business days; DHL / FedEx delivery takes 5–10 business days. Tracking number is sent as soon as the parcel leaves our warehouse.

Note: manufacturer names and part numbers are used for identification and cross-referencing only. We are an independent aftermarket supplier and are not affiliated with, or authorised by, the original manufacturer. Please verify the part number against your engine's parts catalogue before ordering — our team is happy to help if you send us your engine model or serial number.