CUMMINS 4089859RX Cummings

( Brand: Cummins ), ( Manufacturer Part Number: 4089859RX ), ( Type: Turbocharger ), ( Oe/oem Part Number: Hx55. ), ( Vintage Part: No )

Review CUMMINS New Cummings fits TURBO

The Cummins 4089859RX Turbo is a high-performance turbocharger specifically designed for use with Cummins engines. This turbocharger is part of Cummins' aftermarket performance product line, offering enhanced power and torque for diesel engines.

The RX series turbocharger is known for its advanced technology and robust design, making it a popular choice among diesel enthusiasts and commercial vehicle operators. The compressor on this unit is a ball-bearing design, which provides increased efficiency and durability compared to older journal-bearing designs. The turbine is a high-strength steel construction, ensuring long-lasting performance even under heavy loads.

The Cummins 4089859RX Turbo comes with a wastegate, which helps manage boost pressure and prevent excessive turbocharger speed during light-load conditions. This feature is particularly useful for maintaining optimal engine performance and reducing the risk of damage to the turbocharger.

The turbocharger housing is made of compacted graphite iron, providing excellent heat dissipation and resistance to thermal shock. The turbine inlet and compressor outlet are both equipped with high-flow, water-cooled air-to-air intercoolers, ensuring efficient cooling of the intake air and maximizing power output.

The Cummins 4089859RX Turbo is compatible with a wide range of Cummins engines, including those found in medium-duty trucks, buses, and industrial applications. Its versatile design allows for easy installation and integration into various engine configurations.

In summary, the Cummins 4089859RX Turbo is a high-performance, robust, and efficient turbocharger that delivers increased power and torque for Cummins engines. Its advanced technology, including a ball-bearing compressor, high-strength turbine, and water-cooled intercoolers, ensures optimal engine performance and durability under heavy loads.

Cummins 4089859RX, also known as the Cummins Turbo Sequential Unit (TSU), is a popular aftermarket upgrade for diesel engines, particularly those used in heavy-duty applications. Here are some pros and cons to consider before making a purchase:

1. Increased Power: The Cummins TSU provides a significant boost in horsepower and torque, improving overall engine performance. This can lead to better towing capacity and faster acceleration.

2. Improved Fuel Efficiency: With the increased power comes improved fuel efficiency. The TSU optimizes fuel delivery and combustion, reducing the amount of fuel needed to produce the same level of power.

3. Enhanced Durability: The Cummins TSU is designed to withstand the rigors of heavy-duty use. It is built with high-quality materials and features robust construction, making it a reliable and long-lasting upgrade.

4. Better Emissions Compliance: The TSU comes with advanced emissions control technology, helping to reduce harmful exhaust emissions and ensure compliance with emissions regulations.

1. Cost: The Cummins TSU is a significant investment. The cost of the unit itself, as well as the installation, can add up quickly.

2. Complexity: The installation of the Cummins TSU is not a simple task. It requires specialized knowledge and equipment, making it a job best left to professionals.

3. Potential for Increased Wear and Tear: The increased power and torque produced by the TSU can put additional stress on other engine components. Regular maintenance and upkeep are essential to ensure the longevity of these components.

4. Potential for Engine Damage: Improper installation or use of the Cummins TSU can lead to engine damage. It is crucial to follow the manufacturer's instructions carefully and work with experienced professionals to ensure proper installation and operation.

The Cummins 4089859RX TSU is an excellent upgrade for heavy-duty diesel engines, providing increased power, improved fuel efficiency, enhanced durability, and better emissions compliance. However, it comes with a significant cost and the complexity of installation. Proper installation, regular maintenance, and careful use are essential to ensure the longevity and reliability of the upgrade.

If you operate a heavy-duty vehicle or require significant towing capacity, the Cummins TSU can be an excellent investment. Ensure that you work with experienced professionals for installation and maintenance to ensure the unit operates safely and efficiently. Additionally, be prepared for the financial investment required and the potential for increased wear and tear on other engine components.

