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Komatsu Turbo Assembly 2013-2018: OEM 6503-25-5010

KOMATSU TURBO ASSEMBLY 2013-2018: OEM 6503-25-5010

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$8,850.00

CORE CHARGE:

$1,000.00
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 NUMBER6503-25-5010
PART TYPETurbo Assembly
BRANDTamerx Diesel Products
ENGINE MAKEKomatsu
ENGINE TYPE
YEAR2013-2018
PART NUMBER6503-25-5010RM

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Turbo Assembly, Tamerx part number 6503-25-5010RM ( OEM Part Number 6503-25-5010 ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a Komatsu , production years 2013-2018, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM6503-25-5010
Additional OEM6503-25-5010

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490553842
WEIGHT92.00 LBS

SHIPPING OPTIONS

Ship Weight : 92.00 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.


Designed for reliable turbocharger operation, the Komatsu Turbo Assembly (2013–2018) OEM 6503-25-5010 is a critical component for maintaining proper engine airflow and combustion function. Manufactured to meet original equipment specifications, it ensures precise fitment with compatible Komatsu engines within the specified model years. This turbo assembly regulates air intake and exhaust flow, supporting consistent engine response under varying operating conditions. Constructed from durable, high-quality materials, it is built to withstand high temperatures and demanding equipment applications. Ideal for technicians and heavy equipment maintenance professionals, this OEM turbo assembly supports dependable operation and long-term system durability.

FITMENT CHART

YEARMAKEENGINE(S)
2013Komatsu
2014Komatsu
2015Komatsu
2016Komatsu
2017Komatsu
2018Komatsu

PEOPLE ALSO ASKS | BLOG(S)

When it comes to replacing a turbocharger like the Komatsu Turbo Assembly (OEM 6503-25-5010), confirming compatibility with your engine is a crucial step. While this turbo is commonly associated with Komatsu equipment from 2013–2018, not every engine within that range will use the same configuration.

Turbo assemblies are engineered for very specific applications, meaning even small differences in engine setup can affect whether a part will fit and function correctly.

To make sure this turbo is the right match, here are the key things to check:

  • Identify your exact engine model
    • Komatsu uses a variety of engines across different machines. Make sure your engine matches the specific model this turbo was designed for, not just the brand or year.
  • Use your engine serial number (ESN)
    • The ESN provides precise details about your engine’s build. It’s the most reliable way to confirm whether OEM 6503-25-5010 is compatible.
  • Compare the existing turbo’s part number
    • If you can access your current unit, check for a matching part number. A direct match confirms correct fitment.
  • Verify the equipment application
    • The same engine family may be used in different machines, but with different turbo setups. Confirm your specific equipment type.
  • Consult a trusted supplier or dealer
    • Providing your engine details allows for accurate cross-referencing and helps avoid ordering the wrong part.

Taking the time to verify these details ensures proper installation, avoids unnecessary delays, and helps keep your equipment operating as intended.

A turbo assembly operates under extreme heat and pressure, making proper care essential for long-term reliability. While wear is inevitable over time, consistent maintenance and good driving habits can help reduce stress on the system.

The key to extending its lifespan is keeping both the engine and turbo operating under clean and stable conditions. Small issues left unaddressed can quickly lead to larger problems.

Here are practical ways to help your turbo assembly last longer:

  • Allow proper warm-up and cool-down time
    • Let the engine reach operating temperature before heavy use, and allow it to idle briefly before shutting off. This helps prevent thermal stress and protects internal components.
  • Use clean, high-quality engine oil
    • The turbo relies on proper lubrication. Regular oil changes with the correct oil type help reduce wear and prevent buildup inside the system.
  • Avoid aggressive driving when the engine is cold
    • Pushing the engine too soon can strain the turbo before it’s properly lubricated, increasing the risk of damage.
  • Keep the air intake system clean
    • A clean air filter prevents debris from entering the turbo, reducing the chance of internal damage.
  • Address engine issues early
    • Problems like poor combustion or exhaust restrictions can increase strain on the turbo and accelerate wear.
  • Monitor for early warning signs
    • Unusual noises, smoke, or reduced responsiveness should be checked promptly to prevent further damage.

By maintaining proper operating conditions and staying proactive with maintenance, you can help extend the life of your turbo assembly and keep it functioning reliably.

The assembly typically includes the turbine wheel, compressor wheel, center housing rotating assembly (CHRA), and housings, all working together to manage airflow and exhaust gas energy.

It is commonly used in Komatsu construction equipment, generators, and industrial machinery that require reliable airflow management under continuous heavy-duty operation.

Common indicators include loss of air pressure delivery, excessive exhaust smoke, unusual noises from the turbo, or oil leakage around the housing.

By compressing intake air, it ensures the engine receives the proper air supply needed for efficient combustion, especially under load conditions typical of heavy equipment use.

Komatsu Turbo Assemblys