Description

Fit Cummins Komatsu Turbocharger HX40W – 4089919 / 4039140 / 4046100 / 4039139 / 4089919RX The HX40W turbocharger is a premium replacement designed for Cummins and Komatsu diesel engines . Compatible with part numbers 4089919, 4039140, 4046100, 4039139, and 4089919RX , this turbocharger provides reliable boost pressure, restores torque, and improves engine performance across a wide range of applications. Built with precision-balanced compressor and turbine assemblies, durable bearings, and high-quality housings, this HX40W turbo is engineered for long-term reliability under heavy-duty conditions. Ideal for fleet vehicles, construction machinery, industrial equipment, and engine rebuilds , it provides a direct-fit replacement that meets or exceeds OEM specifications. Whether used in medium-duty trucks, Komatsu excavators, or industrial machinery, this turbocharger ensures optimal diesel engine performance, improving throttle response, fuel efficiency, and reliability. PRODUCT FEATURES & COMPONENTS Genuine HX40W replacement turbocharger Precision-balanced turbine and compressor wheels High-durability bearings and seals Robust turbine housing for heavy-duty operation OEM-equivalent performance for Cummins and Komatsu engines Tested for boost pressure, torque, and reliability ENGINE COMPATIBILITY ✔ Cummins diesel engines ✔ Komatsu industrial and construction engines Reference / OEM Part Numbers: 4089919 4039140 4046100 4039139 4089919RX Always verify engine and turbo part numbers before ordering. VEHICLE & EQUIPMENT APPLICATIONS Medium-duty trucks with Cummins engines Komatsu construction equipment and excavators Industrial diesel machinery Fleet and commercial vehicles (Fitment may vary depending on engine year and configuration.) KEY FEATURES & BENEFITS ✔ OEM-equivalent quality for Cummins and Komatsu engines ✔ Restores factory boost and torque ✔ Improves throttle response and engine efficiency ✔ Heavy-duty construction for long service life ✔ Direct-fit replacement for worn or failed turbos ✔ Ideal for fleet maintenance or engine rebuild projects Frequently Asked Questions Which engines does the HX40W turbo fit? This turbo fits Cummins diesel engines and Komatsu industrial engines using HX40W turbo part numbers 4089919, 4039140, 4046100, 4039139, and 4089919RX. Is this a replacement or OEM turbocharger? This is a high-quality replacement turbocharger engineered to meet or exceed OEM specifications. Will this turbo improve engine performance? Yes, it restores factory boost, enhances torque, improves throttle response, and ensures reliable diesel engine operation. Is professional installation recommended? Professional installation is strongly recommended for proper fitment, calibration, and long-term performance. Can this turbo be used for heavy-duty or industrial applications? Yes, it is suitable for medium-duty trucks, Komatsu construction equipment, industrial diesel machinery, and fleet vehicles requiring HX40W turbo replacement.