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Caterpillar C7 Engine Control Module (ECM) 2004-2007

CATERPILLAR C7 ENGINE CONTROL MODULE (ECM) 2004-2007

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,150.00

CORE CHARGE:

$500.00
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 NUMBER
PART TYPEEngine Control Module (ECM)
BRANDTamerx Diesel Products
ENGINE MAKECaterpillar
ENGINE TYPEC7
YEAR2004-2007
PART NUMBERC7S120RM
APPLICATION NOTESESN# C7S
ADDITIONAL NOTESComplete engine serial number required for factory programing

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Engine Control Module (ECM), Tamerx part number C7S120RM. 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 Caterpillar C7, production years 2004-2007, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: Complete engine serial number required for factory programing

OEM NUMBERS

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode
WEIGHT6.00 LBS

SHIPPING OPTIONS

Ship Weight : 6.00 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 2004-2007 Caterpillar C7 engines, the Engine Control Module (ECM) ensures precise regulation of fuel delivery, emissions control, and overall engine working conditions. Built to OEM specifications, this module helps maintain smooth operation and system efficiency. Each unit undergoes thorough testing for durability and compatibility, meeting factory standards before installation. Whether replacing a faulty ECM or restoring your engine’s electronic control system, this module provides a reliable solution for maintaining optimal durability and long-term dependability.

FITMENT CHART

YEARMAKEENGINE(S)
2004Caterpillar C7
2005Caterpillar C7
2006Caterpillar C7
2007Caterpillar C7

PEOPLE ALSO ASKS | BLOG(S)

The Engine Control Module (ECM) is a vital component of any vehicle's engine management system. When it starts to fail, you’ll notice a range of issues that can affect your vehicle's overall functionality. Identifying these signs early can save you from costly repairs and keep your vehicle running smoothly.

One of the first signs of a failing ECM is the check engine light coming on unexpectedly. While this light can indicate various problems, a faulty ECM is one possibility.

Here are some other common symptoms:

  • Engine misfires or stalls
    • If your engine is misfiring or stalling, the ECM may be sending incorrect signals to the engine.
  • Difficulty starting the vehicle
    • A malfunctioning ECM can prevent the engine from starting, or it might cause the vehicle to start and then immediately shut down.
  • Poor fuel efficiency
    • When the ECM isn’t functioning correctly, it can cause the engine to run inefficiently, leading to higher fuel consumption.
  • Transmission issues
    • The ECM also controls the transmission, so erratic shifting or transmission failures could be linked to a faulty ECM.

If you notice these signs, it’s important to have your ECM checked by a professional technician to ensure your vehicle remains reliable on the road.

Regular maintenance of the electrical system, ensuring proper battery health, protecting the ECM from environmental factors, and addressing any wiring issues promptly can help prevent ECM failure. ​

The process involves disconnecting the battery, removing the faulty ECM, installing the new ECM, and programming it with the correct engine parameters using specialized diagnostic tools.

Signs that may indicate the need for a software update include engine performance issues, diagnostic trouble codes, or notifications from Caterpillar regarding available updates; a diagnostic scan can confirm this.​

If the ECM is not communicating with other modules, inspect the wiring and connectors for damage or corrosion, and verify the integrity of the data link; professional diagnostic tools may be required for thorough troubleshooting.

Caterpillar Engine Control Module (ECM)s