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Cummins ISX, ISM Engine Control Module (ECM) : OEM 3681405

CUMMINS ISX, ISM ENGINE CONTROL MODULE (ECM) : OEM 3681405

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,595.00

-
+

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 3681405
PART TYPE Engine Control Module (ECM)
BRAND Tamerx Diesel Products
ENGINE MAKE Cummins
ENGINE TYPE ISX, ISM
YEAR
PART NUMBER 3681405RM
APPLICATION NOTES CM570
ADDITIONAL NOTES ESN# or VIN# Required for Complete factory Programing

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Engine Control Module (ECM), Tamerx part number 3681405RM ( OEM Part Number 3681405 ). 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 Cummins ISX, ISM, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: ESN# or VIN# Required for Complete factory Programing

OEM NUMBERS

Primary OEM 3681405
Additional OEM 3681405

ADDITIONAL DETAILS

CONDITION Remanufactured
UPC / Barcode
WEIGHT 6.00 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 seamless integration with Cummins ISX and ISM engines, the Engine Control Module (ECM) OEM 3681405 ensures precise management of fuel delivery, emissions control, and system diagnostics. Built to OEM specifications, this module supports smooth engine operation and long-term reliability. Each unit undergoes extensive testing for compatibility and durability, meeting factory standards before installation. Whether replacing a malfunctioning ECM or restoring your engine’s electronic control system, this module provides a reliable solution for maintaining optimal working conditions and efficiency.

PEOPLE ALSO ASKS | BLOG(S)

The Engine Control Module (ECM) is the critical brain behind your Cummins ISX and ISM engines, controlling vital functions to ensure optimal performance and efficiency. The Cummins ISX, ISM Engine Control Module, OEM 3681405, is specifically designed to keep your engine running smoothly by managing everything from fuel injection timing to emissions controls. In this blog, we’ll explore the impact of a high-quality ECM on engine performance and why it’s essential to maintain this component.

Key Features and Benefits

Precision Engine Management

  • Controls fuel injection timing, air-fuel ratio, and other critical engine parameters, ensuring peak performance.
  • Helps maintain smooth engine operation under various load conditions, enhancing overall vehicle performance.

Improved Fuel Efficiency

  • Optimizes engine settings to maximize fuel economy, reducing fuel consumption and lowering operating costs.
  • Ensures that your engine runs at its most efficient, contributing to long-term savings on fuel expenses.

Real-Time Diagnostics

  • Continuously monitors engine performance, providing real-time data to detect and troubleshoot potential issues.
  • Helps prevent costly repairs by identifying problems early, ensuring long-term reliability and reduced downtime.

Durable and Reliable

  • Built to withstand the harsh conditions of heavy-duty engine operations, ensuring consistent performance over time.
  • Reduces the need for frequent replacements, offering a durable solution that keeps your engine running smoothly.

Perfect Compatibility

  • Specifically engineered for Cummins ISX and ISM engines, ensuring seamless integration and easy installation.
  • Guarantees a precise fit, restoring your engine’s performance to its original factory standards.

The Cummins ISX, ISM Engine Control Module (ECM): OEM 3681405 is a crucial component for maintaining and enhancing your engine’s performance and efficiency. With its ability to precisely manage engine functions, improve fuel efficiency, and provide real-time diagnostics, this ECM ensures that your Cummins ISX or ISM engine operates at its best. Investing in this OEM part will help keep your engine running reliably, delivering the power and efficiency you need for any demanding task.

The Engine Control Module (ECM) is a vital component of your vehicle’s engine management system, responsible for controlling various functions such as fuel injection, ignition timing, and emissions control. When the ECM fails, it can lead to a range of engine performance issues and even cause the vehicle to stop running altogether. Knowing how to fix an ECM can save you from costly repairs and get your vehicle back on the road. In this blog, we’ll explore the steps involved in diagnosing and fixing a faulty engine control module.

Steps to Fix an Engine Control Module

  • Diagnose the Problem
    •  Before attempting any repairs, it’s crucial to accurately diagnose the issue. Use an OBD-II scanner to read any diagnostic trouble codes (DTCs) stored in the ECM. These codes can help identify the specific problem, whether it’s a sensor failure, wiring issue, or the ECM itself.
  • Inspect for Physical Damage
    • After diagnosing, visually inspect the ECM for any obvious signs of physical damage, such as burnt circuits, corrosion, or loose connections. Physical damage to the ECM often indicates the need for replacement rather than repair.
  • Check Wiring and Connectors
    •  Sometimes, ECM issues are caused by faulty wiring or connectors rather than the module itself. Inspect the wiring harness and connectors for signs of wear, corrosion, or loose connections. Repair or replace any damaged components to restore proper communication between the ECM and the engine.
  • Reflash the ECM
    • If the ECM is still functional but is causing issues due to outdated or corrupt software, reflashing the ECM might be the solution. Reflashing involves updating the ECM’s software with the latest manufacturer-provided updates to resolve bugs and improve performance.
  • Replace Faulty Components
    •  In some cases, specific components within the ECM, such as capacitors or resistors, may fail. If you have the technical expertise, you can replace these components yourself. However, this process requires specialized tools and knowledge, and it’s often recommended to have a professional handle it.
  • Replace the ECM
    •  If the ECM is beyond repair, replacing it with a new or refurbished unit is the best course of action. After installation, the new ECM will need to be programmed to match your vehicle’s specific settings, including VIN, immobilizer codes, and engine parameters.
  • Test the Repairs
    • After fixing or replacing the ECM, it’s essential to test the vehicle to ensure that the problem has been resolved. Clear any DTCs from the system and perform a test drive to verify that the engine is running smoothly and all functions are operating correctly.

Fixing an engine control module requires careful diagnosis and attention to detail. Whether it’s checking wiring, reflashing the ECM, or replacing the unit altogether, addressing ECM issues promptly can save you from further engine problems and ensure your vehicle runs efficiently. If you’re unsure about handling ECM repairs yourself, it’s always best to consult with a professional mechanic. For more information on ECM maintenance and to find high-quality replacement parts, visit our website. Keeping your engine control module in good condition is key to maintaining your vehicle’s performance and reliability.

By precisely managing engine functions such as fuel injection timing and air-fuel ratios, the 3681405 ECM optimizes performance, improves fuel efficiency, and ensures compliance with emissions standards.

To prevent ECM failures, protect the ECM from extreme weather conditions, engine heat, shaking, and moisture. Regular maintenance and inspections can also help identify potential issues before they lead to ECM failure.

Yes, advanced troubleshooting guides are available for Cummins ISM and ISX engines, offering systematic approaches to diagnose and resolve mechanical and electronic issues effectively.

Replacing the ECM requires specialized knowledge and equipment. It is recommended to seek professional assistance to ensure proper installation and programming.

Cummins Engine Control Module (ECM)s