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John Deere 4045 Turbo Assembly 2011-2022: OEM RM100381

JOHN DEERE 4045 TURBO ASSEMBLY 2011-2022: OEM RM100381

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,250.00

CORE CHARGE:

$275.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBERRM100381
PART TYPETurbo Assembly
BRANDBorg-Warner
ENGINE MAKEJohn Deere
ENGINE TYPE4045
YEAR2011-2022
PART NUMBER12639700168
APPLICATION NOTES640, 643, 644, 648, 748, 843
ADDITIONAL NOTESComplete With 24 Volt Actuator

PRODUCT DESCRIPTION

This is a Genuine New, Borg-Warner Turbo Assembly, Borg-Warner part number 12639700168 ( OEM Part Number RM100381 ).This part is primarily made for a John Deere 4045, production years 2011-2022, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: Complete With 24 Volt Actuator

OEM NUMBERS

Primary OEMRM100381
Additional OEMDZ114777 (DZ127151), RM100381

ADDITIONAL DETAILS

CONDITIONGenuine New
UPC / Barcode00840490556485
WEIGHT58.00 LBS

SHIPPING OPTIONS

Ship Weight : 58.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.

The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.

Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.

Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".

If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.

As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.

What is a Core Charge?

A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.

30 Day Core Charge Hold

You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.

The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.

The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.

All fluids must be drained.

If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.

Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.


Supporting dependable airflow management and efficient engine operation, the John Deere 4045 Turbo Assembly (2011–2022) OEM RM100381 is a critical component within the turbocharging system. Designed to meet original equipment specifications, it ensures precise compatibility with John Deere 4045 engines across the specified model years. This turbo assembly regulates the flow of intake air and exhaust gases, helping maintain efficient combustion and consistent engine response under a variety of operating conditions. Constructed from durable, high-quality materials, it is engineered to withstand high temperatures and demanding agricultural, construction, and industrial applications. Ideal for equipment owners, technicians, and maintenance professionals, this OEM turbo assembly helps maintain reliable engine function and long-term durability.

FITMENT CHART

YEARMAKEENGINE(S)
2011John Deere 4045
2012John Deere 4045
2013John Deere 4045
2014John Deere 4045
2015John Deere 4045
2016John Deere 4045
2017John Deere 4045
2018John Deere 4045
2019John Deere 4045
2020John Deere 4045
2021John Deere 4045
2022John Deere 4045

PEOPLE ALSO ASKS | BLOG(S)

The John Deere 4045 Turbo Assembly (OEM RM100381) is a vital engine component designed for 2011–2022 John Deere 4045 engines. It uses energy from the engine's exhaust gases to compress incoming air, ensuring the engine receives the airflow needed for efficient combustion and dependable operation. Turbochargers are commonly used across John Deere 4045 engine applications to improve airflow management and overall engine efficiency. 

Rather than allowing exhaust energy to go unused, the turbo assembly recycles it to improve the engine's air supply, making it an essential part of the intake and exhaust system.

What Does the John Deere RM100381 Turbo Assembly Do?

  • Converts exhaust energy into usable airflow
    • The turbo captures the energy from exhaust gases and uses it to spin an internal turbine that compresses fresh air entering the engine.
  • Supplies compressed air for combustion
    • By increasing the amount of oxygen available, the turbo helps create the proper conditions for efficient fuel combustion.
  • Adjusts to changing engine demands
    • The turbo responds automatically to changes in engine speed and workload, providing the airflow needed for different operating conditions.
  • Supports the engine's intake and exhaust systems
    • It serves as a link between the intake and exhaust sides of the engine, helping maintain balanced airflow.
  • Promotes efficient engine operation
    • Consistent airflow helps the engine maintain stable combustion and smooth performance during operation.
  • Works alongside engine management systems
    • The turbo operates in coordination with the engine's control systems to help regulate airflow and maintain proper operating conditions.

The John Deere RM100381 Turbo Assembly functions as the engine's airflow management system, transforming exhaust energy into compressed intake air. By ensuring a continuous supply of air for combustion, it supports reliable engine operation, efficient exhaust flow, and the overall performance of the John Deere 4045 engine.

A bad turbo assembly should be addressed as soon as possible to prevent further damage to your engine. Since the turbocharger is responsible for supplying compressed air to the engine, a failure can affect combustion, fuel efficiency, and overall drivability.

The first step is to determine what caused the failure. In many cases, turbo damage is the result of poor lubrication, contaminated oil, restricted airflow, or excessive heat rather than the turbo itself.

Here are the steps you should take:

  • Stop driving if the symptoms become severe
    • If you notice excessive exhaust smoke, loud grinding noises, significant power loss, or heavy oil leaks, avoid driving the vehicle. Continuing to operate it could cause additional engine damage.
  • Inspect the turbo for visible damage
    • Look for oil leaks, damaged compressor or turbine housings, loose connections, or broken hoses around the turbocharger.
  • Check the engine oil
    • Verify the oil level and condition. Low, dirty, or contaminated oil is one of the leading causes of premature turbo failure.
  • Inspect the air intake system
    • Check the air filter, intake tubing, intercooler pipes, and clamps for restrictions, cracks, or leaks that could affect turbo operation.
  • Run a diagnostic scan
    • Retrieve any fault codes related to boost pressure, airflow, or turbocharger operation to help identify the source of the problem.
  • Inspect related engine components
    • Examine the oil supply lines, return lines, intercooler, and charge air system. Problems with these components can contribute to turbo failure and should be corrected before installing a replacement.
  • Replace the turbo assembly if necessary
    • If the turbo has excessive shaft play, damaged turbine or compressor blades, seized bearings, or internal damage, replacement is typically the most reliable solution.

Addressing a failing turbo assembly early can help protect your engine, reduce repair costs, and prevent unexpected breakdowns. Before installing a new turbo, always correct the underlying cause of the failure to maximize the lifespan of the replacement unit.

The OEM RM100381 is a John Deere remanufactured turbocharger designed for select 4045 PowerTech 4.5L diesel engines used in agricultural, construction, industrial, and power generation applications. It is built using genuine John Deere components and remanufactured to OEM specifications.

The RM100381 is commonly used on John Deere-powered construction equipment, agricultural machinery, industrial machines, generators, and OEM power units equipped with compatible 4045 engines.

The turbocharger is lubricated by the engine's pressurized oil system, which supplies oil to the center housing to protect the shaft and bearings during operation.

Common indicators include reduced engine power, excessive exhaust smoke, unusual turbocharger noise, oil leakage around the turbo, or diagnostic fault codes related to boost pressure.

John Deere Turbo Assemblys