Cummins original 4088426 High Performance Fuel Injector for QSK60 QSK23 QSK19 Diesel Engines, Replacement for OEM 4928348, 4088427, 4902827, Suitable for Truck Tractor Excavator original new injector

Accurate injector identification starts with the part number and ends with engine-specific verification. The Cummins 4088426 is a heavy-duty diesel fuel injector reference for large-displacement industrial engine applications, presented here for QSK23 sourcing. It consolidates the principal searchable cross references—4010158, 4087892 and 4326779—along with related NX, PX and RX reman suffix listings, giving purchasers a practical starting point for identifying a replacement common rail injector.

The associated QSK23 platform is a 23 L inline six-cylinder, four-cycle diesel engine with 170 mm * 170 mm bore and stroke and turbocharged, charge-air-cooled aspiration. Cummins connects this platform with oil and gas, mining, and commercial or industrial generator-set applications. Published ratings vary by configuration: approximately 760–950 hp for oil and gas and 760–1050 hp for mining. These details help buyers assess the application environment, while the injector’s cross-reference coverage simplifies initial part-number research.

Fitment nevertheless requires care. Some public listings associate 4088426 with QSK23, QSK45 and QSK60, whereas others emphasize QSK45 and QSK60 only; it should therefore not be ordered on an unconditional QSK23 fitment assumption. Before shipment, buyers should provide the engine serial number, CPL, old injector number, injector photo and equipment model. Condition must be confirmed against actual stock. Additional QSK-series numbers appearing in market searches should be treated as search-related references, not guaranteed direct replacements, unless verified through the same engine-specific checks.