Cummins Injector QSL Series (Part Number: 5491659) Product Details

The Cummins 5491659 fuel injector is a premium OEM-grade common rail component specifically engineered for Cummins QSL series diesel engines, with exceptional compatibility for QSL9.3, ISL8.9, QSC8.3, and ISLE engine models widely used in heavy construction machinery, industrial power generation units, commercial heavy-duty trucks, agricultural machinery, and mining equipment. As a critical core part of the engine fuel supply system, it integrates advanced electromagnetic control technology and micron-level precision CNC machining processes[superscript:6], featuring ultra-fine fuel atomization, outstanding high-pressure resistance (up to 3200 bar), superior wear resistance, and reliable sealing performance. Crafted from high-strength heat-resistant alloy material that adheres to Cummins global manufacturing standards[superscript:1], the injector undergoes strict surface hardening treatment and full-process quality inspection, enabling it to adapt to harsh operating environments such as high temperature, heavy load, dusty and humid conditions. Its integrated plug-and-play design ensures seamless compatibility with the original engine interface, eliminating the need for pipeline or wiring modific-ations, which greatly reduces maintenance time and labor costs. Each 5491659 injector is 100% brand-new and non-remanufactured, passing rigorous pre-delivery performance and durability tests, and is equipped with verified OEM Cross-Reference Numbers to ensure wide interchangeability. Backed by factory-direct supply, flexible MOQ, global fast delivery, and a 12-month quality warranty[superscript:1], it provides cost-effective and reliable support for the efficient, stable, and low-emission operation of QSL-powered equipment, perfectly meeting the high-demand requirements of non-road and commercial applic-ations[superscript:2].

1. Core Technical Specific-ations (5491659)

2. Compatible Equipment & Applic-ation Advantages

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