Details:

The Brand New Cummings Turbo is a high-quality Turbocharger designed by Cummins, known for its durability and reliability. It is not a vintage part, ensuring compatibility and performance with modern vehicles. This specific Turbocharger has an OE/OEM Part Number of hx55 and a Manufacturer 4089859RX.

part #: 4089859rx prices

• $74.99-$1000.00

specifications turbiparts:

• for models: Turbo
• brand: Cummins
• mpn: 4089859rx
• type: Turbocharger
• oe/oem part number: Hx55.
• vintage part: No

returns turbiparts:

• policy: No Returns

shipping turbiparts:

• transit: 4-7 Days
• class: Standard
• cost: $28.72
• type: Calculated
• service: UPS Ground
• carrier: UPS

offer turbiparts:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0
• started: August 21, 2025

payments turbiparts:

• wallet: Paypal
• other
• credit card: Visa

seller turbiparts:

• city: Belleville, Michigan
• # reviews: 2
• rating: 100.0%

general turbiparts:

• condition: New
• Air Fuel Delivery > Turbos, Superchargers Intercoolers > Turbos Parts

Cummins 4089859RX Is Similar To:

• Cummins 5603777rx Turbo Actuator (45.9% similar) 5603777RX Cummins turbo actuator new remain, original box...(May 15th, 2024)
• Holset He351ve 2007 2012 Dodge Ram 2500 3500 Turbo 6.7l Cummins 2008 2009 2010 2011 (20.5% similar) If interested in buying bulk let me know. Good used turbo, multiple available so photos may be examples...(May 18th, 2024)
• Holset 3770742 4039813 Turbo Boost Pressure Air Valve Fits Cummins Isx Ism Used (19.8% similar) Cummins halest turbo boost air pressure valve 4039813 used...(May 23rd, 2024)
• Cummins 3923178 Hx35 Turbo Compressor Elbow And Clamp 1994-2002 Dodge Ram Diesel 5.9l (26.8% similar) The manufacturer part numbers for this product are 3923178 and 3923060. The package includes clamps for easy installation. The elbow is made of aluminum and comes with...(May 27th, 2024)
• Buyautoparts 40-30146r For Dodge Ram Cummins 6.7 Diesel 2007-2012 Turbo Turbocharger Gap (26.2% similar) Built for trouble-free ownership and 100% visually inspected quality tested, this turbocharger is backed by our satisfaction guarantee. This high quality remanufactured original equipment Holst/cummins HE351VE variable geometry turbocharger is a guaranteed exact fit replacement for the that...(May 29th, 2024)
• Holset 2843481 Sf23k 26 Turbo Cummins Isx 15 2643581 Used (26.3% similar) Comes as shown in the photos. Worked when pulled from truck. Any questions just message. Truck was totaled. Turbo Holst Cummins six 15 SF23K 26 2643581 used...(May 29th, 2024)
• Cummins 3934311 Dodge Diesel Turbo Charger Oil Drain Tube 5.9l 24v Return 3934331 (30.9% similar) Dodge Cummins turbo drain tube. Ref: 035 - A6. It is in good shape...(May 31st, 2024)
• Holset 3596191 Turbo Hy35w 2000-05 Dodge Cummins 5.9l For Parts Or Rebuild Only (28.1% similar) Holst HY35W 2000 -05 dodge Cummins 5.9L turbo 3596191 - for parts or rebuild oe take off turbo selling for parts rebuild. Cross reference: 4036239. 3592811, 3596183, 3596392, 3596393H. 3800973, 4025257, 4089642, 3592836, 3596191, 3596192, 3596193...(June 2nd, 2024)
• Buyautoparts 40-30058r For Dodge Ram Cummins 5.9l Diesel 1999-2002 Manual Trans Turbo Turbocharger Dac (29.2% similar) Features: engineered for superior durability, backed by a one year, unlimited-mileage warranty fully remanufactured and tested oem / OSes unit - fits like oem, performs new. Carb-approved and 50-STATE legal. For dodge ram Cummins 5.9L 24V manual 1999 -02 turbo turbocharger ADC. Built for trouble...(June 7th, 2024)
• Buyautoparts 40-31978r For Cummins Engines All Models 2005 2006 2007 2008 2009 Turbo Turbocharger Csw (23.8% similar) Technical specifications: part type:turbocharger. Premium parts: all parts are premium ISO/ts 16949 quality. Tested and approved: each part is run through rigorous testing before it leaves the factory. Condition: refurbished. This turbocharger is manufactured and tested to the strictest...(June 8th, 2024)
• Holset 3927811 Dodge Ram 5.9 Cummins Diesel Hx35 Turbo Charger Wastegate Elbow Flange (25.2% similar) Dodge ram 5.9 Cummins diesel HX35 turbo charger Holst waste gate elbow flange removed from A3500. It is in good shape. Ref: 87 - A8...(June 8th, 2024)